./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5317dae 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/dll-circular-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b2cf85bdf3ceca18f859bba09ed8bf6de8160130db2f8571365ac2bc4f0e30c --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:31:25,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:31:25,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:31:25,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:31:25,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:31:25,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:31:25,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:31:25,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:31:25,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:31:25,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:31:25,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:31:25,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:31:25,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:31:25,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:31:25,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:31:25,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:31:25,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:31:25,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:31:25,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:31:25,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:31:25,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:31:25,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:31:25,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:31:25,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:31:25,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:31:25,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:31:25,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:31:25,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:31:25,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:31:25,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:31:25,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:31:25,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:31:25,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:31:25,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:31:25,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:31:25,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:31:25,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:31:25,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:31:25,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:31:25,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:31:25,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:31:25,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-16 03:31:25,995 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:31:25,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:31:25,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:31:25,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:31:25,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:31:25,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:31:25,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:31:25,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:31:25,998 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:31:25,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:31:25,999 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:31:25,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:31:25,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:31:25,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:31:25,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:31:25,999 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:31:26,000 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:31:26,000 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:31:26,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:31:26,000 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:31:26,000 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:31:26,000 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:31:26,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:31:26,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:31:26,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:31:26,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:31:26,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:31:26,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:31:26,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 03:31:26,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 03:31:26,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:31:26,002 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:31:26,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:31:26,002 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:31:26,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b2cf85bdf3ceca18f859bba09ed8bf6de8160130db2f8571365ac2bc4f0e30c [2023-02-16 03:31:26,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:31:26,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:31:26,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:31:26,192 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:31:26,193 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:31:26,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-circular-2.i [2023-02-16 03:31:27,219 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:31:27,444 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:31:27,444 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-circular-2.i [2023-02-16 03:31:27,451 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c822707e5/b478114a599041dda918117118d7d316/FLAG699868c6e [2023-02-16 03:31:27,460 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c822707e5/b478114a599041dda918117118d7d316 [2023-02-16 03:31:27,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:31:27,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:31:27,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:31:27,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:31:27,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:31:27,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4594d31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27, skipping insertion in model container [2023-02-16 03:31:27,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:31:27,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:31:27,724 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/dll-circular-2.i[22391,22404] [2023-02-16 03:31:27,730 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/dll-circular-2.i[22497,22510] [2023-02-16 03:31:27,734 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/dll-circular-2.i[22622,22635] [2023-02-16 03:31:27,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:31:27,753 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 03:31:27,784 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/dll-circular-2.i[22391,22404] [2023-02-16 03:31:27,788 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/dll-circular-2.i[22497,22510] [2023-02-16 03:31:27,790 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/dll-circular-2.i[22622,22635] [2023-02-16 03:31:27,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:31:27,811 INFO L208 MainTranslator]: Completed translation [2023-02-16 03:31:27,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27 WrapperNode [2023-02-16 03:31:27,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:31:27,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 03:31:27,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 03:31:27,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 03:31:27,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,861 INFO L138 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 123 [2023-02-16 03:31:27,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 03:31:27,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 03:31:27,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 03:31:27,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 03:31:27,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 03:31:27,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 03:31:27,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 03:31:27,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 03:31:27,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (1/1) ... [2023-02-16 03:31:27,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:31:27,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:31:27,954 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) [2023-02-16 03:31:27,989 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 [2023-02-16 03:31:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 03:31:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 03:31:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 03:31:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 03:31:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 03:31:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 03:31:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 03:31:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 03:31:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 03:31:28,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 03:31:28,146 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 03:31:28,161 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 03:31:28,392 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 03:31:28,397 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 03:31:28,397 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2023-02-16 03:31:28,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:31:28 BoogieIcfgContainer [2023-02-16 03:31:28,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 03:31:28,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 03:31:28,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 03:31:28,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 03:31:28,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:31:27" (1/3) ... [2023-02-16 03:31:28,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de3cdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:31:28, skipping insertion in model container [2023-02-16 03:31:28,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:31:27" (2/3) ... [2023-02-16 03:31:28,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de3cdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:31:28, skipping insertion in model container [2023-02-16 03:31:28,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:31:28" (3/3) ... [2023-02-16 03:31:28,405 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2023-02-16 03:31:28,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 03:31:28,418 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2023-02-16 03:31:28,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 03:31:28,471 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;@2b0c55a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 03:31:28,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2023-02-16 03:31:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 111 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-16 03:31:28,496 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:28,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-16 03:31:28,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-16 03:31:28,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:28,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134610260] [2023-02-16 03:31:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:28,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:28,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134610260] [2023-02-16 03:31:28,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134610260] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:28,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:28,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:31:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752601334] [2023-02-16 03:31:28,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:28,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:31:28,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:28,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:31:28,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:31:28,709 INFO L87 Difference]: Start difference. First operand has 112 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 111 states have internal predecessors, (130), 0 states have call successors, (0), 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) [2023-02-16 03:31:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:28,820 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2023-02-16 03:31:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:31:28,822 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 [2023-02-16 03:31:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:28,830 INFO L225 Difference]: With dead ends: 117 [2023-02-16 03:31:28,831 INFO L226 Difference]: Without dead ends: 115 [2023-02-16 03:31:28,832 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 [2023-02-16 03:31:28,836 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 95 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:28,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 80 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:28,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-16 03:31:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2023-02-16 03:31:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 104 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:28,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2023-02-16 03:31:28,876 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 3 [2023-02-16 03:31:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:28,877 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2023-02-16 03:31:28,877 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) [2023-02-16 03:31:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2023-02-16 03:31:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-16 03:31:28,877 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:28,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-16 03:31:28,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 03:31:28,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-16 03:31:28,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:28,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743851790] [2023-02-16 03:31:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:28,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:28,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:28,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743851790] [2023-02-16 03:31:28,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743851790] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:28,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:28,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:31:28,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381909879] [2023-02-16 03:31:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:28,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:31:28,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:31:28,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:31:28,995 INFO L87 Difference]: Start difference. First operand 105 states and 111 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) [2023-02-16 03:31:29,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:29,082 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2023-02-16 03:31:29,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:31:29,083 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 [2023-02-16 03:31:29,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:29,086 INFO L225 Difference]: With dead ends: 112 [2023-02-16 03:31:29,086 INFO L226 Difference]: Without dead ends: 112 [2023-02-16 03:31:29,086 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 [2023-02-16 03:31:29,087 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 92 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:29,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 80 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-16 03:31:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2023-02-16 03:31:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 99 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2023-02-16 03:31:29,103 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 3 [2023-02-16 03:31:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:29,103 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2023-02-16 03:31:29,103 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) [2023-02-16 03:31:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2023-02-16 03:31:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 03:31:29,107 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:29,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:29,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 03:31:29,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112040, now seen corresponding path program 1 times [2023-02-16 