./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext_1.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/list-ext-properties/list-ext_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e978ccdde62c7126e7c77a584896efdc6e7afe04b6752d127d7236cecdea192f --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:19:43,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:19:43,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:19:43,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:19:43,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:19:43,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:19:43,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:19:43,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:19:43,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:19:43,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:19:43,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:19:43,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:19:43,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:19:43,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:19:43,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:19:43,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:19:43,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:19:43,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:19:43,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:19:43,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:19:43,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:19:43,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:19:43,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:19:43,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:19:43,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:19:43,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:19:43,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:19:43,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:19:43,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:19:43,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:19:43,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:19:43,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:19:43,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:19:43,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:19:43,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:19:43,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:19:43,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:19:43,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:19:43,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:19:43,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:19:43,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:19:43,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-16 03:19:43,499 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:19:43,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:19:43,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:19:43,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:19:43,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:19:43,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:19:43,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:19:43,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:19:43,508 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:19:43,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:19:43,509 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:19:43,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:19:43,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:19:43,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:19:43,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:19:43,509 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:19:43,509 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:19:43,510 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:19:43,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:19:43,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:19:43,510 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:19:43,510 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:19:43,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:19:43,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:19:43,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:19:43,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:19:43,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:19:43,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:19:43,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 03:19:43,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 03:19:43,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:19:43,512 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:19:43,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:19:43,512 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:19:43,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e978ccdde62c7126e7c77a584896efdc6e7afe04b6752d127d7236cecdea192f [2023-02-16 03:19:43,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:19:43,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:19:43,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:19:43,681 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:19:43,682 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:19:43,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_1.i [2023-02-16 03:19:44,644 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:19:44,854 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:19:44,854 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_1.i [2023-02-16 03:19:44,863 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f96e3dbf/64ad4f6d4fd947008b6290a84ec890de/FLAG0cb22185d [2023-02-16 03:19:44,872 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f96e3dbf/64ad4f6d4fd947008b6290a84ec890de [2023-02-16 03:19:44,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:19:44,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:19:44,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:19:44,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:19:44,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:19:44,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:19:44" (1/1) ... [2023-02-16 03:19:44,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3e7381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:44, skipping insertion in model container [2023-02-16 03:19:44,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:19:44" (1/1) ... [2023-02-16 03:19:44,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:19:44,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:19:45,112 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/list-ext-properties/list-ext_1.i[23553,23566] [2023-02-16 03:19:45,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:19:45,128 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 03:19:45,151 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/list-ext-properties/list-ext_1.i[23553,23566] [2023-02-16 03:19:45,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:19:45,175 INFO L208 MainTranslator]: Completed translation [2023-02-16 03:19:45,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45 WrapperNode [2023-02-16 03:19:45,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:19:45,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 03:19:45,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 03:19:45,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 03:19:45,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,214 INFO L138 Inliner]: procedures = 124, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 128 [2023-02-16 03:19:45,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 03:19:45,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 03:19:45,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 03:19:45,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 03:19:45,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 03:19:45,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 03:19:45,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 03:19:45,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 03:19:45,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (1/1) ... [2023-02-16 03:19:45,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:19:45,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:19:45,296 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 03:19:45,298 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 03:19:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-02-16 03:19:45,322 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-02-16 03:19:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 03:19:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 03:19:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 03:19:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 03:19:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 03:19:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 03:19:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 03:19:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 03:19:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 03:19:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 03:19:45,395 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 03:19:45,396 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 03:19:45,420 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-02-16 03:19:45,585 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 03:19:45,590 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 03:19:45,590 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-16 03:19:45,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:19:45 BoogieIcfgContainer [2023-02-16 03:19:45,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 03:19:45,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 03:19:45,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 03:19:45,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 03:19:45,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:19:44" (1/3) ... [2023-02-16 03:19:45,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126054bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:19:45, skipping insertion in model container [2023-02-16 03:19:45,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:19:45" (2/3) ... [2023-02-16 03:19:45,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126054bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:19:45, skipping insertion in model container [2023-02-16 03:19:45,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:19:45" (3/3) ... [2023-02-16 03:19:45,597 INFO L112 eAbstractionObserver]: Analyzing ICFG list-ext_1.i [2023-02-16 03:19:45,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 03:19:45,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-02-16 03:19:45,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 03:19:45,644 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;@2ad04466, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 03:19:45,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-02-16 03:19:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 91 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 03:19:45,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:45,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:19:45,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2098269937, now seen corresponding path program 1 times [2023-02-16 03:19:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:45,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956584881] [2023-02-16 03:19:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:45,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:45,818 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 03:19:45,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:45,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956584881] [2023-02-16 03:19:45,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956584881] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:45,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:45,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:19:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230034431] [2023-02-16 03:19:45,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:45,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 03:19:45,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 03:19:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 03:19:45,854 INFO L87 Difference]: Start difference. First operand has 93 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 91 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:45,874 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2023-02-16 03:19:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 03:19:45,877 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-16 03:19:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:45,882 INFO L225 Difference]: With dead ends: 93 [2023-02-16 03:19:45,883 INFO L226 Difference]: Without dead ends: 86 [2023-02-16 03:19:45,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 03:19:45,886 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:45,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:19:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-16 03:19:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-02-16 03:19:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 85 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 03:19:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2023-02-16 03:19:45,916 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2023-02-16 03:19:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:45,916 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2023-02-16 03:19:45,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2023-02-16 03:19:45,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 03:19:45,917 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:45,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:19:45,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 03:19:45,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash 620871786, now seen corresponding path program 1 times [2023-02-16 03:19:45,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:45,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619856977] [2023-02-16 03:19:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:45,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:46,061 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 03:19:46,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:46,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619856977] [2023-02-16 03:19:46,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619856977] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:46,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:46,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:19:46,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090803139] [2023-02-16 03:19:46,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:46,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:19:46,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:46,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:19:46,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:19:46,065 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:46,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:46,220 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2023-02-16 03:19:46,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:19:46,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-16 03:19:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:46,221 INFO L225 Difference]: With dead ends: 107 [2023-02-16 03:19:46,222 INFO L226 Difference]: Without dead ends: 107 [2023-02-16 03:19:46,222 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 03:19:46,223 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 162 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:46,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 52 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-16 03:19:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2023-02-16 03:19:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 86 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:19:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2023-02-16 03:19:46,228 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 8 [2023-02-16 03:19:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:46,229 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2023-02-16 03:19:46,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2023-02-16 03:19:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 03:19:46,229 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:46,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:19:46,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 03:19:46,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:46,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 620871787, now seen corresponding path program 1 times [2023-02-16 03:19:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:46,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202676862] [2023-02-16 03:19:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:46,316 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 03:19:46,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:46,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202676862] [2023-02-16 03:19:46,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202676862] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:46,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:46,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:19:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359003972] [2023-02-16 03:19:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:46,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:19:46,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:19:46,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:19:46,318 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:46,428 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2023-02-16 03:19:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:19:46,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-16 03:19:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:46,429 INFO L225 Difference]: With dead ends: 124 [2023-02-16 03:19:46,429 INFO L226 Difference]: Without dead ends: 124 [2023-02-16 03:19:46,430 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 03:19:46,430 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 170 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:46,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 60 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-02-16 03:19:46,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2023-02-16 03:19:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 80 states have (on average 1.5125) internal successors, (121), 106 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 03:19:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2023-02-16 03:19:46,451 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 8 [2023-02-16 03:19:46,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:46,451 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2023-02-16 03:19:46,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:46,452 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2023-02-16 03:19:46,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 03:19:46,452 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:46,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:19:46,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 03:19:46,453 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:46,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1332204644, now seen corresponding path program 1 times [2023-02-16 03:19:46,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:46,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768541426] [2023-02-16 03:19:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:46,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:19:46,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:46,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768541426] [2023-02-16 03:19:46,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768541426] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:46,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:46,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:19:46,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583057949] [2023-02-16 03:19:46,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:46,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:19:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:19:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:19:46,559 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:46,740 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2023-02-16 03:19:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:19:46,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-16 03:19:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:46,742 INFO L225 Difference]: With dead ends: 152 [2023-02-16 03:19:46,742 INFO L226 Difference]: Without dead ends: 152 [2023-02-16 03:19:46,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:19:46,743 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 116 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:46,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 240 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-02-16 03:19:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 111. [2023-02-16 03:19:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 110 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2023-02-16 03:19:46,747 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 17 [2023-02-16 03:19:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:46,748 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2023-02-16 03:19:46,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2023-02-16 03:19:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 03:19:46,749 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:46,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:19:46,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 03:19:46,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:46,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1332204645, now seen corresponding path program 1 times [2023-02-16 03:19:46,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:46,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426911840] [2023-02-16 03:19:46,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:46,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:19:46,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:46,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426911840] [2023-02-16 03:19:46,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426911840] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:46,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:46,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:19:46,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113451577] [2023-02-16 03:19:46,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:46,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:19:46,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:46,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:19:46,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:19:46,887 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:47,113 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2023-02-16 03:19:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:19:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-16 03:19:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:47,114 INFO L225 Difference]: With dead ends: 155 [2023-02-16 03:19:47,114 INFO L226 Difference]: Without dead ends: 155 [2023-02-16 03:19:47,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:19:47,121 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 80 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:47,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 307 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:19:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-16 03:19:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 95. [2023-02-16 03:19:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 94 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 03:19:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2023-02-16 03:19:47,127 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 17 [2023-02-16 03:19:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:47,128 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2023-02-16 03:19:47,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2023-02-16 03:19:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 03:19:47,132 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:47,132 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 03:19:47,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 03:19:47,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:47,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:47,134 INFO L85 PathProgramCache]: Analyzing trace with hash -808483032, now seen corresponding path program 1 times [2023-02-16 03:19:47,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:47,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52514470] [2023-02-16 03:19:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:47,283 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 03:19:47,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:47,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52514470] [2023-02-16 03:19:47,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52514470] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:47,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:47,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:19:47,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420516819] [2023-02-16 03:19:47,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:47,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:19:47,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:47,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:19:47,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:19:47,285 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 03:19:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:47,415 INFO L93 Difference]: Finished difference Result 202 states and 221 transitions. [2023-02-16 03:19:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:19:47,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 03:19:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:47,416 INFO L225 Difference]: With dead ends: 202 [2023-02-16 03:19:47,416 INFO L226 Difference]: Without dead ends: 202 [2023-02-16 03:19:47,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:19:47,417 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 147 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:47,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 236 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-02-16 03:19:47,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 106. [2023-02-16 03:19:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 105 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2023-02-16 03:19:47,420 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 18 [2023-02-16 03:19:47,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:47,421 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2023-02-16 03:19:47,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 03:19:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2023-02-16 03:19:47,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 03:19:47,421 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:47,421 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] [2023-02-16 03:19:47,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-16 03:19:47,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash 389256394, now seen corresponding path program 1 times [2023-02-16 03:19:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:47,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125249257] [2023-02-16 03:19:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:47,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:47,550 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 03:19:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:47,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125249257] [2023-02-16 03:19:47,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125249257] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:47,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:47,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:19:47,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139224222] [2023-02-16 03:19:47,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:47,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:19:47,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:47,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:19:47,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:19:47,554 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 03:19:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:47,706 INFO L93 Difference]: Finished difference Result 199 states and 216 transitions. [2023-02-16 03:19:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:19:47,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-16 03:19:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:47,707 INFO L225 Difference]: With dead ends: 199 [2023-02-16 03:19:47,707 INFO L226 Difference]: Without dead ends: 199 [2023-02-16 03:19:47,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:19:47,710 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 195 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:47,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 190 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-02-16 03:19:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 110. [2023-02-16 03:19:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 87 states have (on average 1.4597701149425288) internal successors, (127), 109 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 03:19:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2023-02-16 03:19:47,717 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 20 [2023-02-16 03:19:47,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:47,717 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2023-02-16 03:19:47,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 03:19:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2023-02-16 03:19:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 03:19:47,733 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:47,733 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] [2023-02-16 03:19:47,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 03:19:47,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:47,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:47,734 INFO L85 PathProgramCache]: Analyzing trace with hash 389308949, now seen corresponding path program 1 times [2023-02-16 03:19:47,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:47,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422055932] [2023-02-16 03:19:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:47,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:47,829 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 03:19:47,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:47,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422055932] [2023-02-16 03:19:47,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422055932] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:47,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:47,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:19:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386031192] [2023-02-16 03:19:47,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:19:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:19:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:19:47,831 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 03:19:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:47,963 INFO L93 Difference]: Finished difference Result 183 states and 202 transitions. [2023-02-16 03:19:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:19:47,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-16 03:19:47,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:47,967 INFO L225 Difference]: With dead ends: 183 [2023-02-16 03:19:47,967 INFO L226 Difference]: Without dead ends: 183 [2023-02-16 03:19:47,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:19:47,968 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 144 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:47,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 234 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:47,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-02-16 03:19:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 110. [2023-02-16 03:19:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 109 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 03:19:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2023-02-16 03:19:47,973 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 20 [2023-02-16 03:19:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:47,974 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2023-02-16 03:19:47,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 03:19:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2023-02-16 03:19:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 03:19:47,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:47,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:19:47,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 03:19:47,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:47,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1064403471, now seen corresponding path program 1 times [2023-02-16 03:19:47,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47088273] [2023-02-16 03:19:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:47,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:48,031 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 03:19:48,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:48,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47088273] [2023-02-16 03:19:48,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47088273] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:48,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:48,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:19:48,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995002011] [2023-02-16 03:19:48,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:48,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:19:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:48,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:19:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:19:48,033 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 03:19:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:48,168 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2023-02-16 03:19:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:19:48,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-16 03:19:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:48,169 INFO L225 Difference]: With dead ends: 122 [2023-02-16 03:19:48,170 INFO L226 Difference]: Without dead ends: 122 [2023-02-16 03:19:48,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:19:48,170 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 109 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:48,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 196 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:48,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-02-16 03:19:48,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2023-02-16 03:19:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 87 states have (on average 1.4252873563218391) internal successors, (124), 107 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:19:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2023-02-16 03:19:48,172 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 20 [2023-02-16 03:19:48,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:48,173 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2023-02-16 03:19:48,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 03:19:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2023-02-16 03:19:48,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 03:19:48,173 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:48,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:19:48,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-16 03:19:48,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:48,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1064403472, now seen corresponding path program 1 times [2023-02-16 03:19:48,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:48,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606104996] [2023-02-16 03:19:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:48,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:48,309 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 03:19:48,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606104996] [2023-02-16 03:19:48,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606104996] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:48,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:48,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:19:48,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780605531] [2023-02-16 03:19:48,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:48,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:19:48,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:19:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:19:48,311 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 03:19:48,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:48,478 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2023-02-16 03:19:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:19:48,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-16 03:19:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:48,479 INFO L225 Difference]: With dead ends: 120 [2023-02-16 03:19:48,479 INFO L226 Difference]: Without dead ends: 120 [2023-02-16 03:19:48,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:19:48,480 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 72 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:48,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 250 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-16 03:19:48,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2023-02-16 03:19:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 92 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 03:19:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2023-02-16 03:19:48,481 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 20 [2023-02-16 03:19:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:48,481 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2023-02-16 03:19:48,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 03:19:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2023-02-16 03:19:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 03:19:48,482 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:48,482 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 03:19:48,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-16 03:19:48,482 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:48,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2138921840, now seen corresponding path program 1 times [2023-02-16 03:19:48,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:48,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194271960] [2023-02-16 03:19:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:48,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:48,514 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 03:19:48,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:48,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194271960] [2023-02-16 03:19:48,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194271960] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:48,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:48,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:19:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833043622] [2023-02-16 03:19:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:48,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:19:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:19:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:19:48,516 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 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 03:19:48,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:48,579 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2023-02-16 03:19:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:19:48,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 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 03:19:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:48,580 INFO L225 Difference]: With dead ends: 113 [2023-02-16 03:19:48,580 INFO L226 Difference]: Without dead ends: 113 [2023-02-16 03:19:48,581 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 03:19:48,581 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 127 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:48,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 69 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-02-16 03:19:48,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2023-02-16 03:19:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 79 states have (on average 1.379746835443038) internal successors, (109), 94 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 03:19:48,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2023-02-16 03:19:48,583 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 24 [2023-02-16 03:19:48,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:48,583 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2023-02-16 03:19:48,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 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 03:19:48,584 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2023-02-16 03:19:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 03:19:48,584 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:48,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:19:48,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-16 03:19:48,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1785439949, now seen corresponding path program 1 times [2023-02-16 03:19:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:48,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788104527] [2023-02-16 03:19:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:48,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:48,700 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 03:19:48,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:48,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788104527] [2023-02-16 03:19:48,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788104527] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:19:48,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:19:48,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:19:48,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100796741] [2023-02-16 03:19:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:19:48,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:19:48,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:19:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:19:48,703 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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 03:19:48,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:48,826 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2023-02-16 03:19:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:19:48,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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 03:19:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:48,827 INFO L225 Difference]: With dead ends: 128 [2023-02-16 03:19:48,827 INFO L226 Difference]: Without dead ends: 124 [2023-02-16 03:19:48,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:19:48,828 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 73 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:48,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 163 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:19:48,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-02-16 03:19:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2023-02-16 03:19:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 97 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 03:19:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2023-02-16 03:19:48,830 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 26 [2023-02-16 03:19:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:48,830 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2023-02-16 03:19:48,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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 03:19:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2023-02-16 03:19:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 03:19:48,830 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:48,830 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] [2023-02-16 03:19:48,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-16 03:19:48,831 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1628820970, now seen corresponding path program 1 times [2023-02-16 03:19:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:48,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215326375] [2023-02-16 03:19:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:48,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:19:49,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:49,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215326375] [2023-02-16 03:19:49,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215326375] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:19:49,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057440184] [2023-02-16 03:19:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:49,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:19:49,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:19:49,042 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 03:19:49,058 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 03:19:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:49,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-16 03:19:49,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:19:49,282 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 03:19:49,339 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:19:49,339 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 03:19:49,387 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 13 treesize of output 9 [2023-02-16 03:19:49,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:19:49,392 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 03:19:49,415 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 20 treesize of output 8 [2023-02-16 03:19:49,459 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 03:19:49,467 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 03:19:49,496 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 03:19:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:19:49,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:19:49,538 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int))) (not (= 1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_205) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2023-02-16 03:19:49,688 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:19:49,689 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 2 case distinctions, treesize of input 24 treesize of output 30 [2023-02-16 03:19:49,699 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-02-16 03:19:49,699 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 33 treesize of output 32 [2023-02-16 03:19:49,703 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 18 [2023-02-16 03:19:49,711 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:19:49,712 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 13 treesize of output 12 [2023-02-16 03:19:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-02-16 03:19:49,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057440184] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:19:49,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:19:49,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 29 [2023-02-16 03:19:49,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611264449] [2023-02-16 03:19:49,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:19:49,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-16 03:19:49,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:19:49,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-16 03:19:49,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=601, Unknown=18, NotChecked=52, Total=812 [2023-02-16 03:19:49,764 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 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 03:19:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:19:50,509 INFO L93 Difference]: Finished difference Result 221 states and 240 transitions. [2023-02-16 03:19:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 03:19:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 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 27 [2023-02-16 03:19:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:19:50,512 INFO L225 Difference]: With dead ends: 221 [2023-02-16 03:19:50,512 INFO L226 Difference]: Without dead ends: 221 [2023-02-16 03:19:50,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=390, Invalid=1398, Unknown=22, NotChecked=82, Total=1892 [2023-02-16 03:19:50,513 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 378 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 52 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:19:50,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 715 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 920 Invalid, 4 Unknown, 106 Unchecked, 0.5s Time] [2023-02-16 03:19:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-02-16 03:19:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 112. [2023-02-16 03:19:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 96 states have (on average 1.3333333333333333) internal successors, (128), 111 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 03:19:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2023-02-16 03:19:50,515 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 27 [2023-02-16 03:19:50,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:19:50,515 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2023-02-16 03:19:50,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 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 03:19:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2023-02-16 03:19:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 03:19:50,515 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:19:50,515 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] [2023-02-16 03:19:50,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 03:19:50,716 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,SelfDestructingSolverStorable12 [2023-02-16 03:19:50,717 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:19:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:19:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash 324037282, now seen corresponding path program 1 times [2023-02-16 03:19:50,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:19:50,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107403331] [2023-02-16 03:19:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:50,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:19:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:51,011 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 03:19:51,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:19:51,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107403331] [2023-02-16 03:19:51,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107403331] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:19:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070374406] [2023-02-16 03:19:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:19:51,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:19:51,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:19:51,013 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 03:19:51,042 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 03:19:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:19:51,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-16 03:19:51,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:19:51,167 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:19:51,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 03:19:51,199 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 13 treesize of output 9 [2023-02-16 03:19:51,322 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:19:51,322 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 03:19:51,334 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:19:51,335 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 28 treesize of output 29 [2023-02-16 03:19:51,410 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:19:51,411 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2023-02-16 03:19:51,449 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 03:19:51,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:19:51,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:19:51,660 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 24 treesize of output 25 [2023-02-16 03:19:51,665 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:19:51,665 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 40 treesize of output 39 [2023-02-16 03:19:51,668 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 13 treesize of output 9 [2023-02-16 03:19:54,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:19:54,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 111 treesize of output 381 [2023-02-16 03:20:18,286 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 03:20:18,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070374406] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:20:18,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:20:18,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2023-02-16 03:20:18,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670292045] [2023-02-16 03:20:18,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:20:18,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-16 03:20:18,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:20:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-16 03:20:18,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=946, Unknown=8, NotChecked=0, Total=1122 [2023-02-16 03:20:18,290 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 34 states, 33 states have (on average 2.272727272727273) internal successors, (75), 34 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 03:20:19,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:20:19,277 INFO L93 Difference]: Finished difference Result 230 states and 257 transitions. [2023-02-16 03:20:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 03:20:19,278 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.272727272727273) internal successors, (75), 34 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 27 [2023-02-16 03:20:19,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:20:19,279 INFO L225 Difference]: With dead ends: 230 [2023-02-16 03:20:19,279 INFO L226 Difference]: Without dead ends: 230 [2023-02-16 03:20:19,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=330, Invalid=1468, Unknown=8, NotChecked=0, Total=1806 [2023-02-16 03:20:19,280 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 514 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:20:19,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 995 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-16 03:20:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-02-16 