03:31:29,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:29,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4944533] [2023-02-16 03:31:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:29,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:29,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:29,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4944533] [2023-02-16 03:31:29,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4944533] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:29,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:29,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:31:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332763503] [2023-02-16 03:31:29,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:29,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:31:29,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:31:29,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:31:29,219 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:29,310 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2023-02-16 03:31:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:31:29,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 03:31:29,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:29,313 INFO L225 Difference]: With dead ends: 97 [2023-02-16 03:31:29,313 INFO L226 Difference]: Without dead ends: 97 [2023-02-16 03:31:29,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:31:29,318 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 150 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:29,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 54 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-16 03:31:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2023-02-16 03:31:29,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.6206896551724137) internal successors, (94), 87 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2023-02-16 03:31:29,331 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 9 [2023-02-16 03:31:29,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:29,331 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2023-02-16 03:31:29,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,332 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2023-02-16 03:31:29,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 03:31:29,332 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:29,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:29,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 03:31:29,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:29,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112041, now seen corresponding path program 1 times [2023-02-16 03:31:29,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:29,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013319146] [2023-02-16 03:31:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:29,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:29,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:29,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013319146] [2023-02-16 03:31:29,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013319146] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:29,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:29,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:31:29,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355653777] [2023-02-16 03:31:29,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:29,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:31:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:29,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:31:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:31:29,426 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:29,526 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2023-02-16 03:31:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:31:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 03:31:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:29,527 INFO L225 Difference]: With dead ends: 113 [2023-02-16 03:31:29,527 INFO L226 Difference]: Without dead ends: 113 [2023-02-16 03:31:29,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:31:29,528 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 103 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:29,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 101 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-02-16 03:31:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2023-02-16 03:31:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 96 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2023-02-16 03:31:29,532 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 9 [2023-02-16 03:31:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:29,532 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2023-02-16 03:31:29,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2023-02-16 03:31:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 03:31:29,533 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:29,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:29,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 03:31:29,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2023-02-16 03:31:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:29,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227063775] [2023-02-16 03:31:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:29,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:29,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227063775] [2023-02-16 03:31:29,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227063775] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:29,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:29,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:31:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270858855] [2023-02-16 03:31:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:29,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:31:29,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:31:29,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:31:29,722 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:29,832 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2023-02-16 03:31:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:31:29,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-16 03:31:29,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:29,834 INFO L225 Difference]: With dead ends: 96 [2023-02-16 03:31:29,836 INFO L226 Difference]: Without dead ends: 96 [2023-02-16 03:31:29,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:31:29,837 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 7 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:29,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 224 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:29,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-02-16 03:31:29,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-02-16 03:31:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2023-02-16 03:31:29,841 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 12 [2023-02-16 03:31:29,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:29,842 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2023-02-16 03:31:29,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:29,842 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2023-02-16 03:31:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 03:31:29,842 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:29,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:29,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 03:31:29,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2023-02-16 03:31:29,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:29,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993405819] [2023-02-16 03:31:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:29,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:29,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:29,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993405819] [2023-02-16 03:31:29,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993405819] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:29,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:29,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:31:29,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125376558] [2023-02-16 03:31:29,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:29,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:31:29,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:29,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:31:29,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:31:29,931 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:30,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:30,021 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2023-02-16 03:31:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:31:30,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-16 03:31:30,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:30,022 INFO L225 Difference]: With dead ends: 95 [2023-02-16 03:31:30,022 INFO L226 Difference]: Without dead ends: 95 [2023-02-16 03:31:30,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:31:30,022 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 8 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:30,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 229 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-16 03:31:30,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-02-16 03:31:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 94 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2023-02-16 03:31:30,025 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 12 [2023-02-16 03:31:30,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:30,025 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2023-02-16 03:31:30,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2023-02-16 03:31:30,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 03:31:30,026 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:30,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:30,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-16 03:31:30,027 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:30,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:30,027 INFO L85 PathProgramCache]: Analyzing trace with hash 683852107, now seen corresponding path program 1 times [2023-02-16 03:31:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:30,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645794426] [2023-02-16 03:31:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:30,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645794426] [2023-02-16 03:31:30,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645794426] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:30,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:30,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 03:31:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634817117] [2023-02-16 03:31:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:31:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:31:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:31:30,195 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:30,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:30,341 INFO L93 Difference]: Finished difference Result 178 states and 189 transitions. [2023-02-16 03:31:30,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:31:30,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-02-16 03:31:30,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:30,343 INFO L225 Difference]: With dead ends: 178 [2023-02-16 03:31:30,343 INFO L226 Difference]: Without dead ends: 178 [2023-02-16 03:31:30,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-02-16 03:31:30,344 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 278 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:30,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 284 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-16 03:31:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 98. [2023-02-16 03:31:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5) internal successors, (105), 97 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2023-02-16 03:31:30,346 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 13 [2023-02-16 03:31:30,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:30,346 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2023-02-16 03:31:30,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2023-02-16 03:31:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 03:31:30,347 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:30,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:30,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 03:31:30,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:30,348 INFO L85 PathProgramCache]: Analyzing trace with hash -275416990, now seen corresponding path program 1 times [2023-02-16 03:31:30,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:30,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099874156] [2023-02-16 03:31:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:30,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:30,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:30,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099874156] [2023-02-16 03:31:30,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099874156] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:30,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:30,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:31:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479527806] [2023-02-16 03:31:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:30,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:31:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:31:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:31:30,481 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:30,685 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2023-02-16 03:31:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:31:30,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-02-16 03:31:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:30,687 INFO L225 Difference]: With dead ends: 140 [2023-02-16 03:31:30,687 INFO L226 Difference]: Without dead ends: 140 [2023-02-16 03:31:30,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:31:30,687 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 329 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:30,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 210 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-02-16 03:31:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 100. [2023-02-16 03:31:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.5) internal successors, (108), 99 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2023-02-16 03:31:30,690 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 14 [2023-02-16 03:31:30,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:30,690 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2023-02-16 03:31:30,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:30,690 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2023-02-16 03:31:30,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 03:31:30,691 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:30,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:30,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 03:31:30,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:30,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash -275416989, now seen corresponding path program 1 times [2023-02-16 03:31:30,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:30,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578801031] [2023-02-16 03:31:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:30,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:30,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578801031] [2023-02-16 03:31:30,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578801031] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:30,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:30,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:31:30,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828886331] [2023-02-16 03:31:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:30,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:31:30,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:31:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:31:30,934 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:31,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:31,161 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2023-02-16 03:31:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:31:31,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-02-16 03:31:31,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:31,163 INFO L225 Difference]: With dead ends: 172 [2023-02-16 03:31:31,163 INFO L226 Difference]: Without dead ends: 172 [2023-02-16 03:31:31,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-02-16 03:31:31,164 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 255 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:31,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 216 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:31,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-02-16 03:31:31,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 112. [2023-02-16 03:31:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.5) internal successors, (126), 111 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2023-02-16 03:31:31,167 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 14 [2023-02-16 03:31:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:31,167 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2023-02-16 03:31:31,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2023-02-16 03:31:31,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 03:31:31,168 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:31,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:31,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-16 03:31:31,168 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2023-02-16 03:31:31,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:31,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003285744] [2023-02-16 03:31:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:31,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003285744] [2023-02-16 03:31:31,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003285744] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:31,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:31,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 03:31:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065213490] [2023-02-16 03:31:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:31,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 03:31:31,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 03:31:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:31:31,323 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:31,564 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2023-02-16 03:31:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 03:31:31,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-02-16 03:31:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:31,565 INFO L225 Difference]: With dead ends: 120 [2023-02-16 03:31:31,565 INFO L226 Difference]: Without dead ends: 120 [2023-02-16 03:31:31,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-16 03:31:31,565 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 172 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:31,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 210 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:31:31,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-16 03:31:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2023-02-16 03:31:31,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 110 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2023-02-16 03:31:31,567 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 16 [2023-02-16 03:31:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:31,567 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2023-02-16 03:31:31,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2023-02-16 03:31:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 03:31:31,568 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:31,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:31,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-16 03:31:31,568 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:31,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2023-02-16 03:31:31,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:31,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030267959] [2023-02-16 03:31:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:31,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:31,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:31,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030267959] [2023-02-16 03:31:31,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030267959] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:31,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:31,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 03:31:31,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508031971] [2023-02-16 03:31:31,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:31,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:31:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:31,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:31:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:31:31,847 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:32,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:32,271 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2023-02-16 03:31:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:31:32,272 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-02-16 03:31:32,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:32,272 INFO L225 Difference]: With dead ends: 115 [2023-02-16 03:31:32,272 INFO L226 Difference]: Without dead ends: 115 [2023-02-16 03:31:32,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-02-16 03:31:32,273 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 162 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:32,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 240 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:31:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-16 03:31:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2023-02-16 03:31:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 98 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2023-02-16 03:31:32,275 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 16 [2023-02-16 03:31:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:32,275 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2023-02-16 03:31:32,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2023-02-16 03:31:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 03:31:32,275 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:32,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:32,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-16 03:31:32,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1559926215, now seen corresponding path program 1 times [2023-02-16 03:31:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:32,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110590433] [2023-02-16 03:31:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:32,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:32,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110590433] [2023-02-16 03:31:32,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110590433] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:32,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:32,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 03:31:32,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419011700] [2023-02-16 03:31:32,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:32,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 03:31:32,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:32,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 03:31:32,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:31:32,534 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 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) [2023-02-16 03:31:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:32,771 INFO L93 Difference]: Finished difference Result 147 states and 158 transitions. [2023-02-16 03:31:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 03:31:32,772 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 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 [2023-02-16 03:31:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:32,772 INFO L225 Difference]: With dead ends: 147 [2023-02-16 03:31:32,772 INFO L226 Difference]: Without dead ends: 147 [2023-02-16 03:31:32,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-02-16 03:31:32,773 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 270 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:32,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 322 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-02-16 03:31:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 99. [2023-02-16 03:31:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.435897435897436) internal successors, (112), 98 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2023-02-16 03:31:32,774 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 17 [2023-02-16 03:31:32,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:32,775 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2023-02-16 03:31:32,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 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) [2023-02-16 03:31:32,775 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2023-02-16 03:31:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 03:31:32,775 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:32,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:32,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-16 03:31:32,775 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:32,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1559926214, now seen corresponding path program 1 times [2023-02-16 03:31:32,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:32,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476292898] [2023-02-16 03:31:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:32,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:33,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:33,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476292898] [2023-02-16 03:31:33,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476292898] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:33,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:33,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:31:33,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414563786] [2023-02-16 03:31:33,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:33,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:31:33,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:33,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:31:33,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:31:33,057 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2023-02-16 03:31:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:33,262 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2023-02-16 03:31:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 03:31:33,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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 [2023-02-16 03:31:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:33,263 INFO L225 Difference]: With dead ends: 157 [2023-02-16 03:31:33,263 INFO L226 Difference]: Without dead ends: 157 [2023-02-16 03:31:33,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:31:33,264 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 246 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:33,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 245 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-02-16 03:31:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 99. [2023-02-16 03:31:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 98 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2023-02-16 03:31:33,266 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 17 [2023-02-16 03:31:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:33,266 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2023-02-16 03:31:33,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2023-02-16 03:31:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2023-02-16 03:31:33,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 03:31:33,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:33,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:33,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-16 03:31:33,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:33,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:33,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1113087206, now seen corresponding path program 1 times [2023-02-16 03:31:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:33,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575366506] [2023-02-16 03:31:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:33,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:33,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:33,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575366506] [2023-02-16 03:31:33,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575366506] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:33,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:33,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:31:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19257927] [2023-02-16 03:31:33,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:33,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:31:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:31:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:31:33,399 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:33,562 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2023-02-16 03:31:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:31:33,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-16 03:31:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:33,563 INFO L225 Difference]: With dead ends: 138 [2023-02-16 03:31:33,563 INFO L226 Difference]: Without dead ends: 138 [2023-02-16 03:31:33,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:31:33,564 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 302 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:33,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 207 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-16 03:31:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 116. [2023-02-16 03:31:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 115 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2023-02-16 03:31:33,567 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 18 [2023-02-16 03:31:33,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:33,567 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2023-02-16 03:31:33,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2023-02-16 03:31:33,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 03:31:33,568 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:33,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:33,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-16 03:31:33,568 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1113087205, now seen corresponding path program 1 times [2023-02-16 03:31:33,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:33,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370859037] [2023-02-16 03:31:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:33,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:33,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370859037] [2023-02-16 03:31:33,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370859037] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:33,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:33,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:31:33,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819055572] [2023-02-16 03:31:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:33,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:31:33,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:31:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:31:33,775 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:33,949 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2023-02-16 03:31:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:31:33,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-16 03:31:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:33,950 INFO L225 Difference]: With dead ends: 159 [2023-02-16 03:31:33,950 INFO L226 Difference]: Without dead ends: 159 [2023-02-16 03:31:33,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-02-16 03:31:33,951 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 226 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:33,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 184 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-16 03:31:33,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 121. [2023-02-16 03:31:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 100 states have (on average 1.47) internal successors, (147), 120 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 147 transitions. [2023-02-16 03:31:33,955 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 147 transitions. Word has length 18 [2023-02-16 03:31:33,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:33,955 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 147 transitions. [2023-02-16 03:31:33,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 147 transitions. [2023-02-16 03:31:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 