03:20:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 132. [2023-02-16 03:20:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 131 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:20:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2023-02-16 03:20:19,283 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 27 [2023-02-16 03:20:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:20:19,284 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2023-02-16 03:20:19,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.272727272727273) internal successors, (75), 34 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 03:20:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2023-02-16 03:20:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 03:20:19,284 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:20:19,284 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] [2023-02-16 03:20:19,290 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 03:20:19,490 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,SelfDestructingSolverStorable13 [2023-02-16 03:20:19,490 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:20:19,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:20:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash 324037283, now seen corresponding path program 1 times [2023-02-16 03:20:19,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:20:19,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341782594] [2023-02-16 03:20:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:20:19,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:20:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:20:19,880 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 03:20:19,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:20:19,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341782594] [2023-02-16 03:20:19,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341782594] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:20:19,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782547754] [2023-02-16 03:20:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:20:19,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:20:19,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:20:19,897 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 03:20:19,948 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 03:20:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:20:20,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-16 03:20:20,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:20:20,041 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:20:20,041 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 03:20:20,049 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 03:20:20,072 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 13 treesize of output 9 [2023-02-16 03:20:20,081 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 13 treesize of output 9 [2023-02-16 03:20:20,186 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:20:20,186 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 03:20:20,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:20:20,193 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 03:20:20,214 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:20:20,214 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 03:20:20,217 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 03:20:20,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:20:20,303 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2023-02-16 03:20:20,306 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:20:20,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:20,308 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 27 treesize of output 16 [2023-02-16 03:20:20,313 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 03:20:20,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:20:20,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:20,703 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 45 treesize of output 46 [2023-02-16 03:20:20,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:20,707 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 35 treesize of output 36 [2023-02-16 03:20:20,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:20,715 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 62 treesize of output 61 [2023-02-16 03:20:20,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:20,724 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 96 treesize of output 89 [2023-02-16 03:20:20,728 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 40 treesize of output 32 [2023-02-16 03:20:20,731 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 66 treesize of output 58 [2023-02-16 03:20:20,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:20,804 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 22 treesize of output 23 [2023-02-16 03:20:20,806 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:20:20,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:20:20,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:20:20,809 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2023-02-16 03:20:20,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:20,955 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 59 treesize of output 129 [2023-02-16 03:20:21,194 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 03:20:21,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782547754] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:20:21,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:20:21,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2023-02-16 03:20:21,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834682287] [2023-02-16 03:20:21,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:20:21,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-16 03:20:21,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:20:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-16 03:20:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=736, Unknown=6, NotChecked=0, Total=870 [2023-02-16 03:20:21,196 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:20:22,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:20:22,221 INFO L93 Difference]: Finished difference Result 236 states and 264 transitions. [2023-02-16 03:20:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 03:20:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-16 03:20:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:20:22,222 INFO L225 Difference]: With dead ends: 236 [2023-02-16 03:20:22,222 INFO L226 Difference]: Without dead ends: 236 [2023-02-16 03:20:22,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=382, Invalid=1504, Unknown=6, NotChecked=0, Total=1892 [2023-02-16 03:20:22,223 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 428 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:20:22,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 983 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 03:20:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-02-16 03:20:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 129. [2023-02-16 03:20:22,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 114 states have (on average 1.3070175438596492) internal successors, (149), 128 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:20:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2023-02-16 03:20:22,234 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 27 [2023-02-16 03:20:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:20:22,234 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2023-02-16 03:20:22,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:20:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2023-02-16 03:20:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 03:20:22,236 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:20:22,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:20:22,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 03:20:22,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:20:22,437 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:20:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:20:22,437 INFO L85 PathProgramCache]: Analyzing trace with hash -754040858, now seen corresponding path program 1 times [2023-02-16 03:20:22,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:20:22,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81530137] [2023-02-16 03:20:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:20:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:20:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:20:22,591 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 03:20:22,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:20:22,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81530137] [2023-02-16 03:20:22,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81530137] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:20:22,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:20:22,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:20:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404441682] [2023-02-16 03:20:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:20:22,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:20:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:20:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:20:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:20:22,594 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:20:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:20:22,726 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2023-02-16 03:20:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:20:22,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-16 03:20:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:20:22,727 INFO L225 Difference]: With dead ends: 146 [2023-02-16 03:20:22,727 INFO L226 Difference]: Without dead ends: 134 [2023-02-16 03:20:22,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:20:22,728 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 122 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:20:22,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 169 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:20:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-02-16 03:20:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2023-02-16 03:20:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.3333333333333333) internal successors, (136), 116 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:20:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2023-02-16 03:20:22,730 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 28 [2023-02-16 03:20:22,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:20:22,730 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2023-02-16 03:20:22,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:20:22,730 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2023-02-16 03:20:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 03:20:22,730 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:20:22,730 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] [2023-02-16 03:20:22,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-16 03:20:22,730 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:20:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:20:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1881225996, now seen corresponding path program 1 times [2023-02-16 03:20:22,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:20:22,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183616266] [2023-02-16 03:20:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:20:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:20:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:20:22,945 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 03:20:22,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:20:22,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183616266] [2023-02-16 03:20:22,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183616266] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:20:22,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117680327] [2023-02-16 03:20:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:20:22,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:20:22,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:20:22,958 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 03:20:22,959 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 03:20:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:20:23,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-16 03:20:23,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:20:23,087 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 03:20:23,120 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:20:23,121 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 03:20:23,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:20:23,147 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 03:20:23,165 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 13 treesize of output 9 [2023-02-16 03:20:23,188 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 20 treesize of output 8 [2023-02-16 03:20:23,242 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 03:20:23,247 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 03:20:23,283 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 03:20:23,285 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 03:20:23,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:20:23,302 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_410 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_410) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2023-02-16 03:20:23,331 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_410 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_410) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2023-02-16 03:20:23,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:23,382 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 2 case distinctions, treesize of input 23 treesize of output 29 [2023-02-16 03:20:23,390 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-02-16 03:20:23,390 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 30 treesize of output 29 [2023-02-16 03:20:23,394 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 9 treesize of output 7 [2023-02-16 03:20:23,401 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:20:23,401 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 13 treesize of output 12 [2023-02-16 03:20:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-02-16 03:20:23,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117680327] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:20:23,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:20:23,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 26 [2023-02-16 03:20:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644995943] [2023-02-16 03:20:23,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:20:23,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 03:20:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:20:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 03:20:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=438, Unknown=10, NotChecked=90, Total=650 [2023-02-16 03:20:23,439 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 03:20:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:20:24,018 INFO L93 Difference]: Finished difference Result 197 states and 221 transitions. [2023-02-16 03:20:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:20:24,018 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 0 states have call successors, (0), 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 03:20:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:20:24,019 INFO L225 Difference]: With dead ends: 197 [2023-02-16 03:20:24,019 INFO L226 Difference]: Without dead ends: 197 [2023-02-16 03:20:24,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=862, Unknown=11, NotChecked=130, Total=1260 [2023-02-16 03:20:24,020 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 280 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 29 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:20:24,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 529 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 633 Invalid, 6 Unknown, 224 Unchecked, 0.4s Time] [2023-02-16 03:20:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-16 03:20:24,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 119. [2023-02-16 03:20:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 118 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 03:20:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2023-02-16 03:20:24,022 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 29 [2023-02-16 03:20:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:20:24,022 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2023-02-16 03:20:24,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 03:20:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2023-02-16 03:20:24,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 03:20:24,022 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:20:24,022 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] [2023-02-16 03:20:24,043 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 03:20:24,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-16 03:20:24,223 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:20:24,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:20:24,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1881278551, now seen corresponding path program 1 times [2023-02-16 03:20:24,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:20:24,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632701018] [2023-02-16 03:20:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:20:24,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:20:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:20:24,500 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 03:20:24,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:20:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632701018] [2023-02-16 03:20:24,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632701018] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:20:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122506335] [2023-02-16 03:20:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:20:24,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:20:24,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:20:24,502 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 03:20:24,560 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 03:20:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:20:24,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-16 03:20:24,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:20:24,683 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:20:24,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 03:20:24,714 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 13 treesize of output 9 [2023-02-16 03:20:24,808 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:20:24,809 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 37 treesize of output 35 [2023-02-16 03:20:24,823 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:20:24,823 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 34 treesize of output 35 [2023-02-16 03:20:24,917 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:20:24,918 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-02-16 03:20:24,952 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 03:20:24,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:20:25,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:25,145 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 24 treesize of output 25 [2023-02-16 03:20:25,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:25,153 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 40 treesize of output 39 [2023-02-16 03:20:25,156 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 13 treesize of output 9 [2023-02-16 03:20:27,483 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:20:27,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 111 treesize of output 381 [2023-02-16 03:21:08,724 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 03:21:08,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122506335] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:08,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:08,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 33 [2023-02-16 03:21:08,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041938973] [2023-02-16 03:21:08,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:08,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-16 03:21:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-16 03:21:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=949, Unknown=10, NotChecked=0, Total=1122 [2023-02-16 03:21:08,728 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 34 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:09,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:21:09,507 INFO L93 Difference]: Finished difference Result 198 states and 222 transitions. [2023-02-16 03:21:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 03:21:09,508 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 34 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-16 03:21:09,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:21:09,512 INFO L225 Difference]: With dead ends: 198 [2023-02-16 03:21:09,512 INFO L226 Difference]: Without dead ends: 198 [2023-02-16 03:21:09,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=378, Invalid=1682, Unknown=10, NotChecked=0, Total=2070 [2023-02-16 03:21:09,521 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 478 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:21:09,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 594 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 03:21:09,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-16 03:21:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 122. [2023-02-16 03:21:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 121 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 03:21:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2023-02-16 03:21:09,523 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 29 [2023-02-16 03:21:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:21:09,523 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2023-02-16 03:21:09,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 34 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2023-02-16 03:21:09,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 03:21:09,524 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:21:09,524 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] [2023-02-16 03:21:09,529 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 03:21:09,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-16 03:21:09,725 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:21:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:21:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1881278552, now seen corresponding path program 1 times [2023-02-16 03:21:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:21:09,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277686225] [2023-02-16 03:21:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:21:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:10,104 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 03:21:10,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:21:10,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277686225] [2023-02-16 03:21:10,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277686225] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:21:10,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381255272] [2023-02-16 03:21:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:10,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:10,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:21:10,117 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 03:21:10,137 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 03:21:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:10,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-16 03:21:10,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:21:10,262 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 03:21:10,275 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:21:10,276 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 03:21:10,306 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 13 treesize of output 9 [2023-02-16 03:21:10,313 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 13 treesize of output 9 [2023-02-16 03:21:10,416 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:10,416 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 03:21:10,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:21:10,422 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 03:21:10,431 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:10,432 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 03:21:10,434 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 03:21:10,522 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:21:10,522 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2023-02-16 03:21:10,525 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:21:10,527 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:10,527 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 27 treesize of output 16 [2023-02-16 03:21:10,552 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 03:21:10,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:21:10,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:10,886 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 45 treesize of output 46 [2023-02-16 03:21:10,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:10,890 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 35 treesize of output 36 [2023-02-16 03:21:10,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:10,896 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 62 treesize of output 61 [2023-02-16 03:21:10,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:10,903 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 96 treesize of output 89 [2023-02-16 03:21:10,906 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 40 treesize of output 32 [2023-02-16 03:21:10,909 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 66 treesize of output 58 [2023-02-16 03:21:10,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:10,976 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 22 treesize of output 23 [2023-02-16 03:21:10,977 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:21:10,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:21:10,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:21:10,980 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2023-02-16 03:21:11,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:11,112 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 59 treesize of output 129 [2023-02-16 03:21:11,417 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 03:21:11,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381255272] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:11,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:11,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2023-02-16 03:21:11,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341614826] [2023-02-16 03:21:11,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:11,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-16 03:21:11,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:11,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-16 03:21:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1021, Unknown=8, NotChecked=0, Total=1190 [2023-02-16 03:21:11,419 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 35 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:21:12,372 INFO L93 Difference]: Finished difference Result 203 states and 227 transitions. [2023-02-16 03:21:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 03:21:12,372 