03:31:33,957 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:33,957 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] [2023-02-16 03:31:33,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-16 03:31:33,957 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1461687964, now seen corresponding path program 1 times [2023-02-16 03:31:33,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:33,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115733701] [2023-02-16 03:31:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:34,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:34,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115733701] [2023-02-16 03:31:34,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115733701] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:34,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:34,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:31:34,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082178609] [2023-02-16 03:31:34,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:34,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:31:34,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:31:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:31:34,105 INFO L87 Difference]: Start difference. First operand 121 states and 147 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:34,235 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2023-02-16 03:31:34,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 03:31:34,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-16 03:31:34,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:34,236 INFO L225 Difference]: With dead ends: 155 [2023-02-16 03:31:34,236 INFO L226 Difference]: Without dead ends: 155 [2023-02-16 03:31:34,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-02-16 03:31:34,237 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 171 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:34,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 258 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-16 03:31:34,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 122. [2023-02-16 03:31:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 101 states have (on average 1.4653465346534653) internal successors, (148), 121 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2023-02-16 03:31:34,239 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 21 [2023-02-16 03:31:34,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:34,239 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2023-02-16 03:31:34,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2023-02-16 03:31:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 03:31:34,239 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:34,239 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] [2023-02-16 03:31:34,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-16 03:31:34,240 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:34,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1905376220, now seen corresponding path program 1 times [2023-02-16 03:31:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:34,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42846997] [2023-02-16 03:31:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:34,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:34,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:34,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42846997] [2023-02-16 03:31:34,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42846997] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:34,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:34,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:31:34,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625035677] [2023-02-16 03:31:34,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:34,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:31:34,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:34,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:31:34,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:31:34,259 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:34,264 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2023-02-16 03:31:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:31:34,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-16 03:31:34,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:34,265 INFO L225 Difference]: With dead ends: 125 [2023-02-16 03:31:34,265 INFO L226 Difference]: Without dead ends: 125 [2023-02-16 03:31:34,266 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 [2023-02-16 03:31:34,266 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:34,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:31:34,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-16 03:31:34,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-02-16 03:31:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 104 states have (on average 1.4519230769230769) internal successors, (151), 124 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2023-02-16 03:31:34,269 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 21 [2023-02-16 03:31:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:34,269 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2023-02-16 03:31:34,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2023-02-16 03:31:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 03:31:34,269 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:34,270 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] [2023-02-16 03:31:34,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-16 03:31:34,270 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2137291894, now seen corresponding path program 1 times [2023-02-16 03:31:34,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:34,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654395542] [2023-02-16 03:31:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:34,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:34,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:34,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654395542] [2023-02-16 03:31:34,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654395542] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:34,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:34,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-16 03:31:34,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017474346] [2023-02-16 03:31:34,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:34,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:31:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:34,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:31:34,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:31:34,402 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:34,704 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2023-02-16 03:31:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:31:34,705 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-16 03:31:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:34,706 INFO L225 Difference]: With dead ends: 161 [2023-02-16 03:31:34,706 INFO L226 Difference]: Without dead ends: 161 [2023-02-16 03:31:34,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-02-16 03:31:34,707 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 132 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:34,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 356 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:31:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-02-16 03:31:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2023-02-16 03:31:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 118 states have (on average 1.423728813559322) internal successors, (168), 138 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 168 transitions. [2023-02-16 03:31:34,710 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 168 transitions. Word has length 21 [2023-02-16 03:31:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:34,710 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 168 transitions. [2023-02-16 03:31:34,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 168 transitions. [2023-02-16 03:31:34,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 03:31:34,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:34,712 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] [2023-02-16 03:31:34,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-16 03:31:34,712 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:34,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1062832435, now seen corresponding path program 1 times [2023-02-16 03:31:34,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:34,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012777565] [2023-02-16 03:31:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:34,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:34,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:34,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012777565] [2023-02-16 03:31:34,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012777565] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:34,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:34,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:31:34,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192559727] [2023-02-16 03:31:34,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:34,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:31:34,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:31:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:31:34,764 INFO L87 Difference]: Start difference. First operand 139 states and 168 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:34,821 INFO L93 Difference]: Finished difference Result 138 states and 165 transitions. [2023-02-16 03:31:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:31:34,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-16 03:31:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:34,821 INFO L225 Difference]: With dead ends: 138 [2023-02-16 03:31:34,821 INFO L226 Difference]: Without dead ends: 138 [2023-02-16 03:31:34,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:31:34,822 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 29 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:34,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 170 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:31:34,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-16 03:31:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-02-16 03:31:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 118 states have (on average 1.3983050847457628) internal successors, (165), 137 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 165 transitions. [2023-02-16 03:31:34,824 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 165 transitions. Word has length 22 [2023-02-16 03:31:34,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:34,837 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 165 transitions. [2023-02-16 03:31:34,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 165 transitions. [2023-02-16 03:31:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 03:31:34,837 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:34,837 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] [2023-02-16 03:31:34,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-16 03:31:34,837 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1062832434, now seen corresponding path program 1 times [2023-02-16 03:31:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:34,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238617812] [2023-02-16 03:31:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:34,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:35,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238617812] [2023-02-16 03:31:35,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238617812] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:35,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:35,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 03:31:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755330786] [2023-02-16 03:31:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:35,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:31:35,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:31:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:31:35,124 INFO L87 Difference]: Start difference. First operand 138 states and 165 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:35,374 INFO L93 Difference]: Finished difference Result 157 states and 171 transitions. [2023-02-16 03:31:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 03:31:35,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-16 03:31:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:35,375 INFO L225 Difference]: With dead ends: 157 [2023-02-16 03:31:35,375 INFO L226 Difference]: Without dead ends: 157 [2023-02-16 03:31:35,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-02-16 03:31:35,376 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 180 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:35,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 340 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-02-16 03:31:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 138. [2023-02-16 03:31:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 118 states have (on average 1.3898305084745763) internal successors, (164), 137 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2023-02-16 03:31:35,378 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 22 [2023-02-16 03:31:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:35,378 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2023-02-16 03:31:35,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2023-02-16 03:31:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 03:31:35,378 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:35,378 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] [2023-02-16 03:31:35,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-16 03:31:35,378 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:35,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:35,379 INFO L85 PathProgramCache]: Analyzing trace with hash 227835007, now seen corresponding path program 1 times [2023-02-16 03:31:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:35,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513220944] [2023-02-16 03:31:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:35,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:35,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:35,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513220944] [2023-02-16 03:31:35,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513220944] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:35,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:35,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 03:31:35,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709260651] [2023-02-16 03:31:35,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:35,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 03:31:35,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:35,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 03:31:35,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:31:35,596 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2023-02-16 03:31:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:35,798 INFO L93 Difference]: Finished difference Result 151 states and 166 transitions. [2023-02-16 03:31:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 03:31:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 [2023-02-16 03:31:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:35,799 INFO L225 Difference]: With dead ends: 151 [2023-02-16 03:31:35,799 INFO L226 Difference]: Without dead ends: 147 [2023-02-16 03:31:35,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:31:35,800 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 43 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:35,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 367 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-02-16 03:31:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 136. [2023-02-16 03:31:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 116 states have (on average 1.3879310344827587) internal successors, (161), 135 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2023-02-16 03:31:35,802 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 23 [2023-02-16 03:31:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:35,802 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2023-02-16 03:31:35,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2023-02-16 03:31:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2023-02-16 03:31:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 03:31:35,802 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:35,802 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] [2023-02-16 03:31:35,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-16 03:31:35,803 