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 35 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-16 03:21:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:21:12,373 INFO L225 Difference]: With dead ends: 203 [2023-02-16 03:21:12,373 INFO L226 Difference]: Without dead ends: 203 [2023-02-16 03:21:12,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=479, Invalid=2165, Unknown=8, NotChecked=0, Total=2652 [2023-02-16 03:21:12,374 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 516 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:21:12,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 638 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 03:21:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-02-16 03:21:12,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 121. [2023-02-16 03:21:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 106 states have (on average 1.320754716981132) internal successors, (140), 120 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 140 transitions. [2023-02-16 03:21:12,376 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 140 transitions. Word has length 29 [2023-02-16 03:21:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:21:12,376 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 140 transitions. [2023-02-16 03:21:12,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 35 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 140 transitions. [2023-02-16 03:21:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 03:21:12,377 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:21:12,377 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] [2023-02-16 03:21:12,390 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 03:21:12,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:12,582 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:21:12,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:21:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2114552260, now seen corresponding path program 1 times [2023-02-16 03:21:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:21:12,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088309019] [2023-02-16 03:21:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:12,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:21:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:12,774 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 03:21:12,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:21:12,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088309019] [2023-02-16 03:21:12,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088309019] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:21:12,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753253901] [2023-02-16 03:21:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:12,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:12,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:21:12,776 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 03:21:12,800 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 03:21:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:12,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-16 03:21:12,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:21:12,899 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 03:21:12,929 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:21:12,930 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 03:21:12,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:21:12,951 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 03:21:12,955 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 13 treesize of output 9 [2023-02-16 03:21:12,981 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 20 treesize of output 8 [2023-02-16 03:21:13,034 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 03:21:13,039 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 03:21:13,071 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 03:21:13,072 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 03:21:13,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:21:13,134 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_600 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_600) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2023-02-16 03:21:13,138 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_600 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_600) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2023-02-16 03:21:13,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:13,188 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 2 case distinctions, treesize of input 23 treesize of output 29 [2023-02-16 03:21:13,196 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-02-16 03:21:13,196 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 30 treesize of output 29 [2023-02-16 03:21:13,200 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 9 treesize of output 7 [2023-02-16 03:21:13,206 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:21:13,206 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 13 treesize of output 12 [2023-02-16 03:21:13,233 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 03:21:13,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753253901] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:13,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:13,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 26 [2023-02-16 03:21:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489303840] [2023-02-16 03:21:13,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:13,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 03:21:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 03:21:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=439, Unknown=9, NotChecked=90, Total=650 [2023-02-16 03:21:13,234 INFO L87 Difference]: Start difference. First operand 121 states and 140 transitions. Second operand has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 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 03:21:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:21:13,846 INFO L93 Difference]: Finished difference Result 216 states and 242 transitions. [2023-02-16 03:21:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 03:21:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 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 29 [2023-02-16 03:21:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:21:13,847 INFO L225 Difference]: With dead ends: 216 [2023-02-16 03:21:13,848 INFO L226 Difference]: Without dead ends: 216 [2023-02-16 03:21:13,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=248, Invalid=807, Unknown=9, NotChecked=126, Total=1190 [2023-02-16 03:21:13,848 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 306 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 38 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:21:13,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 657 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 825 Invalid, 9 Unknown, 369 Unchecked, 0.4s Time] [2023-02-16 03:21:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-02-16 03:21:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 121. [2023-02-16 03:21:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 106 states have (on average 1.3113207547169812) internal successors, (139), 120 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 03:21:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2023-02-16 03:21:13,851 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 29 [2023-02-16 03:21:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:21:13,851 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2023-02-16 03:21:13,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 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 03:21:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2023-02-16 03:21:13,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 03:21:13,852 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:21:13,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:21:13,856 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 03:21:14,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:14,057 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:21:14,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:21:14,057 INFO L85 PathProgramCache]: Analyzing trace with hash -904234728, now seen corresponding path program 2 times [2023-02-16 03:21:14,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:21:14,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910908765] [2023-02-16 03:21:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:14,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:21:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:14,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:21:14,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910908765] [2023-02-16 03:21:14,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910908765] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:21:14,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252134484] [2023-02-16 03:21:14,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:21:14,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:14,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:21:14,403 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 03:21:14,416 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 03:21:14,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:21:14,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:21:14,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-16 03:21:14,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:21:14,549 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:21:14,549 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 03:21:14,553 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 03:21:14,586 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 13 treesize of output 9 [2023-02-16 03:21:14,590 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 13 treesize of output 9 [2023-02-16 03:21:14,728 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:21:14,728 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 03:21:14,732 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 03:21:14,736 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 03:21:14,745 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:14,745 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 03:21:14,791 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:14,791 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 78 treesize of output 71 [2023-02-16 03:21:14,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2023-02-16 03:21:14,798 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 03:21:14,903 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 40 treesize of output 24 [2023-02-16 03:21:14,906 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 26 treesize of output 14 [2023-02-16 03:21:14,974 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 03:21:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:14,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:21:15,201 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 204 treesize of output 182 [2023-02-16 03:21:15,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:15,425 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 139 treesize of output 120 [2023-02-16 03:21:15,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:15,429 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 115 treesize of output 96 [2023-02-16 03:21:15,436 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:15,436 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 165 treesize of output 152 [2023-02-16 03:21:15,445 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:15,445 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 250 treesize of output 213 [2023-02-16 03:21:15,448 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 197 treesize of output 185 [2023-02-16 03:21:15,451 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 185 treesize of output 177 [2023-02-16 03:21:15,454 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 177 treesize of output 169 [2023-02-16 03:21:15,457 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 169 treesize of output 157 [2023-02-16 03:21:15,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:15,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-16 03:21:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:15,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252134484] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:15,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:15,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 40 [2023-02-16 03:21:15,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527322548] [2023-02-16 03:21:15,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:15,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-02-16 03:21:15,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:15,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-02-16 03:21:15,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1391, Unknown=3, NotChecked=0, Total=1560 [2023-02-16 03:21:15,726 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand has 40 states, 40 states have (on average 2.1) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:21:17,035 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2023-02-16 03:21:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-16 03:21:17,035 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-16 03:21:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:21:17,036 INFO L225 Difference]: With dead ends: 207 [2023-02-16 03:21:17,036 INFO L226 Difference]: Without dead ends: 207 [2023-02-16 03:21:17,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=399, Invalid=2568, Unknown=3, NotChecked=0, Total=2970 [2023-02-16 03:21:17,038 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 328 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:21:17,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1605 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-16 03:21:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-02-16 03:21:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 123. [2023-02-16 03:21:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 108 states have (on average 1.3055555555555556) internal successors, (141), 122 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2023-02-16 03:21:17,042 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 31 [2023-02-16 03:21:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:21:17,042 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2023-02-16 03:21:17,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2023-02-16 03:21:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 03:21:17,042 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:21:17,042 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, 1, 1] [2023-02-16 03:21:17,047 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 03:21:17,247 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,SelfDestructingSolverStorable20 [2023-02-16 03:21:17,247 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:21:17,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:21:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash 80993154, now seen corresponding path program 1 times [2023-02-16 03:21:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:21:17,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609843523] [2023-02-16 03:21:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:21:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:17,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:21:17,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609843523] [2023-02-16 03:21:17,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609843523] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:21:17,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717275253] [2023-02-16 03:21:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:17,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:17,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:21:17,698 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 03:21:17,700 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 03:21:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:17,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 57 conjunts are in the unsatisfiable core [2023-02-16 03:21:17,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:21:17,815 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:21:17,815 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 03:21:17,845 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 13 treesize of output 9 [2023-02-16 03:21:17,850 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 13 treesize of output 9 [2023-02-16 03:21:17,953 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:21:17,954 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 03:21:17,961 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 03:21:17,971 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:17,972 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 22 treesize of output 22 [2023-02-16 03:21:17,991 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 03:21:18,038 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:18,039 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 69 treesize of output 64 [2023-02-16 03:21:18,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2023-02-16 03:21:18,045 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 40 treesize of output 38 [2023-02-16 03:21:18,277 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:21:18,278 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2023-02-16 03:21:18,284 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:21:18,287 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:18,287 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 29 treesize of output 18 [2023-02-16 03:21:18,374 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 03:21:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:18,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:21:18,660 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 452 treesize of output 408 [2023-02-16 03:21:21,060 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:21,061 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 63 treesize of output 64 [2023-02-16 03:21:21,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:21,067 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 99 treesize of output 80 [2023-02-16 03:21:21,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:21,071 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 60 treesize of output 61 [2023-02-16 03:21:21,074 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 50 treesize of output 46 [2023-02-16 03:21:21,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:21,080 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 70 treesize of output 69 [2023-02-16 03:21:21,083 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 53 treesize of output 49 [2023-02-16 03:21:21,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:21,294 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 59 treesize of output 129 [2023-02-16 03:21:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:21,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717275253] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:21,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:21,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2023-02-16 03:21:21,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934049642] [2023-02-16 03:21:21,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:21,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-16 03:21:21,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-16 03:21:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1625, Unknown=3, NotChecked=0, Total=1806 [2023-02-16 03:21:21,453 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 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 03:21:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:21:22,652 INFO L93 Difference]: Finished difference Result 206 states and 226 transitions. [2023-02-16 03:21:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 03:21:22,654 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 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 33 [2023-02-16 03:21:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:21:22,655 INFO L225 Difference]: With dead ends: 206 [2023-02-16 03:21:22,655 INFO L226 Difference]: Without dead ends: 206 [2023-02-16 03:21:22,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=399, Invalid=2678, Unknown=3, NotChecked=0, Total=3080 [2023-02-16 03:21:22,656 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 545 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:21:22,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 739 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 03:21:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-02-16 03:21:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 127. [2023-02-16 03:21:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.3035714285714286) internal successors, (146), 126 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 03:21:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2023-02-16 03:21:22,658 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 33 [2023-02-16 03:21:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:21:22,659 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2023-02-16 03:21:22,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 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 03:21:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2023-02-16 03:21:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 03:21:22,659 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:21:22,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:21:22,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 03:21:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:22,865 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:21:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:21:22,865 INFO L85 PathProgramCache]: Analyzing trace with hash 81045709, now seen corresponding path program 2 times [2023-02-16 03:21:22,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:21:22,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499830558] [2023-02-16 03:21:22,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:22,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:21:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:23,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:21:23,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499830558] [2023-02-16 03:21:23,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499830558] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:21:23,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25391982] [2023-02-16 03:21:23,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:21:23,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:23,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:21:23,216 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:21:23,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 03:21:23,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:21:23,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:21:23,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-16 03:21:23,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:21:23,396 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:21:23,396 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 03:21:23,413 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 13 treesize of output 9 [2023-02-16 03:21:23,421 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 13 treesize of output 9 [2023-02-16 03:21:23,475 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 03:21:23,479 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 03:21:23,485 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 03:21:23,513 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:23,514 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 69 treesize of output 64 [2023-02-16 03:21:23,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2023-02-16 03:21:23,521 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 26 treesize of output 28 [2023-02-16 03:21:23,574 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 31 treesize of output 19 [2023-02-16 03:21:23,576 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 19 treesize of output 11 [2023-02-16 03:21:23,601 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 03:21:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:23,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:21:23,747 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 458 treesize of output 414 [2023-02-16 03:21:23,848 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_805 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_805) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|)) (forall ((v_ArrVal_802 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_802) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)) (or (forall ((v_ArrVal_805 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_805) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)))) (forall ((v_ArrVal_802 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_802) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)))))) is different from false [2023-02-16 03:21:23,882 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (or (forall ((v_ArrVal_805 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_805) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) (+ |c_ULTIMATE.start_main_#t~mem13#1.offset| 4)))) (forall ((v_ArrVal_802 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_802) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem13#1.base|)))) (forall ((v_ArrVal_802 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_802) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem13#1.base|)) (forall ((v_ArrVal_805 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_805) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem13#1.offset|)))) is different from false [2023-02-16 03:21:23,892 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse3)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse3))) (and (forall ((v_ArrVal_805 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_805) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) .cse2)) (or (forall ((v_ArrVal_805 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_805) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) (+ .cse2 4)))) (forall ((v_ArrVal_802 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_802) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) .cse0)))) (forall ((v_ArrVal_802 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_802) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) .cse0))))) is different from false [2023-02-16 03:21:23,897 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:23,897 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 22 treesize of output 23 [2023-02-16 03:21:23,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:23,902 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 36 treesize of output 35 [2023-02-16 03:21:23,903 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 7 treesize of output 3 [2023-02-16 03:21:23,913 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-16 03:21:23,913 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 23 treesize of output 13 [2023-02-16 03:21:23,914 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:21:23,915 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 10 treesize of output 4 [2023-02-16 03:21:23,920 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-16 03:21:23,920 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 25 treesize of output 1 [2023-02-16 03:21:23,923 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-16 03:21:23,923 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 22 treesize of output 1 [2023-02-16 03:21:24,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:24,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-16 03:21:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-02-16 