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash 229252065, now seen corresponding path program 1 times [2023-02-16 03:31:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:35,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840987470] [2023-02-16 03:31:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:35,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:35,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:35,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840987470] [2023-02-16 03:31:35,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840987470] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:35,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:35,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 03:31:35,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192648267] [2023-02-16 03:31:35,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:35,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 03:31:35,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:35,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 03:31:35,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:31:35,968 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2023-02-16 03:31:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:36,114 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2023-02-16 03:31:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:31:36,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 [2023-02-16 03:31:36,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:36,115 INFO L225 Difference]: With dead ends: 160 [2023-02-16 03:31:36,115 INFO L226 Difference]: Without dead ends: 160 [2023-02-16 03:31:36,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-02-16 03:31:36,116 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 219 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:36,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 304 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-02-16 03:31:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2023-02-16 03:31:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 117 states have (on average 1.3846153846153846) internal successors, (162), 136 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 162 transitions. [2023-02-16 03:31:36,118 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 162 transitions. Word has length 23 [2023-02-16 03:31:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:36,118 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 162 transitions. [2023-02-16 03:31:36,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2023-02-16 03:31:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 162 transitions. [2023-02-16 03:31:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 03:31:36,118 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:36,119 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] [2023-02-16 03:31:36,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-16 03:31:36,119 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:36,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash 779247630, now seen corresponding path program 1 times [2023-02-16 03:31:36,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:36,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503840018] [2023-02-16 03:31:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:36,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:36,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:36,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503840018] [2023-02-16 03:31:36,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503840018] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:36,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:36,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:31:36,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644014235] [2023-02-16 03:31:36,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:36,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:31:36,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:31:36,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:31:36,159 INFO L87 Difference]: Start difference. First operand 137 states and 162 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:36,265 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2023-02-16 03:31:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:31:36,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-16 03:31:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:36,266 INFO L225 Difference]: With dead ends: 139 [2023-02-16 03:31:36,266 INFO L226 Difference]: Without dead ends: 139 [2023-02-16 03:31:36,267 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 [2023-02-16 03:31:36,267 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 78 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:36,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 163 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-02-16 03:31:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2023-02-16 03:31:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 118 states have (on average 1.38135593220339) internal successors, (163), 137 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2023-02-16 03:31:36,269 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 24 [2023-02-16 03:31:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:36,269 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2023-02-16 03:31:36,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2023-02-16 03:31:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 03:31:36,270 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:36,270 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] [2023-02-16 03:31:36,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-16 03:31:36,270 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 779247631, now seen corresponding path program 1 times [2023-02-16 03:31:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:36,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953937930] [2023-02-16 03:31:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:36,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953937930] [2023-02-16 03:31:36,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953937930] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:31:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192975187] [2023-02-16 03:31:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:36,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:31:36,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:31:36,560 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) [2023-02-16 03:31:36,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 03:31:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:36,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 03:31:36,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:31:36,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 15 [2023-02-16 03:31:36,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 16 [2023-02-16 03:31:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:36,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:31:36,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192975187] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:36,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:31:36,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-02-16 03:31:36,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918738701] [2023-02-16 03:31:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:36,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:31:36,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:31:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-02-16 03:31:36,841 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:36,989 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2023-02-16 03:31:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:31:36,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-16 03:31:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:36,990 INFO L225 Difference]: With dead ends: 138 [2023-02-16 03:31:36,990 INFO L226 Difference]: Without dead ends: 138 [2023-02-16 03:31:36,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-02-16 03:31:36,990 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 63 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:36,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 177 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-16 03:31:36,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2023-02-16 03:31:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.347457627118644) internal successors, (159), 136 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2023-02-16 03:31:36,992 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 24 [2023-02-16 03:31:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:36,992 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2023-02-16 03:31:36,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:36,993 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2023-02-16 03:31:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 03:31:36,993 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:36,993 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] [2023-02-16 03:31:37,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 03:31:37,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-02-16 03:31:37,200 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1267909458, now seen corresponding path program 1 times [2023-02-16 03:31:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:37,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551591077] [2023-02-16 03:31:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:37,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:37,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551591077] [2023-02-16 03:31:37,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551591077] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:37,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:37,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-02-16 03:31:37,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154740272] [2023-02-16 03:31:37,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:37,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 03:31:37,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:37,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 03:31:37,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-16 03:31:37,496 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 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) [2023-02-16 03:31:37,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:37,734 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2023-02-16 03:31:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 03:31:37,735 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 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 [2023-02-16 03:31:37,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:37,735 INFO L225 Difference]: With dead ends: 152 [2023-02-16 03:31:37,735 INFO L226 Difference]: Without dead ends: 148 [2023-02-16 03:31:37,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-02-16 03:31:37,736 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 126 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:37,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 426 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-02-16 03:31:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 137. [2023-02-16 03:31:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.3389830508474576) internal successors, (158), 136 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) [2023-02-16 03:31:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2023-02-16 03:31:37,738 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 25 [2023-02-16 03:31:37,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:37,738 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2023-02-16 03:31:37,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 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) [2023-02-16 03:31:37,738 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2023-02-16 03:31:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 03:31:37,738 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:37,738 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] [2023-02-16 03:31:37,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-16 03:31:37,739 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash -342052636, now seen corresponding path program 1 times [2023-02-16 03:31:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:37,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741217601] [2023-02-16 03:31:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:37,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:38,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:38,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741217601] [2023-02-16 03:31:38,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741217601] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:38,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:38,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-16 03:31:38,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772506121] [2023-02-16 03:31:38,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:38,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 03:31:38,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:38,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 03:31:38,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:31:38,060 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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) [2023-02-16 03:31:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:38,333 INFO L93 Difference]: Finished difference Result 146 states and 159 transitions. [2023-02-16 03:31:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:31:38,333 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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 [2023-02-16 03:31:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:38,334 INFO L225 Difference]: With dead ends: 146 [2023-02-16 03:31:38,334 INFO L226 Difference]: Without dead ends: 146 [2023-02-16 03:31:38,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-02-16 03:31:38,334 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 183 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:38,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 459 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-02-16 03:31:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2023-02-16 03:31:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 117 states have (on average 1.3333333333333333) internal successors, (156), 135 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) [2023-02-16 03:31:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 156 transitions. [2023-02-16 03:31:38,336 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 156 transitions. Word has length 25 [2023-02-16 03:31:38,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:38,336 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 156 transitions. [2023-02-16 03:31:38,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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) [2023-02-16 03:31:38,337 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 156 transitions. [2023-02-16 03:31:38,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 03:31:38,337 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:38,337 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] [2023-02-16 03:31:38,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-16 03:31:38,337 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:38,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1700492295, now seen corresponding path program 1 times [2023-02-16 03:31:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:38,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137159405] [2023-02-16 03:31:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:38,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:38,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137159405] [2023-02-16 03:31:38,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137159405] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:38,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:31:38,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:31:38,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789429145] [2023-02-16 03:31:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:38,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:31:38,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:31:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:31:38,361 INFO L87 Difference]: Start difference. First operand 136 states and 156 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2023-02-16 03:31:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:38,369 INFO L93 Difference]: Finished difference Result 209 states and 231 transitions. [2023-02-16 03:31:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:31:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 [2023-02-16 