03:21:24,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25391982] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:24,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:24,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-02-16 03:21:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082530488] [2023-02-16 03:21:24,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:24,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-16 03:21:24,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-16 03:21:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=697, Unknown=9, NotChecked=168, Total=992 [2023-02-16 03:21:24,083 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 03:21:24,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:21:24,673 INFO L93 Difference]: Finished difference Result 180 states and 198 transitions. [2023-02-16 03:21:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:21:24,676 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 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 33 [2023-02-16 03:21:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:21:24,678 INFO L225 Difference]: With dead ends: 180 [2023-02-16 03:21:24,678 INFO L226 Difference]: Without dead ends: 180 [2023-02-16 03:21:24,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 42 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=1233, Unknown=9, NotChecked=228, Total=1722 [2023-02-16 03:21:24,681 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 325 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 32 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 458 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:21:24,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 603 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 686 Invalid, 6 Unknown, 458 Unchecked, 0.3s Time] [2023-02-16 03:21:24,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-16 03:21:24,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 127. [2023-02-16 03:21:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 126 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2023-02-16 03:21:24,707 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 33 [2023-02-16 03:21:24,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:21:24,708 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2023-02-16 03:21:24,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 03:21:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2023-02-16 03:21:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 03:21:24,708 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:21:24,708 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, 1, 1] [2023-02-16 03:21:24,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-16 03:21:24,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-02-16 03:21:24,914 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:21:24,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:21:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1433810246, now seen corresponding path program 1 times [2023-02-16 03:21:24,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:21:24,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189610075] [2023-02-16 03:21:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:24,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:21:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:25,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:21:25,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189610075] [2023-02-16 03:21:25,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189610075] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:21:25,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840079744] [2023-02-16 03:21:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:25,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:25,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:21:25,329 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:21:25,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 03:21:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:25,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-16 03:21:25,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:21:25,497 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:21:25,498 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 03:21:25,523 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 13 treesize of output 9 [2023-02-16 03:21:25,528 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 13 treesize of output 9 [2023-02-16 03:21:25,619 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:25,619 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 22 treesize of output 22 [2023-02-16 03:21:25,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:21:25,623 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 21 [2023-02-16 03:21:25,628 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 03:21:25,658 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:25,658 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 69 treesize of output 64 [2023-02-16 03:21:25,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2023-02-16 03:21:25,664 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 40 treesize of output 38 [2023-02-16 03:21:25,748 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 31 treesize of output 19 [2023-02-16 03:21:25,750 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 33 treesize of output 17 [2023-02-16 03:21:25,808 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 03:21:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:25,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:21:26,002 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 199 treesize of output 177 [2023-02-16 03:21:26,171 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:26,171 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 45 treesize of output 46 [2023-02-16 03:21:26,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:26,177 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 82 treesize of output 63 [2023-02-16 03:21:26,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:26,180 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 43 treesize of output 44 [2023-02-16 03:21:26,182 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 33 treesize of output 29 [2023-02-16 03:21:26,187 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:26,187 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2023-02-16 03:21:26,189 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 37 treesize of output 33 [2023-02-16 03:21:26,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:26,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-16 03:21:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:26,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840079744] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:26,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:26,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 42 [2023-02-16 03:21:26,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804282705] [2023-02-16 03:21:26,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:26,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-16 03:21:26,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:26,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-16 03:21:26,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1537, Unknown=9, NotChecked=0, Total=1722 [2023-02-16 03:21:26,382 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 42 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 42 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:21:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:21:27,665 INFO L93 Difference]: Finished difference Result 213 states and 232 transitions. [2023-02-16 03:21:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 03:21:27,665 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 42 states have internal predecessors, (93), 0 states have call successors, (0), 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 33 [2023-02-16 03:21:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:21:27,668 INFO L225 Difference]: With dead ends: 213 [2023-02-16 03:21:27,668 INFO L226 Difference]: Without dead ends: 213 [2023-02-16 03:21:27,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=400, Invalid=2561, Unknown=9, NotChecked=0, Total=2970 [2023-02-16 03:21:27,672 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 544 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:21:27,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1267 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-16 03:21:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-02-16 03:21:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 129. [2023-02-16 03:21:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 128 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 03:21:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2023-02-16 03:21:27,691 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 33 [2023-02-16 03:21:27,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:21:27,691 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2023-02-16 03:21:27,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.2142857142857144) internal successors, (93), 42 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:21:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2023-02-16 03:21:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 03:21:27,692 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:21:27,692 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, 1, 1] [2023-02-16 03:21:27,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 03:21:27,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-02-16 03:21:27,897 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:21:27,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:21:27,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1433757691, now seen corresponding path program 1 times [2023-02-16 03:21:27,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:21:27,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253591020] [2023-02-16 03:21:27,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:27,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:21:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:28,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:21:28,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253591020] [2023-02-16 03:21:28,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253591020] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:21:28,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674398630] [2023-02-16 03:21:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:28,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:28,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:21:28,248 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:21:28,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 03:21:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:28,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-16 03:21:28,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:21:28,397 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 03:21:28,406 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:21:28,406 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 03:21:28,434 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 13 treesize of output 9 [2023-02-16 03:21:28,437 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 13 treesize of output 9 [2023-02-16 03:21:28,568 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:28,568 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 03:21:28,576 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 03:21:28,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:21:28,581 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 03:21:28,618 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:28,618 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 78 treesize of output 71 [2023-02-16 03:21:28,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2023-02-16 03:21:28,652 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 03:21:28,726 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 40 treesize of output 24 [2023-02-16 03:21:28,729 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 26 treesize of output 14 [2023-02-16 03:21:28,779 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 15 treesize of output 7 [2023-02-16 03:21:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:28,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:21:29,034 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 204 treesize of output 182 [2023-02-16 03:21:29,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:29,342 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 139 treesize of output 120 [2023-02-16 03:21:29,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:29,346 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 115 treesize of output 96 [2023-02-16 03:21:29,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:29,354 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 165 treesize of output 152 [2023-02-16 03:21:29,363 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:29,364 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 250 treesize of output 213 [2023-02-16 03:21:29,366 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 197 treesize of output 185 [2023-02-16 03:21:29,369 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 185 treesize of output 177 [2023-02-16 03:21:29,372 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 177 treesize of output 165 [2023-02-16 03:21:29,374 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 165 treesize of output 157 [2023-02-16 03:21:29,545 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:29,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-16 03:21:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:29,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674398630] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:29,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:29,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 40 [2023-02-16 03:21:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496448567] [2023-02-16 03:21:29,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:29,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-02-16 03:21:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-02-16 03:21:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1387, Unknown=6, NotChecked=0, Total=1560 [2023-02-16 03:21:29,661 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 40 states, 40 states have (on average 2.25) internal successors, (90), 40 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:21:30,982 INFO L93 Difference]: Finished difference Result 196 states and 217 transitions. [2023-02-16 03:21:30,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-16 03:21:30,983 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.25) internal successors, (90), 40 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-16 03:21:30,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:21:30,983 INFO L225 Difference]: With dead ends: 196 [2023-02-16 03:21:30,983 INFO L226 Difference]: Without dead ends: 196 [2023-02-16 03:21:30,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=382, Invalid=2474, Unknown=6, NotChecked=0, Total=2862 [2023-02-16 03:21:30,984 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 478 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:21:30,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1316 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-16 03:21:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-02-16 03:21:30,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 127. [2023-02-16 03:21:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 126 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2023-02-16 03:21:30,986 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 33 [2023-02-16 03:21:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:21:30,986 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2023-02-16 03:21:30,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.25) internal successors, (90), 40 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:21:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2023-02-16 03:21:30,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 03:21:30,987 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:21:30,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:21:30,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 03:21:31,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-02-16 03:21:31,188 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:21:31,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:21:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1588527464, now seen corresponding path program 2 times [2023-02-16 03:21:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:21:31,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280326619] [2023-02-16 03:21:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:31,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:21:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:31,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:21:31,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280326619] [2023-02-16 03:21:31,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280326619] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:21:31,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845387080] [2023-02-16 03:21:31,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:21:31,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:31,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:21:31,502 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:21:31,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 03:21:31,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:21:31,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:21:31,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-16 03:21:31,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:21:31,705 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:21:31,705 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 03:21:31,735 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 13 treesize of output 9 [2023-02-16 03:21:31,839 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:31,839 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 26 treesize of output 26 [2023-02-16 03:21:31,850 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:21:31,850 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 03:21:31,904 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-02-16 03:21:31,905 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 1 case distinctions, treesize of input 33 treesize of output 26 [2023-02-16 03:21:32,108 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:21:32,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 59 [2023-02-16 03:21:32,112 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 16 treesize of output 8 [2023-02-16 03:21:32,203 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:21:32,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 98 [2023-02-16 03:21:32,243 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 22 treesize of output 14 [2023-02-16 03:21:32,356 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:21:32,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:32,358 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 31 treesize of output 16 [2023-02-16 03:21:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:32,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:21:32,497 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1033 (Array Int Int))) (= 1 (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_1033) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2023-02-16 03:21:32,502 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1033 (Array Int Int))) (= 1 (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_1033) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2023-02-16 03:21:32,529 INFO L321 Elim1Store]: treesize reduction 5, result has 81.5 percent of original size [2023-02-16 03:21:32,530 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 31 treesize of output 30 [2023-02-16 03:21:32,630 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:32,630 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2023-02-16 03:21:32,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:32,761 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 29 treesize of output 30 [2023-02-16 03:21:32,768 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:32,768 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 164 treesize of output 157 [2023-02-16 03:21:32,771 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 142 treesize of output 126 [2023-02-16 03:21:32,777 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:32,777 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 136 treesize of output 108 [2023-02-16 03:21:32,785 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:21:32,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-02-16 03:21:32,970 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:32,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-16 03:21:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-16 03:21:33,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845387080] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:33,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:33,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 44 [2023-02-16 03:21:33,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981457835] [2023-02-16 03:21:33,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:33,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-16 03:21:33,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:33,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-16 03:21:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1542, Unknown=21, NotChecked=162, Total=1892 [2023-02-16 03:21:33,104 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 44 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 44 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 03:21:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:21:35,622 INFO L93 Difference]: Finished difference Result 258 states and 283 transitions. [2023-02-16 03:21:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-02-16 03:21:35,622 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 44 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) Word has length 36 [2023-02-16 03:21:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:21:35,623 INFO L225 Difference]: With dead ends: 258 [2023-02-16 03:21:35,623 INFO L226 Difference]: Without dead ends: 258 [2023-02-16 03:21:35,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=868, Invalid=4819, Unknown=21, NotChecked=298, Total=6006 [2023-02-16 03:21:35,624 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 669 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:21:35,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 906 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1461 Invalid, 0 Unknown, 318 Unchecked, 0.9s Time] [2023-02-16 03:21:35,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-02-16 03:21:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 141. [2023-02-16 03:21:35,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 140 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 03:21:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 161 transitions. [2023-02-16 03:21:35,626 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 161 transitions. Word has length 36 [2023-02-16 03:21:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:21:35,627 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 161 transitions. [2023-02-16 03:21:35,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 44 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 03:21:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 161 transitions. [2023-02-16 03:21:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 03:21:35,627 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:21:35,627 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1] [2023-02-16 03:21:35,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 03:21:35,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-02-16 03:21:35,832 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:21:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:21:35,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1746650192, now seen corresponding path program 1 times [2023-02-16 03:21:35,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:21:35,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183996803] [2023-02-16 03:21:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:35,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:21:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:36,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:21:36,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183996803] [2023-02-16 03:21:36,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183996803] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:21:36,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760050411] [2023-02-16 03:21:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:21:36,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:21:36,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:21:36,156 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:21:36,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-16 03:21:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:21:36,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-16 03:21:36,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:21:36,298 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:21:36,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 03:21:36,338 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 13 treesize of output 9 [2023-02-16 03:21:36,427 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:21:36,428 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 03:21:36,447 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-16 03:21:36,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-16 03:21:36,476 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 03:21:36,477 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 1 case distinctions, treesize of input 37 treesize of output 28 [2023-02-16 03:21:36,579 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-16 03:21:36,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 59 [2023-02-16 03:21:36,612 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-16 03:21:36,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 59 [2023-02-16 03:21:36,692 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:21:36,695 INFO L321 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2023-02-16 03:21:36,695 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 27 [2023-02-16 03:21:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:36,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:21:36,860 INFO L321 Elim1Store]: treesize reduction 5, result has 81.5 percent of original size [2023-02-16 03:21:36,860 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 31 treesize of output 30 [2023-02-16 03:21:36,964 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:36,964 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2023-02-16 03:21:37,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:37,163 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 29 treesize of output 30 [2023-02-16 03:21:37,170 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:37,170 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 86 treesize of output 85 [2023-02-16 03:21:37,174 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 70 treesize of output 62 [2023-02-16 03:21:37,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:37,179 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 72 treesize of output 56 [2023-02-16 03:21:37,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:21:37,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 95 treesize of output 365 [2023-02-16 