03:31:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:38,371 INFO L225 Difference]: With dead ends: 209 [2023-02-16 03:31:38,371 INFO L226 Difference]: Without dead ends: 209 [2023-02-16 03:31:38,371 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 [2023-02-16 03:31:38,372 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:38,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:31:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-02-16 03:31:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 153. [2023-02-16 03:31:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 134 states have (on average 1.2985074626865671) internal successors, (174), 152 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2023-02-16 03:31:38,375 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 25 [2023-02-16 03:31:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:38,375 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2023-02-16 03:31:38,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2023-02-16 03:31:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2023-02-16 03:31:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 03:31:38,375 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:38,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:31:38,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-16 03:31:38,376 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1532665747, now seen corresponding path program 1 times [2023-02-16 03:31:38,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:38,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220115535] [2023-02-16 03:31:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:38,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:38,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220115535] [2023-02-16 03:31:38,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220115535] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:31:38,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508584359] [2023-02-16 03:31:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:38,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:31:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:31:38,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:31:38,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 03:31:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:38,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 03:31:38,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:31:38,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 17 [2023-02-16 03:31:38,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 13 [2023-02-16 03:31:38,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-02-16 03:31:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:38,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:31:38,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508584359] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:31:38,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:31:38,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-02-16 03:31:38,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839397872] [2023-02-16 03:31:38,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:31:38,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 03:31:38,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 03:31:38,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2023-02-16 03:31:38,824 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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) [2023-02-16 03:31:39,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:39,017 INFO L93 Difference]: Finished difference Result 171 states and 193 transitions. [2023-02-16 03:31:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:31:39,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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 [2023-02-16 03:31:39,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:39,018 INFO L225 Difference]: With dead ends: 171 [2023-02-16 03:31:39,018 INFO L226 Difference]: Without dead ends: 171 [2023-02-16 03:31:39,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-02-16 03:31:39,019 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 33 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:39,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 330 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:31:39,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-02-16 03:31:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 166. [2023-02-16 03:31:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 147 states have (on average 1.2857142857142858) internal successors, (189), 165 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 189 transitions. [2023-02-16 03:31:39,021 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 189 transitions. Word has length 26 [2023-02-16 03:31:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:39,022 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 189 transitions. [2023-02-16 03:31:39,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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) [2023-02-16 03:31:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 189 transitions. [2023-02-16 03:31:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 03:31:39,022 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:39,022 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-02-16 03:31:39,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 03:31:39,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-02-16 03:31:39,227 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:39,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:39,227 INFO L85 PathProgramCache]: Analyzing trace with hash -301886117, now seen corresponding path program 1 times [2023-02-16 03:31:39,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:39,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78961937] [2023-02-16 03:31:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:39,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:39,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:39,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78961937] [2023-02-16 03:31:39,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78961937] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:31:39,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027866864] [2023-02-16 03:31:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:39,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:31:39,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:31:39,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:31:39,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 03:31:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:39,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-16 03:31:39,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:31:39,635 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 [2023-02-16 03:31:39,688 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:31:39,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-16 03:31:39,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2023-02-16 03:31:39,791 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:31:39,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-02-16 03:31:39,852 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:31:39,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2023-02-16 03:31:39,877 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:31:39,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2023-02-16 03:31:39,911 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:31:39,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-02-16 03:31:39,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2023-02-16 03:31:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:39,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:31:40,068 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_890 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (not (= 0 (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_890))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_893)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2023-02-16 03:31:40,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:40,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2023-02-16 03:31:40,122 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:40,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 245 treesize of output 220 [2023-02-16 03:31:40,128 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:40,129 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 204 treesize of output 197 [2023-02-16 03:31:40,132 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 188 treesize of output 180 [2023-02-16 03:31:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:40,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027866864] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:31:40,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:31:40,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 27 [2023-02-16 03:31:40,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032046258] [2023-02-16 03:31:40,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:31:40,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-16 03:31:40,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:40,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-16 03:31:40,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=532, Unknown=25, NotChecked=48, Total=702 [2023-02-16 03:31:40,298 INFO L87 Difference]: Start difference. First operand 166 states and 189 transitions. Second operand has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:41,011 INFO L93 Difference]: Finished difference Result 273 states and 305 transitions. [2023-02-16 03:31:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:31:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 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 28 [2023-02-16 03:31:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:41,013 INFO L225 Difference]: With dead ends: 273 [2023-02-16 03:31:41,013 INFO L226 Difference]: Without dead ends: 273 [2023-02-16 03:31:41,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=1116, Unknown=26, NotChecked=72, Total=1482 [2023-02-16 03:31:41,016 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 315 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:41,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 626 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 719 Invalid, 2 Unknown, 152 Unchecked, 0.5s Time] [2023-02-16 03:31:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-02-16 03:31:41,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 176. [2023-02-16 03:31:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 157 states have (on average 1.2802547770700636) internal successors, (201), 175 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 201 transitions. [2023-02-16 03:31:41,019 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 201 transitions. Word has length 28 [2023-02-16 03:31:41,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:41,020 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 201 transitions. [2023-02-16 03:31:41,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:41,020 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 201 transitions. [2023-02-16 03:31:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 03:31:41,020 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:41,020 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-02-16 03:31:41,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-16 03:31:41,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-02-16 03:31:41,226 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash -768530862, now seen corresponding path program 1 times [2023-02-16 03:31:41,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:41,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972731248] [2023-02-16 03:31:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:41,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:41,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:41,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972731248] [2023-02-16 03:31:41,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972731248] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:31:41,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873162471] [2023-02-16 03:31:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:41,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:31:41,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:31:41,492 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:31:41,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 03:31:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:41,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-16 03:31:41,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:31:41,774 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 03:31:41,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-02-16 03:31:41,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:31:41,829 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:31:41,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2023-02-16 03:31:41,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:31:41,882 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:31:41,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2023-02-16 03:31:41,921 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:31:41,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2023-02-16 03:31:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:41,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:31:42,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:42,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 252 treesize of output 195 [2023-02-16 03:31:44,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:44,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 54 treesize of output 208 [2023-02-16 03:31:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:44,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873162471] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:31:44,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:31:44,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2023-02-16 03:31:44,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224505195] [2023-02-16 03:31:44,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:31:44,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 03:31:44,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:44,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 03:31:44,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-02-16 03:31:44,628 INFO L87 Difference]: Start difference. First operand 176 states and 201 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:49,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-16 03:31:51,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-16 03:31:53,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-16 03:31:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:31:55,536 INFO L93 Difference]: Finished difference Result 312 states and 353 transitions. [2023-02-16 03:31:55,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-16 03:31:55,536 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 [2023-02-16 03:31:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:31:55,537 INFO L225 Difference]: With dead ends: 312 [2023-02-16 03:31:55,537 INFO L226 Difference]: Without dead ends: 312 [2023-02-16 03:31:55,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=636, Invalid=1914, Unknown=0, NotChecked=0, Total=2550 [2023-02-16 03:31:55,538 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 851 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 77 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:31:55,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 601 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 921 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2023-02-16 03:31:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-02-16 03:31:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 215. [2023-02-16 03:31:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 196 states have (on average 1.2755102040816326) internal successors, (250), 214 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 250 transitions. [2023-02-16 03:31:55,541 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 250 transitions. Word has length 29 [2023-02-16 03:31:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:31:55,541 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 250 transitions. [2023-02-16 03:31:55,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:55,542 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 250 transitions. [2023-02-16 03:31:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 03:31:55,542 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:31:55,542 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-02-16 03:31:55,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 03:31:55,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:31:55,747 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:31:55,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:31:55,748 INFO L85 PathProgramCache]: Analyzing trace with hash -768530861, now seen corresponding path program 1 times [2023-02-16 03:31:55,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:31:55,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776551828] [2023-02-16 03:31:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:55,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:31:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:56,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:31:56,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776551828] [2023-02-16 03:31:56,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776551828] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:31:56,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691895968] [2023-02-16 03:31:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:31:56,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:31:56,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:31:56,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:31:56,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 03:31:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:31:56,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-16 03:31:56,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:31:56,292 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 [2023-02-16 03:31:56,342 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:31:56,343 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 11 [2023-02-16 03:31:56,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-02-16 03:31:56,380 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 [2023-02-16 03:31:56,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-16 03:31:56,458 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:31:56,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2023-02-16 03:31:56,462 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 18 treesize of output 20 [2023-02-16 03:31:56,534 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:31:56,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 03:31:56,538 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 5 treesize of output 3 [2023-02-16 03:31:56,548 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:31:56,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-16 03:31:56,589 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:31:56,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-16 03:31:56,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:31:56,598 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 [2023-02-16 03:31:56,636 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:31:56,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2023-02-16 03:31:56,642 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 18 treesize of output 20 [2023-02-16 03:31:56,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 13 [2023-02-16 03:31:56,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2023-02-16 03:31:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:31:56,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:31:56,781 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1122 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_1121 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8)))) is different from false [2023-02-16 03:31:56,815 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1122 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_1121 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8)))) is different from false [2023-02-16 03:31:56,884 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1116 (Array Int Int)) (v_ArrVal_1115 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1115) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1116) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8))) (forall ((v_ArrVal_1116 (Array Int Int)) (v_ArrVal_1115 (Array Int Int)) (v_ArrVal_1122 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1116))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1115) .cse0 v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 12) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) is different from false [2023-02-16 03:31:56,893 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_1116 (Array Int Int)) (v_ArrVal_1115 (Array Int Int)) (v_ArrVal_1122 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1116))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1115) .cse1 v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 12) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_1116 (Array Int Int)) (v_ArrVal_1115 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1115) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1116) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8))))) is different from false [2023-02-16 03:31:56,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:56,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2023-02-16 03:31:56,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:56,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-02-16 03:31:56,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 54 treesize of output 46 [2023-02-16 03:31:56,918 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:56,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 112 treesize of output 111 [2023-02-16 03:31:56,921 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 68 treesize of output 60 [2023-02-16 03:31:56,924 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 88 treesize of output 82 [2023-02-16 03:31:56,926 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 56 treesize of output 54 [2023-02-16 03:31:56,975 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:56,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2023-02-16 03:31:56,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:31:56,982 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2023-02-16 03:31:56,984 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:31:56,985 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:31:56,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2023-02-16 03:31:56,989 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:31:56,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-02-16 03:31:56,997 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-16 03:31:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-16 03:31:57,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691895968] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:31:57,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:31:57,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-02-16 03:31:57,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102180454] [2023-02-16 03:31:57,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:31:57,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-16 03:31:57,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:31:57,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-16 03:31:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=702, Unknown=19, NotChecked=228, Total=1056 [2023-02-16 03:31:57,105 INFO L87 Difference]: Start difference. First operand 215 states and 250 transitions. Second operand has 33 states, 32 states have (on average 2.65625) internal successors, (85), 33 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:31:59,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-16 03:32:01,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-16 03:32:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:32:06,419 INFO L93 Difference]: Finished difference Result 294 states and 335 transitions. [2023-02-16 03:32:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-16 03:32:06,420 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.65625) internal successors, (85), 33 states have internal predecessors, (85), 0 states have call successors, (0), 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 [2023-02-16 03:32:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:32:06,421 INFO L225 Difference]: With dead ends: 294 [2023-02-16 03:32:06,421 INFO L226 Difference]: Without dead ends: 294 [2023-02-16 03:32:06,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 4 IntricatePredicates, 3 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=445, Invalid=2202, Unknown=21, NotChecked=412, Total=3080 [2023-02-16 03:32:06,422 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 510 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 38 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 620 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:32:06,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 660 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1094 Invalid, 15 Unknown, 620 Unchecked, 6.4s Time] [2023-02-16 03:32:06,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-02-16 03:32:06,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 232. [2023-02-16 03:32:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 213 states have (on average 1.2816901408450705) internal successors, (273), 231 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:32:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 273 transitions. [2023-02-16 03:32:06,425 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 273 transitions. Word has length 29 [2023-02-16 03:32:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:32:06,425 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 273 transitions. [2023-02-16 03:32:06,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.65625) internal successors, (85), 33 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:32:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 273 transitions. [2023-02-16 03:32:06,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 03:32:06,425 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:32:06,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-02-16 03:32:06,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 03:32:06,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:32:06,628 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:32:06,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:32:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1199075445, now seen corresponding path program 1 times [2023-02-16 03:32:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:32:06,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604140053] [2023-02-16 03:32:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:32:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:32:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:32:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:32:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:32:07,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604140053] [2023-02-16 03:32:07,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604140053] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:32:07,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102522238] [2023-02-16 03:32:07,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:32:07,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:32:07,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:32:07,301 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:32:07,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 03:32:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:32:07,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-16 03:32:07,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:32:07,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-16 03:32:07,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-16 03:32:07,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2023-02-16 03:32:07,492 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 28 treesize of output 23 [2023-02-16 03:32:07,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 23 [2023-02-16 03:32:07,537 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 21 treesize of output 20 [2023-02-16 03:32:07,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:07,744 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 21 treesize of output 20 [2023-02-16 03:32:07,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:07,767 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 28 treesize of output 23 [2023-02-16 03:32:07,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-02-16 03:32:08,301 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:32:08,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2023-02-16 03:32:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:32:08,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:32:08,416 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 20 treesize of output 16 [2023-02-16 03:32:09,342 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-16 03:32:09,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 709 treesize of output 1 [2023-02-16 03:32:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:32:09,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102522238] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:32:09,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:32:09,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 21 [2023-02-16 03:32:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108652118] [2023-02-16 03:32:09,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:32:09,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 03:32:09,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:32:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 03:32:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-02-16 03:32:09,345 INFO L87 Difference]: Start difference. First operand 232 states and 273 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:32:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:32:12,017 INFO L93 Difference]: Finished difference Result 257 states and 291 transitions. [2023-02-16 03:32:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 03:32:12,018 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 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 30 [2023-02-16 03:32:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:32:12,019 INFO L225 Difference]: With dead ends: 257 [2023-02-16 03:32:12,019 INFO L226 Difference]: Without dead ends: 257 [2023-02-16 03:32:12,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=368, Invalid=1114, Unknown=0, NotChecked=0, Total=1482 [2023-02-16 03:32:12,020 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 461 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:32:12,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 481 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-16 03:32:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-02-16 03:32:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 218. [2023-02-16 03:32:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 201 states have (on average 1.2487562189054726) internal successors, (251), 217 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:32:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 251 transitions. [2023-02-16 03:32:12,027 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 251 transitions. Word has length 30 [2023-02-16 03:32:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:32:12,027 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 251 transitions. [2023-02-16 03:32:12,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:32:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 251 transitions. [2023-02-16 03:32:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 03:32:12,028 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:32:12,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2023-02-16 03:32:12,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-16 03:32:12,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:32:12,237 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:32:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:32:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1483366933, now seen corresponding path program 1 times [2023-02-16 03:32:12,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:32:12,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908184553] [2023-02-16 03:32:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:32:12,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:32:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:32:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:32:12,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:32:12,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908184553] [2023-02-16 03:32:12,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908184553] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:32:12,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219746420] [2023-02-16 03:32:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:32:12,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:32:12,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:32:12,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:32:12,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 03:32:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:32:13,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-16 03:32:13,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:32:13,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-16 