03:21:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:21:52,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760050411] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:21:52,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:21:52,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 18] total 41 [2023-02-16 03:21:52,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290207431] [2023-02-16 03:21:52,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:21:52,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-16 03:21:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:21:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-16 03:21:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1496, Unknown=15, NotChecked=0, Total=1722 [2023-02-16 03:21:52,166 INFO L87 Difference]: Start difference. First operand 141 states and 161 transitions. Second operand has 42 states, 41 states have (on average 2.268292682926829) internal successors, (93), 42 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:21:54,258 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 [0] [2023-02-16 03:21:56,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:21:58,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:00,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:02,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:04,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:06,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:09,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:11,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:13,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:22,211 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 61 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:22:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:22:22,918 INFO L93 Difference]: Finished difference Result 274 states and 307 transitions. [2023-02-16 03:22:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-16 03:22:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.268292682926829) internal successors, (93), 42 states have internal predecessors, (93), 0 states have call successors, (0), 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 36 [2023-02-16 03:22:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:22:22,920 INFO L225 Difference]: With dead ends: 274 [2023-02-16 03:22:22,920 INFO L226 Difference]: Without dead ends: 274 [2023-02-16 03:22:22,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=595, Invalid=3050, Unknown=15, NotChecked=0, Total=3660 [2023-02-16 03:22:22,922 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 845 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 135 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:22:22,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1160 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1859 Invalid, 12 Unknown, 0 Unchecked, 22.0s Time] [2023-02-16 03:22:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-02-16 03:22:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 158. [2023-02-16 03:22:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 143 states have (on average 1.2727272727272727) internal successors, (182), 157 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:22:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 182 transitions. [2023-02-16 03:22:22,927 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 182 transitions. Word has length 36 [2023-02-16 03:22:22,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:22:22,928 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 182 transitions. [2023-02-16 03:22:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.268292682926829) internal successors, (93), 42 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:22:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 182 transitions. [2023-02-16 03:22:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 03:22:22,928 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:22:22,928 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1] [2023-02-16 03:22:22,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-16 03:22:23,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:22:23,134 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:22:23,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:22:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1746650191, now seen corresponding path program 1 times [2023-02-16 03:22:23,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:22:23,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615882970] [2023-02-16 03:22:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:22:23,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:22:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:22:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:23,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:22:23,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615882970] [2023-02-16 03:22:23,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615882970] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:22:23,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656005058] [2023-02-16 03:22:23,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:22:23,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:22:23,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:22:23,741 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:22:23,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-16 03:22:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:22:23,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-16 03:22:23,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:22:23,884 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:22:23,884 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 03:22:23,916 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 13 treesize of output 9 [2023-02-16 03:22:23,923 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 13 treesize of output 9 [2023-02-16 03:22:24,058 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:22:24,058 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 03:22:24,071 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:22:24,071 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 22 treesize of output 22 [2023-02-16 03:22:24,113 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:22:24,113 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 03:22:24,150 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 03:22:24,150 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 1 case distinctions, treesize of input 29 treesize of output 24 [2023-02-16 03:22:24,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 03:22:24,305 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:22:24,305 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 03:22:24,324 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:22:24,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2023-02-16 03:22:24,329 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 16 treesize of output 8 [2023-02-16 03:22:24,420 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:22:24,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 73 [2023-02-16 03:22:24,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:22:24,427 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 03:22:24,441 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 12 [2023-02-16 03:22:24,516 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 03:22:24,519 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 03:22:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:24,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:22:24,651 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_1222 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1222) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (forall ((v_ArrVal_1222 (Array Int Int)) (v_ArrVal_1221 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1222) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1221) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) is different from false [2023-02-16 03:22:24,674 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_1222 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_1222) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (forall ((v_ArrVal_1222 (Array Int Int)) (v_ArrVal_1221 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_1222) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_1221) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) is different from false [2023-02-16 03:22:24,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:24,786 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 63 treesize of output 67 [2023-02-16 03:22:24,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:24,974 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2023-02-16 03:22:25,374 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:25,374 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 109 treesize of output 100 [2023-02-16 03:22:25,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:25,381 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 89 treesize of output 90 [2023-02-16 03:22:25,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:25,391 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 146 treesize of output 145 [2023-02-16 03:22:25,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:25,409 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 368 treesize of output 349 [2023-02-16 03:22:25,415 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 333 treesize of output 317 [2023-02-16 03:22:25,430 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 317 treesize of output 309 [2023-02-16 03:22:25,436 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 309 treesize of output 301 [2023-02-16 03:22:25,440 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 301 treesize of output 285 [2023-02-16 03:22:25,450 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:25,450 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 285 treesize of output 270 [2023-02-16 03:22:25,460 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 261 treesize of output 253 [2023-02-16 03:22:25,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:25,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 260 treesize of output 300 [2023-02-16 03:22:25,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:25,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-16 03:22:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-02-16 03:22:26,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656005058] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:22:26,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:22:26,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 16] total 46 [2023-02-16 03:22:26,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460636289] [2023-02-16 03:22:26,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:22:26,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-16 03:22:26,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:22:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-16 03:22:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1754, Unknown=30, NotChecked=174, Total=2162 [2023-02-16 03:22:26,062 INFO L87 Difference]: Start difference. First operand 158 states and 182 transitions. Second operand has 47 states, 46 states have (on average 2.152173913043478) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:22:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:22:28,523 INFO L93 Difference]: Finished difference Result 279 states and 312 transitions. [2023-02-16 03:22:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-16 03:22:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.152173913043478) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 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 36 [2023-02-16 03:22:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:22:28,524 INFO L225 Difference]: With dead ends: 279 [2023-02-16 03:22:28,525 INFO L226 Difference]: Without dead ends: 279 [2023-02-16 03:22:28,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 71 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=709, Invalid=4232, Unknown=37, NotChecked=278, Total=5256 [2023-02-16 03:22:28,526 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 550 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 135 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:22:28,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 1225 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1807 Invalid, 4 Unknown, 364 Unchecked, 1.1s Time] [2023-02-16 03:22:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-02-16 03:22:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 157. [2023-02-16 03:22:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 142 states have (on average 1.267605633802817) internal successors, (180), 156 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 03:22:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2023-02-16 03:22:28,529 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 36 [2023-02-16 03:22:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:22:28,529 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2023-02-16 03:22:28,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.152173913043478) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:22:28,529 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2023-02-16 03:22:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 03:22:28,529 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:22:28,529 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:22:28,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-16 03:22:28,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-02-16 03:22:28,735 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:22:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:22:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1243533416, now seen corresponding path program 3 times [2023-02-16 03:22:28,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:22:28,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387845955] [2023-02-16 03:22:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:22:28,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:22:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:22:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:29,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:22:29,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387845955] [2023-02-16 03:22:29,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387845955] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:22:29,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525868183] [2023-02-16 03:22:29,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 03:22:29,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:22:29,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:22:29,108 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:22:29,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-16 03:22:29,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-16 03:22:29,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:22:29,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-16 03:22:29,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:22:29,267 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:22:29,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 03:22:29,300 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 13 treesize of output 9 [2023-02-16 03:22:29,349 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 03:22:29,387 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-02-16 03:22:29,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-02-16 03:22:29,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 03:22:29,584 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-16 03:22:29,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 59 [2023-02-16 03:22:29,609 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-16 03:22:29,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 59 [2023-02-16 03:22:29,688 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:22:29,689 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 57 treesize of output 24 [2023-02-16 03:22:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:29,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:22:31,776 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1314 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1314) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) 1)) is different from false [2023-02-16 03:22:31,780 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1314 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_1314) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) 1)) is different from false [2023-02-16 03:22:31,787 INFO L321 Elim1Store]: treesize reduction 5, result has 81.5 percent of original size [2023-02-16 03:22:31,787 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 31 treesize of output 30 [2023-02-16 03:22:31,852 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:31,852 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2023-02-16 03:22:31,962 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:31,963 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 29 treesize of output 30 [2023-02-16 03:22:31,970 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:31,970 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 164 treesize of output 157 [2023-02-16 03:22:31,973 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 142 treesize of output 126 [2023-02-16 03:22:31,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:31,979 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 136 treesize of output 108 [2023-02-16 03:22:32,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:32,293 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 62 treesize of output 216 [2023-02-16 03:22:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-16 03:22:33,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525868183] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:22:33,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:22:33,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 36 [2023-02-16 03:22:33,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402139041] [2023-02-16 03:22:33,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:22:33,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-16 03:22:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:22:33,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-16 03:22:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1036, Unknown=10, NotChecked=134, Total=1332 [2023-02-16 03:22:33,180 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 37 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:22:35,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:37,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:39,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:41,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:43,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:45,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:22:46,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:22:46,962 INFO L93 Difference]: Finished difference Result 291 states and 329 transitions. [2023-02-16 03:22:46,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-16 03:22:46,962 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 37 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-16 03:22:46,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:22:46,963 INFO L225 Difference]: With dead ends: 291 [2023-02-16 03:22:46,963 INFO L226 Difference]: Without dead ends: 291 [2023-02-16 03:22:46,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=482, Invalid=2704, Unknown=14, NotChecked=222, Total=3422 [2023-02-16 03:22:46,963 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 531 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 114 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:22:46,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1364 Invalid, 2778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2270 Invalid, 6 Unknown, 388 Unchecked, 13.2s Time] [2023-02-16 03:22:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-02-16 03:22:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 177. [2023-02-16 03:22:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 162 states have (on average 1.271604938271605) internal successors, (206), 176 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 03:22:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 206 transitions. [2023-02-16 03:22:46,966 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 206 transitions. Word has length 36 [2023-02-16 03:22:46,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:22:46,966 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 206 transitions. [2023-02-16 03:22:46,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 37 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:22:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 206 transitions. [2023-02-16 03:22:46,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 03:22:46,966 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:22:46,966 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:22:46,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-16 03:22:47,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-02-16 03:22:47,172 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:22:47,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:22:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1243533417, now seen corresponding path program 2 times [2023-02-16 03:22:47,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:22:47,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342167225] [2023-02-16 03:22:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:22:47,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:22:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:22:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:47,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:22:47,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342167225] [2023-02-16 03:22:47,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342167225] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:22:47,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932062751] [2023-02-16 03:22:47,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:22:47,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:22:47,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:22:47,701 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:22:47,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-16 03:22:47,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:22:47,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:22:47,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-16 03:22:47,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:22:47,882 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:22:47,883 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 03:22:47,929 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 13 treesize of output 9 [2023-02-16 03:22:47,936 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 13 treesize of output 9 [2023-02-16 03:22:48,052 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:22:48,053 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 22 treesize of output 22 [2023-02-16 03:22:48,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:22:48,061 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 03:22:48,096 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:22:48,097 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 03:22:48,146 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 03:22:48,146 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 1 case distinctions, treesize of input 29 treesize of output 24 [2023-02-16 03:22:48,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 03:22:48,358 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:22:48,358 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 03:22:48,379 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:22:48,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2023-02-16 03:22:48,385 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 16 treesize of output 8 [2023-02-16 03:22:48,475 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:22:48,475 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 03:22:48,494 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:22:48,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 73 [2023-02-16 03:22:48,525 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 03:22:48,614 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 03:22:48,616 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 03:22:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:48,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:22:48,864 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_1411 (Array Int Int)) (v_ArrVal_1410 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1410) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1411) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))) (forall ((v_ArrVal_1410 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1410) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) is different from false [2023-02-16 03:22:48,872 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_1411 (Array Int Int)) (v_ArrVal_1410 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1410) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1411) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))) (forall ((v_ArrVal_1410 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1410) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) is different from false [2023-02-16 03:22:48,880 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:48,880 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 63 treesize of output 67 [2023-02-16 03:22:49,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:49,176 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2023-02-16 03:22:49,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:49,538 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 109 treesize of output 100 [2023-02-16 03:22:49,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:49,543 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 89 treesize of output 90 [2023-02-16 03:22:49,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:49,552 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 224 treesize of output 217 [2023-02-16 03:22:49,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:49,564 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 370 treesize of output 357 [2023-02-16 03:22:49,568 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 341 treesize of output 333 [2023-02-16 03:22:49,571 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 333 treesize of output 317 [2023-02-16 03:22:49,579 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:49,580 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 317 treesize of output 290 [2023-02-16 03:22:49,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:49,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 288 treesize of output 328 [2023-02-16 03:22:49,611 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 275 treesize of output 267 [2023-02-16 03:22:49,616 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 267 treesize of output 263 [2023-02-16 03:22:49,621 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 263 treesize of output 247 [2023-02-16 03:22:50,084 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:50,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-16 03:22:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-16 03:22:50,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932062751] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:22:50,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:22:50,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 48 [2023-02-16 03:22:50,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546950561] [2023-02-16 03:22:50,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:22:50,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-16 03:22:50,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:22:50,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-16 