03:32:13,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-16 03:32:13,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:13,101 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 21 treesize of output 20 [2023-02-16 03:32:13,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:13,122 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 21 treesize of output 20 [2023-02-16 03:32:13,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:13,139 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 21 treesize of output 20 [2023-02-16 03:32:13,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:13,167 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 21 treesize of output 20 [2023-02-16 03:32:13,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:13,398 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 21 treesize of output 20 [2023-02-16 03:32:13,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:13,408 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 21 treesize of output 20 [2023-02-16 03:32:14,097 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:32:14,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 24 [2023-02-16 03:32:14,399 INFO L321 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2023-02-16 03:32:14,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 24 [2023-02-16 03:32:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:32:14,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:32:14,602 INFO L321 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2023-02-16 03:32:14,602 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 24 treesize of output 23 [2023-02-16 03:32:38,668 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-16 03:32:38,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 15720419 treesize of output 1 [2023-02-16 03:32:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:32:38,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219746420] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:32:38,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:32:38,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 23 [2023-02-16 03:32:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735590129] [2023-02-16 03:32:38,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:32:38,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 03:32:38,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:32:38,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 03:32:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=465, Unknown=10, NotChecked=0, Total=552 [2023-02-16 03:32:38,672 INFO L87 Difference]: Start difference. First operand 218 states and 251 transitions. Second operand has 24 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:32:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:32:41,287 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2023-02-16 03:32:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:32:41,287 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2023-02-16 03:32:41,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:32:41,288 INFO L225 Difference]: With dead ends: 251 [2023-02-16 03:32:41,288 INFO L226 Difference]: Without dead ends: 251 [2023-02-16 03:32:41,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=260, Invalid=920, Unknown=10, NotChecked=0, Total=1190 [2023-02-16 03:32:41,289 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 414 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:32:41,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 664 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-16 03:32:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-02-16 03:32:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2023-02-16 03:32:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 202 states have (on average 1.2524752475247525) internal successors, (253), 218 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:32:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 253 transitions. [2023-02-16 03:32:41,293 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 253 transitions. Word has length 31 [2023-02-16 03:32:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:32:41,293 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 253 transitions. [2023-02-16 03:32:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:32:41,294 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 253 transitions. [2023-02-16 03:32:41,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 03:32:41,294 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:32:41,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2023-02-16 03:32:41,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-16 03:32:41,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:32:41,499 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:32:41,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:32:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1483366934, now seen corresponding path program 1 times [2023-02-16 03:32:41,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:32:41,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154652679] [2023-02-16 03:32:41,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:32:41,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:32:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:32:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:32:42,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:32:42,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154652679] [2023-02-16 03:32:42,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154652679] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:32:42,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035975340] [2023-02-16 03:32:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:32:42,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:32:42,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:32:42,367 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:32:42,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 03:32:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:32:42,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-16 03:32:42,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:32:42,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-16 03:32:42,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-16 03:32:42,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:42,648 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 21 treesize of output 20 [2023-02-16 03:32:42,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:42,661 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 21 treesize of output 20 [2023-02-16 03:32:42,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:42,707 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 21 treesize of output 20 [2023-02-16 03:32:42,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:42,723 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 21 treesize of output 20 [2023-02-16 03:32:42,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:42,954 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 21 treesize of output 20 [2023-02-16 03:32:42,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:32:42,964 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 21 treesize of output 20 [2023-02-16 03:32:44,138 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:32:44,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 35 [2023-02-16 03:32:44,175 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:32:44,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2023-02-16 03:32:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 03:32:44,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:32:44,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:32:44,969 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 58 treesize of output 62 [2023-02-16 03:33:07,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:33:07,756 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:33:07,768 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-16 03:33:07,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 25702 treesize of output 1 [2023-02-16 03:33:07,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:33:07,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:33:07,790 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 03:33:07,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 347 treesize of output 1 [2023-02-16 03:33:07,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:33:07,802 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:33:07,811 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 03:33:07,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 303 treesize of output 1 [2023-02-16 03:33:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:33:07,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035975340] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:33:07,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:33:07,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 28 [2023-02-16 03:33:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097943572] [2023-02-16 03:33:07,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:33:07,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-16 03:33:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:33:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-16 03:33:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=701, Unknown=9, NotChecked=0, Total=812 [2023-02-16 03:33:07,815 INFO L87 Difference]: Start difference. First operand 219 states and 253 transitions. Second operand has 29 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 29 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:33:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:33:11,809 INFO L93 Difference]: Finished difference Result 234 states and 262 transitions. [2023-02-16 03:33:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 03:33:11,810 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 29 states have internal predecessors, (89), 0 states have call successors, (0), 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 [2023-02-16 03:33:11,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:33:11,811 INFO L225 Difference]: With dead ends: 234 [2023-02-16 03:33:11,811 INFO L226 Difference]: Without dead ends: 234 [2023-02-16 03:33:11,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=231, Invalid=1020, Unknown=9, NotChecked=0, Total=1260 [2023-02-16 03:33:11,812 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 402 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:33:11,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 714 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-16 03:33:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-02-16 03:33:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 219. [2023-02-16 03:33:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 202 states have (on average 1.2376237623762376) internal successors, (250), 218 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:33:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 250 transitions. [2023-02-16 03:33:11,815 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 250 transitions. Word has length 31 [2023-02-16 03:33:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:33:11,816 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 250 transitions. [2023-02-16 03:33:11,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 29 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:33:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 250 transitions. [2023-02-16 03:33:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 03:33:11,816 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:33:11,816 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-02-16 03:33:11,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 03:33:12,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-02-16 03:33:12,017 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-02-16 03:33:12,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:33:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1167832649, now seen corresponding path program 1 times [2023-02-16 03:33:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:33:12,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367638544] [2023-02-16 03:33:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:33:12,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:33:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:33:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:33:13,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:33:13,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367638544] [2023-02-16 03:33:13,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367638544] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:33:13,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189255619] [2023-02-16 03:33:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:33:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:33:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:33:13,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:33:13,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 03:33:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:33:14,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 60 conjunts are in the unsatisfiable core [2023-02-16 03:33:14,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:33:14,049 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 [2023-02-16 03:33:14,294 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:33:14,294 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 11 [2023-02-16 03:33:14,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-02-16 03:33:14,419 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 [2023-02-16 03:33:14,710 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:33:14,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-02-16 03:33:14,724 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 18 treesize of output 20 [2023-02-16 03:33:15,083 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:33:15,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2023-02-16 03:33:15,108 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 11 treesize of output 7 [2023-02-16 03:33:15,127 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:33:15,152 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-16 03:33:15,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-02-16 03:33:15,450 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:33:15,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2023-02-16 03:33:15,468 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 11 treesize of output 7 [2023-02-16 03:33:15,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:33:15,499 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:33:15,501 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 03:33:15,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 34 [2023-02-16 03:33:15,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:33:15,695 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 03:33:15,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 48 [2023-02-16 03:33:15,707 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 33 treesize of output 33 [2023-02-16 03:33:15,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 18 [2023-02-16 03:33:16,150 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 03:33:16,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2023-02-16 03:33:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:33:16,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:33:18,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:33:18,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 216 [2023-02-16 03:33:18,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:33:18,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 133 [2023-02-16 03:33:21,421 INFO L321 Elim1Store]: treesize reduction 204, result has 60.2 percent of original size [2023-02-16 03:33:21,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 10968 treesize of output 9522 [2023-02-16 03:33:21,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:33:21,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20982 treesize of output 18905 [2023-02-16 03:33:21,587 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 18160 treesize of output 17776 [2023-02-16 03:33:21,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:33:21,654 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 18506 treesize of output 17472 [2023-02-16 03:33:22,075 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:33:22,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 31977 treesize of output 30257 [2023-02-16 03:33:25,284 INFO L217 Elim1Store]: Index analysis took 3107 ms [2023-02-16 03:34:26,229 WARN L233 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 2202 DAG size of output: 1822 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-16 03:34:26,245 INFO L321 Elim1Store]: treesize reduction 1488, result has 83.5 percent of original size [2023-02-16 03:34:26,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 528 case distinctions, treesize of input 29530 treesize of output 34376