03:22:50,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1892, Unknown=32, NotChecked=182, Total=2352 [2023-02-16 03:22:50,167 INFO L87 Difference]: Start difference. First operand 177 states and 206 transitions. Second operand has 49 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 49 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 03:22:52,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:22:52,270 INFO L93 Difference]: Finished difference Result 294 states and 332 transitions. [2023-02-16 03:22:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-16 03:22:52,271 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 49 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) Word has length 36 [2023-02-16 03:22:52,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:22:52,271 INFO L225 Difference]: With dead ends: 294 [2023-02-16 03:22:52,271 INFO L226 Difference]: Without dead ends: 294 [2023-02-16 03:22:52,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=750, Invalid=4193, Unknown=35, NotChecked=278, Total=5256 [2023-02-16 03:22:52,273 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 735 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 2359 mSolverCounterSat, 156 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2359 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 415 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:22:52,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1681 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2359 Invalid, 1 Unknown, 415 Unchecked, 1.2s Time] [2023-02-16 03:22:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-02-16 03:22:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 166. [2023-02-16 03:22:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 151 states have (on average 1.2649006622516556) internal successors, (191), 165 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 03:22:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2023-02-16 03:22:52,277 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 36 [2023-02-16 03:22:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:22:52,277 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2023-02-16 03:22:52,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 49 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 03:22:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2023-02-16 03:22:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 03:22:52,278 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:22:52,278 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:22:52,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-02-16 03:22:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:22:52,483 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:22:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:22:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1813872394, now seen corresponding path program 2 times [2023-02-16 03:22:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:22:52,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990572929] [2023-02-16 03:22:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:22:52,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:22:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:22:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:52,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:22:52,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990572929] [2023-02-16 03:22:52,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990572929] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:22:52,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770664252] [2023-02-16 03:22:52,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:22:52,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:22:52,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:22:52,831 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:22:52,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-16 03:22:52,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:22:52,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:22:52,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-16 03:22:52,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:22:53,004 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 03:22:53,034 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:22:53,034 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 03:22:53,067 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 13 treesize of output 9 [2023-02-16 03:22:53,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:22:53,072 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 03:22:53,098 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 20 treesize of output 8 [2023-02-16 03:22:53,156 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 03:22:53,168 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:22:53,168 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 03:22:53,195 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 13 treesize of output 9 [2023-02-16 03:22:53,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 03:22:53,223 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 20 treesize of output 8 [2023-02-16 03:22:53,275 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 03:22:53,280 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 03:22:53,319 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 03:22:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:53,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:22:53,368 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1507 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_1507) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2023-02-16 03:22:53,371 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1507 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_1507) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2023-02-16 03:22:53,516 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:22:53,516 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 13 treesize of output 12 [2023-02-16 03:22:53,634 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:53,635 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-02-16 03:22:53,647 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-02-16 03:22:53,648 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 117 [2023-02-16 03:22:53,652 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 53 treesize of output 49 [2023-02-16 03:22:53,656 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 102 treesize of output 94 [2023-02-16 03:22:53,665 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:22:53,665 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 13 treesize of output 12 [2023-02-16 03:22:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-16 03:22:53,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770664252] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:22:53,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:22:53,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 38 [2023-02-16 03:22:53,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185005989] [2023-02-16 03:22:53,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:22:53,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-16 03:22:53,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:22:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-16 03:22:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1058, Unknown=22, NotChecked=138, Total=1406 [2023-02-16 03:22:53,787 INFO L87 Difference]: Start difference. First operand 166 states and 191 transitions. Second operand has 38 states, 38 states have (on average 2.5789473684210527) internal successors, (98), 38 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 03:22:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:22:54,405 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2023-02-16 03:22:54,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 03:22:54,405 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.5789473684210527) internal successors, (98), 38 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-16 03:22:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:22:54,406 INFO L225 Difference]: With dead ends: 234 [2023-02-16 03:22:54,406 INFO L226 Difference]: Without dead ends: 234 [2023-02-16 03:22:54,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=378, Invalid=1678, Unknown=22, NotChecked=178, Total=2256 [2023-02-16 03:22:54,409 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 296 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:22:54,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 694 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 985 Invalid, 0 Unknown, 250 Unchecked, 0.4s Time] [2023-02-16 03:22:54,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-02-16 03:22:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 168. [2023-02-16 03:22:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 153 states have (on average 1.261437908496732) internal successors, (193), 167 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 03:22:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 193 transitions. [2023-02-16 03:22:54,434 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 193 transitions. Word has length 38 [2023-02-16 03:22:54,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:22:54,434 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 193 transitions. [2023-02-16 03:22:54,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.5789473684210527) internal successors, (98), 38 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 03:22:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 193 transitions. [2023-02-16 03:22:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 03:22:54,435 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:22:54,435 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:22:54,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-02-16 03:22:54,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:22:54,640 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:22:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:22:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1813924949, now seen corresponding path program 3 times [2023-02-16 03:22:54,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:22:54,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980752917] [2023-02-16 03:22:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:22:54,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:22:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:22:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:55,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:22:55,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980752917] [2023-02-16 03:22:55,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980752917] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:22:55,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351128787] [2023-02-16 03:22:55,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 03:22:55,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:22:55,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:22:55,009 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:22:55,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-16 03:22:55,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-16 03:22:55,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:22:55,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-16 03:22:55,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:22:55,235 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 13 treesize of output 9 [2023-02-16 03:22:55,239 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 13 treesize of output 9 [2023-02-16 03:22:55,264 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 03:22:55,335 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:22:55,335 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 03:22:55,338 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 03:22:55,379 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:22:55,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 03:22:55,435 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 03:22:55,444 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-02-16 03:22:55,444 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 1 case distinctions, treesize of input 25 treesize of output 28 [2023-02-16 03:22:55,707 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:22:55,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 95 [2023-02-16 03:22:55,746 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 25 treesize of output 13 [2023-02-16 03:22:55,799 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:22:55,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 95 [2023-02-16 03:22:55,819 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 29 treesize of output 17 [2023-02-16 03:22:55,901 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 03:22:55,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:22:55,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:22:56,050 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1601 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_1601) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) 1)) is different from false [2023-02-16 03:22:56,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:56,111 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2023-02-16 03:22:56,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:56,256 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 03:22:56,264 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:56,264 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 293 treesize of output 238 [2023-02-16 03:22:56,272 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:22:56,272 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 237 treesize of output 173 [2023-02-16 03:22:56,366 INFO L321 Elim1Store]: treesize reduction 13, result has 90.8 percent of original size [2023-02-16 03:22:56,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 257 treesize of output 346 [2023-02-16 03:22:56,371 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 258 treesize of output 206 [2023-02-16 03:22:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-02-16 03:22:58,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351128787] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:22:58,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:22:58,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2023-02-16 03:22:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748459827] [2023-02-16 03:22:58,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:22:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-16 03:22:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:22:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-16 03:22:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1566, Unknown=18, NotChecked=82, Total=1892 [2023-02-16 03:22:58,666 INFO L87 Difference]: Start difference. First operand 168 states and 193 transitions. Second operand has 44 states, 43 states have (on average 2.511627906976744) internal successors, (108), 44 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 03:23:08,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-16 03:23:10,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-16 03:23:12,496 WARN L539 Checker$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 03:23:14,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-16 03:23:18,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-16 03:23:19,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:23:19,567 INFO L93 Difference]: Finished difference Result 307 states and 342 transitions. [2023-02-16 03:23:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-02-16 03:23:19,567 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.511627906976744) internal successors, (108), 44 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) Word has length 38 [2023-02-16 03:23:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:23:19,568 INFO L225 Difference]: With dead ends: 307 [2023-02-16 03:23:19,568 INFO L226 Difference]: Without dead ends: 307 [2023-02-16 03:23:19,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1091, Invalid=5334, Unknown=59, NotChecked=158, Total=6642 [2023-02-16 03:23:19,569 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 596 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 120 mSolverCounterUnsat, 46 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 46 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:23:19,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 761 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1282 Invalid, 46 Unknown, 156 Unchecked, 11.7s Time] [2023-02-16 03:23:19,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-02-16 03:23:19,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 196. [2023-02-16 03:23:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 181 states have (on average 1.2486187845303867) internal successors, (226), 195 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 03:23:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 226 transitions. [2023-02-16 03:23:19,572 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 226 transitions. Word has length 38 [2023-02-16 03:23:19,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:23:19,572 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 226 transitions. [2023-02-16 03:23:19,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.511627906976744) internal successors, (108), 44 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 03:23:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 226 transitions. [2023-02-16 03:23:19,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 03:23:19,572 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:23:19,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:23:19,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-02-16 03:23:19,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:23:19,782 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:23:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:23:19,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1813924950, now seen corresponding path program 2 times [2023-02-16 03:23:19,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:23:19,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620753165] [2023-02-16 03:23:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:23:19,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:23:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:23:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:23:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:23:20,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620753165] [2023-02-16 03:23:20,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620753165] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:23:20,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998985361] [2023-02-16 03:23:20,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:23:20,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:23:20,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:23:20,323 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:23:20,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-16 03:23:20,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:23:20,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:23:20,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-16 03:23:20,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:23:20,541 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:23:20,542 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 03:23:20,575 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 13 treesize of output 9 [2023-02-16 03:23:20,579 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 13 treesize of output 9 [2023-02-16 03:23:20,689 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:23:20,689 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 22 treesize of output 22 [2023-02-16 03:23:20,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:23:20,696 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 03:23:20,728 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:23:20,728 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 03:23:20,779 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 03:23:20,780 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 1 case distinctions, treesize of input 29 treesize of output 24 [2023-02-16 03:23:20,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 03:23:20,956 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:23:20,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2023-02-16 03:23:20,963 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 16 treesize of output 8 [2023-02-16 03:23:20,986 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:23:20,987 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 03:23:21,070 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:23:21,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 73 [2023-02-16 03:23:21,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:23:21,075 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 03:23:21,091 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 03:23:21,183 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 03:23:21,184 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 03:23:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:23:21,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:23:21,370 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_1698 (Array Int Int)) (v_ArrVal_1697 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1697) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1698) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))) (forall ((v_ArrVal_1697 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1697) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) is different from false [2023-02-16 03:23:21,394 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_1697 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_1697) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (forall ((v_ArrVal_1698 (Array Int Int)) (v_ArrVal_1697 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_1697) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13#1.base| v_ArrVal_1698) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) is different from false [2023-02-16 03:23:21,400 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_1697 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1697) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (forall ((v_ArrVal_1698 (Array Int Int)) (v_ArrVal_1697 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1697) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1698) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))))) is different from false [2023-02-16 03:23:21,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:21,408 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 63 treesize of output 67 [2023-02-16 03:23:21,430 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_prenex_47 (Array Int Int)) (v_prenex_46 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_47) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_46) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (forall ((v_ArrVal_1698 (Array Int Int))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1698) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (forall ((v_ArrVal_1697 (Array Int Int)) (v_ArrVal_1692 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1692) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1697) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 5))))) is different from false [2023-02-16 03:23:21,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:21,510 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2023-02-16 03:23:21,795 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:21,795 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 109 treesize of output 100 [2023-02-16 03:23:21,800 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:21,800 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 89 treesize of output 90 [2023-02-16 03:23:21,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:21,808 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 318 treesize of output 299 [2023-02-16 03:23:21,812 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 283 treesize of output 275 [2023-02-16 03:23:21,815 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 275 treesize of output 267 [2023-02-16 03:23:21,818 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 267 treesize of output 251 [2023-02-16 03:23:21,828 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:21,828 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 318 treesize of output 317 [2023-02-16 03:23:21,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:21,837 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 301 treesize of output 286 [2023-02-16 03:23:21,840 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 277 treesize of output 269 [2023-02-16 03:23:21,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:21,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 276 treesize of output 316 [2023-02-16 03:23:21,870 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 263 treesize of output 247 [2023-02-16 03:23:22,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:22,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2023-02-16 03:23:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2023-02-16 03:23:22,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998985361] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:23:22,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:23:22,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 17] total 47 [2023-02-16 03:23:22,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912376970] [2023-02-16 03:23:22,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:23:22,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-16 03:23:22,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:23:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-16 03:23:22,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1669, Unknown=13, NotChecked=348, Total=2256 [2023-02-16 03:23:22,539 INFO L87 Difference]: Start difference. First operand 196 states and 226 transitions. Second operand has 48 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 03:23:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:23:24,450 INFO L93 Difference]: Finished difference Result 280 states and 313 transitions. [2023-02-16 03:23:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-16 03:23:24,450 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-16 03:23:24,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:23:24,456 INFO L225 Difference]: With dead ends: 280 [2023-02-16 03:23:24,456 INFO L226 Difference]: Without dead ends: 280 [2023-02-16 03:23:24,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=676, Invalid=3749, Unknown=13, NotChecked=532, Total=4970 [2023-02-16 03:23:24,477 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 461 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 97 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 593 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:23:24,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1012 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1452 Invalid, 2 Unknown, 593 Unchecked, 0.9s Time] [2023-02-16 03:23:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-02-16 03:23:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 205. [2023-02-16 03:23:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 190 states have (on average 1.236842105263158) internal successors, (235), 204 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 03:23:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2023-02-16 03:23:24,483 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 38 [2023-02-16 03:23:24,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:23:24,484 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2023-02-16 03:23:24,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 03:23:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2023-02-16 03:23:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 03:23:24,484 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:23:24,484 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1] [2023-02-16 03:23:24,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-16 03:23:24,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-02-16 03:23:24,690 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:23:24,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:23:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash 753747794, now seen corresponding path program 1 times [2023-02-16 03:23:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:23:24,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601680882] [2023-02-16 03:23:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:23:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:23:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:23:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:23:25,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:23:25,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601680882] [2023-02-16 03:23:25,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601680882] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:23:25,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556702715] [2023-02-16 03:23:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:23:25,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:23:25,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:23:25,031 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:23:25,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-16 03:23:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:23:25,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-16 03:23:25,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:23:25,197 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 03:23:25,223 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:23:25,223 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 03:23:25,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:23:25,252 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 03:23:25,256 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 13 treesize of output 9 [2023-02-16 03:23:25,287 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 20 treesize of output 8 [2023-02-16 03:23:25,358 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 03:23:25,367 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:23:25,367 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 03:23:25,396 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 03:23:25,400 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 13 treesize of output 9 [2023-02-16 03:23:25,424 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 20 treesize of output 8 [2023-02-16 03:23:25,474 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 03:23:25,480 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 03:23:25,514 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 03:23:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:23:25,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:23:25,530 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1794 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1794) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2023-02-16 03:23:25,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:25,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 89 [2023-02-16 03:23:25,920 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 96 treesize of output 92 [2023-02-16 03:23:25,941 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:25,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 139 [2023-02-16 03:23:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-02-16 03:23:26,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556702715] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:23:26,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:23:26,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 36 [2023-02-16 03:23:26,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567979883] [2023-02-16 03:23:26,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:23:26,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-16 03:23:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:23:26,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-16 03:23:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1013, Unknown=8, NotChecked=66, Total=1260 [2023-02-16 03:23:26,150 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand has 36 states, 36 states have (on average 2.611111111111111) internal successors, (94), 36 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 03:23:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:23:27,026 INFO L93 Difference]: Finished difference Result 265 states and 295 transitions. [2023-02-16 03:23:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:23:27,026 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.611111111111111) internal successors, (94), 36 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) Word has length 38 [2023-02-16 03:23:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:23:27,027 INFO L225 Difference]: With dead ends: 265 [2023-02-16 03:23:27,027 INFO L226 Difference]: Without dead ends: 265 [2023-02-16 03:23:27,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=374, Invalid=1692, Unknown=8, NotChecked=88, Total=2162 [2023-02-16 03:23:27,028 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 251 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:23:27,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 885 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1284 Invalid, 0 Unknown, 169 Unchecked, 0.6s Time] [2023-02-16 03:23:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-02-16 03:23:27,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 207. [2023-02-16 03:23:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 192 states have (on average 1.2291666666666667) internal successors, (236), 206 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 03:23:27,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2023-02-16 03:23:27,030 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 38 [2023-02-16 03:23:27,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:23:27,030 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2023-02-16 03:23:27,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.611111111111111) internal successors, (94), 36 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 03:23:27,030 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2023-02-16 03:23:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 03:23:27,030 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:23:27,031 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:23:27,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-16 03:23:27,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-02-16 03:23:27,236 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:23:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:23:27,237 INFO L85 PathProgramCache]: Analyzing trace with hash -991775253, now seen corresponding path program 1 times [2023-02-16 03:23:27,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:23:27,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859493057] [2023-02-16 03:23:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:23:27,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:23:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:23:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:23:27,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:23:27,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859493057] [2023-02-16 03:23:27,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859493057] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:23:27,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232146808] [2023-02-16 03:23:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:23:27,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:23:27,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:23:27,490 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:23:27,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-16 03:23:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:23:27,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-16 03:23:27,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:23:27,665 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:23:27,665 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 03:23:27,701 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 13 treesize of output 9 [2023-02-16 03:23:27,803 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:23:27,818 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 36 treesize of output 34 [2023-02-16 03:23:27,845 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:23:27,846 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 33 treesize of output 34 [2023-02-16 03:23:27,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:27,956 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 30 treesize of output 20 [2023-02-16 03:23:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 03:23:27,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:23:28,218 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:28,218 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 23 treesize of output 24 [2023-02-16 03:23:28,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:28,222 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 39 treesize of output 38 [2023-02-16 03:23:28,224 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 22 treesize of output 18 [2023-02-16 03:23:28,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:28,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 95 [2023-02-16 03:23:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 03:23:28,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232146808] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:23:28,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:23:28,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2023-02-16 03:23:28,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337903473] [2023-02-16 03:23:28,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:23:28,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-16 03:23:28,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:23:28,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-16 03:23:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=778, Unknown=15, NotChecked=0, Total=930 [2023-02-16 03:23:28,395 INFO L87 Difference]: Start difference. First operand 207 states and 236 transitions. Second operand has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 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 03:23:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:23:28,975 INFO L93 Difference]: Finished difference Result 246 states and 274 transitions. [2023-02-16 03:23:28,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-16 03:23:28,975 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 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) Word has length 39 [2023-02-16 03:23:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:23:28,976 INFO L225 Difference]: With dead ends: 246 [2023-02-16 03:23:28,976 INFO L226 Difference]: Without dead ends: 246 [2023-02-16 03:23:28,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=284, Invalid=1261, Unknown=15, NotChecked=0, Total=1560 [2023-02-16 03:23:28,977 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 408 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:23:28,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 701 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 03:23:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-16 03:23:28,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 214. [2023-02-16 03:23:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 199 states have (on average 1.221105527638191) internal successors, (243), 213 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 03:23:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 243 transitions. [2023-02-16 03:23:28,980 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 243 transitions. Word has length 39 [2023-02-16 03:23:28,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:23:28,980 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 243 transitions. [2023-02-16 03:23:28,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 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 03:23:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 243 transitions. [2023-02-16 03:23:28,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 03:23:28,980 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:23:28,980 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:23:28,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-02-16 03:23:29,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:23:29,186 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:23:29,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:23:29,187 INFO L85 PathProgramCache]: Analyzing trace with hash 310795043, now seen corresponding path program 1 times [2023-02-16 03:23:29,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:23:29,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253143610] [2023-02-16 03:23:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:23:29,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:23:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:23:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:23:29,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:23:29,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253143610] [2023-02-16 03:23:29,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253143610] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:23:29,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380658022] [2023-02-16 03:23:29,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:23:29,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:23:29,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:23:29,465 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:23:29,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-16 03:23:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:23:29,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-16 03:23:29,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:23:29,624 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:23:29,624 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 03:23:29,644 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 13 treesize of output 9 [2023-02-16 03:23:29,708 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:23:29,709 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 03:23:29,718 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:23:29,718 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 03:23:29,767 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:29,768 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 26 treesize of output 20 [2023-02-16 03:23:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 03:23:29,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:23:29,833 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1918 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1918) |c_ULTIMATE.start_main_~a~0#1.base|) 4)))) is different from false [2023-02-16 03:23:29,845 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1918 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1918) |c_ULTIMATE.start_main_~a~0#1.base|) 4)))) is different from false [2023-02-16 03:23:29,848 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1918 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_1918) |c_ULTIMATE.start_main_~a~0#1.base|) 4)))) is different from false [2023-02-16 03:23:29,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:29,851 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 21 treesize of output 22 [2023-02-16 03:23:29,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:29,864 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 35 treesize of output 36 [2023-02-16 03:23:29,866 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 18 [2023-02-16 03:23:29,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:29,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 60 [2023-02-16 03:23:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 3 not checked. [2023-02-16 03:23:29,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380658022] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:23:29,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:23:29,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2023-02-16 03:23:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981498396] [2023-02-16 03:23:29,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:23:29,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-16 03:23:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:23:29,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-16 03:23:29,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=552, Unknown=3, NotChecked=150, Total=812 [2023-02-16 03:23:29,963 INFO L87 Difference]: Start difference. First operand 214 states and 243 transitions. Second operand has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 03:23:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:23:30,520 INFO L93 Difference]: Finished difference Result 251 states and 279 transitions. [2023-02-16 03:23:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-16 03:23:30,521 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 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 39 [2023-02-16 03:23:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:23:30,522 INFO L225 Difference]: With dead ends: 251 [2023-02-16 03:23:30,522 INFO L226 Difference]: Without dead ends: 251 [2023-02-16 03:23:30,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=965, Unknown=3, NotChecked=204, Total=1406 [2023-02-16 03:23:30,522 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 329 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 437 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:23:30,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 875 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1005 Invalid, 0 Unknown, 437 Unchecked, 0.4s Time] [2023-02-16 03:23:30,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-02-16 03:23:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2023-02-16 03:23:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 195 states have (on average 1.2256410256410257) internal successors, (239), 209 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 03:23:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2023-02-16 03:23:30,532 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 39 [2023-02-16 03:23:30,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:23:30,533 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2023-02-16 03:23:30,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 03:23:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2023-02-16 03:23:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-16 03:23:30,541 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:23:30,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2023-02-16 03:23:30,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-02-16 03:23:30,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:23:30,746 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-02-16 03:23:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:23:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1327698726, now seen corresponding path program 2 times [2023-02-16 03:23:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:23:30,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797986732] [2023-02-16 03:23:30,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:23:30,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:23:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:23:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:23:31,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:23:31,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797986732] [2023-02-16 03:23:31,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797986732] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:23:31,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636645331] [2023-02-16 03:23:31,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:23:31,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:23:31,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:23:31,273 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:23:31,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-16 03:23:31,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:23:31,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:23:31,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 86 conjunts are in the unsatisfiable core [2023-02-16 03:23:31,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:23:31,468 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:23:31,469 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 03:23:31,475 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 03:23:31,508 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 13 treesize of output 9 [2023-02-16 03:23:31,514 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 13 treesize of output 9 [2023-02-16 03:23:31,670 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 03:23:31,683 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:23:31,683 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 03:23:31,687 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 03:23:31,699 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:23:31,699 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 03:23:31,766 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-16 03:23:31,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2023-02-16 03:23:31,784 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:23:31,784 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 03:23:31,861 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 03:23:31,873 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 03:23:31,873 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 1 case distinctions, treesize of input 38 treesize of output 29 [2023-02-16 03:23:31,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:23:31,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:23:32,127 INFO L321 Elim1Store]: treesize reduction 33, result has 48.4 percent of original size [2023-02-16 03:23:32,127 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 1 case distinctions, treesize of input 27 treesize of output 42 [2023-02-16 03:23:32,148 INFO L321 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2023-02-16 03:23:32,148 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 2 case distinctions, treesize of input 133 treesize of output 126 [2023-02-16 03:23:32,167 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:23:32,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 114 [2023-02-16 03:23:32,173 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 37 treesize of output 13 [2023-02-16 03:23:32,192 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 23 treesize of output 7 [2023-02-16 03:23:32,286 INFO L321 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2023-02-16 03:23:32,287 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 2 case distinctions, treesize of input 155 treesize of output 148 [2023-02-16 03:23:32,307 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:23:32,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 170 treesize of output 154 [2023-02-16 03:23:32,329 INFO L321 Elim1Store]: treesize reduction 55, result has 37.5 percent of original size [2023-02-16 03:23:32,330 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 2 case distinctions, treesize of input 52 treesize of output 72 [2023-02-16 03:23:32,385 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 03:23:32,401 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 27 treesize of output 11 [2023-02-16 03:23:32,667 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-02-16 03:23:32,667 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 206 treesize of output 127 [2023-02-16 03:23:32,670 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 79 [2023-02-16 03:23:32,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:32,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 55 [2023-02-16 03:23:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:23:32,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:23:33,643 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:33,644 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 123 [2023-02-16 03:23:33,658 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 402332 treesize of output 391836 [2023-02-16 03:23:33,689 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:33,689 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 391914 treesize of output 352242 [2023-02-16 03:23:58,304 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,305 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 942 treesize of output 833 [2023-02-16 03:23:58,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,314 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 822 treesize of output 693 [2023-02-16 03:23:58,332 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,333 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 2762 treesize of output 1861 [2023-02-16 03:23:58,395 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,396 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 5706 treesize of output 5483 [2023-02-16 03:23:58,422 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,423 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 5467 treesize of output 5072 [2023-02-16 03:23:58,432 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 5063 treesize of output 4983 [2023-02-16 03:23:58,442 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 4983 treesize of output 4887 [2023-02-16 03:23:58,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,469 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 4887 treesize of output 4852 [2023-02-16 03:23:58,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 4850 treesize of output 5022 [2023-02-16 03:23:58,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,595 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 4890 treesize of output 4646 [2023-02-16 03:23:58,622 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,623 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 4654 treesize of output 4466 [2023-02-16 03:23:58,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,651 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 4474 treesize of output 4214 [2023-02-16 03:23:58,663 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 4161 treesize of output 4113 [2023-02-16 03:23:58,674 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 4113 treesize of output 4065 [2023-02-16 03:23:58,685 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 4065 treesize of output 4017 [2023-02-16 03:23:58,696 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 4017 treesize of output 3977 [2023-02-16 03:23:58,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,724 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 3977 treesize of output 3962 [2023-02-16 03:23:58,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,753 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 4014 treesize of output 3618 [2023-02-16 03:23:58,764 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 3569 treesize of output 3489 [2023-02-16 03:23:58,775 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 3489 treesize of output 3401 [2023-02-16 03:23:58,825 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,826 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 3401 treesize of output 3362 [2023-02-16 03:23:58,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,856 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 3353 treesize of output 3338 [2023-02-16 03:23:58,868 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 3329 treesize of output 3289 [2023-02-16 03:23:58,879 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 3289 treesize of output 3257 [2023-02-16 03:23:58,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:23:58,910 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 3257 treesize of output 3238