./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-rb-sentinel-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 b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:18:21,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:18:21,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:18:21,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:18:21,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:18:21,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:18:21,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:18:21,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:18:21,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:18:21,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:18:21,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:18:21,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:18:21,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:18:21,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:18:21,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:18:21,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:18:21,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:18:21,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:18:21,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:18:21,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:18:21,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:18:21,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:18:21,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:18:21,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:18:21,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:18:21,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:18:21,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:18:21,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:18:21,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:18:21,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:18:21,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:18:21,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:18:21,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:18:21,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:18:21,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:18:21,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:18:21,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:18:21,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:18:21,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:18:21,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:18:21,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:18:21,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 22:18:21,521 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:18:21,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:18:21,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:18:21,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:18:21,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:18:21,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:18:21,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:18:21,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:18:21,523 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:18:21,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:18:21,524 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:18:21,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:18:21,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:18:21,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:18:21,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:18:21,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:18:21,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:18:21,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:18:21,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:18:21,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:18:21,526 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:18:21,526 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:18:21,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:18:21,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:18:21,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:18:21,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:18:21,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:18:21,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:18:21,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 22:18:21,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 22:18:21,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:18:21,528 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:18:21,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:18:21,528 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:18:21,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2023-02-15 22:18:21,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:18:21,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:18:21,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:18:21,730 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:18:21,730 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:18:21,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2023-02-15 22:18:22,816 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:18:23,001 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:18:23,001 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2023-02-15 22:18:23,008 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb29eb654/1697929c8e4b4c058ee206c69dfe499b/FLAGcb8b361d4 [2023-02-15 22:18:23,018 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb29eb654/1697929c8e4b4c058ee206c69dfe499b [2023-02-15 22:18:23,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:18:23,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:18:23,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:18:23,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:18:23,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:18:23,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610c5b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23, skipping insertion in model container [2023-02-15 22:18:23,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:18:23,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:18:23,292 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2023-02-15 22:18:23,296 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2023-02-15 22:18:23,297 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2023-02-15 22:18:23,298 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2023-02-15 22:18:23,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:18:23,312 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 22:18:23,341 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2023-02-15 22:18:23,343 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2023-02-15 22:18:23,344 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2023-02-15 22:18:23,345 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2023-02-15 22:18:23,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:18:23,369 INFO L208 MainTranslator]: Completed translation [2023-02-15 22:18:23,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23 WrapperNode [2023-02-15 22:18:23,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:18:23,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 22:18:23,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 22:18:23,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 22:18:23,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,419 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2023-02-15 22:18:23,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 22:18:23,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 22:18:23,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 22:18:23,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 22:18:23,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,451 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 22:18:23,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 22:18:23,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 22:18:23,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 22:18:23,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (1/1) ... [2023-02-15 22:18:23,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:18:23,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:23,490 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) [2023-02-15 22:18:23,495 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 [2023-02-15 22:18:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 22:18:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 22:18:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 22:18:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 22:18:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 22:18:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 22:18:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 22:18:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 22:18:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 22:18:23,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 22:18:23,591 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 22:18:23,592 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 22:18:23,882 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 22:18:23,889 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 22:18:23,889 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2023-02-15 22:18:23,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:18:23 BoogieIcfgContainer [2023-02-15 22:18:23,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 22:18:23,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 22:18:23,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 22:18:23,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 22:18:23,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:18:23" (1/3) ... [2023-02-15 22:18:23,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ab7ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:18:23, skipping insertion in model container [2023-02-15 22:18:23,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:18:23" (2/3) ... [2023-02-15 22:18:23,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ab7ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:18:23, skipping insertion in model container [2023-02-15 22:18:23,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:18:23" (3/3) ... [2023-02-15 22:18:23,900 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2023-02-15 22:18:23,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 22:18:23,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2023-02-15 22:18:23,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 22:18:23,981 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;@79204b8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 22:18:23,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-02-15 22:18:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 132 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 22:18:23,988 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:23,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 22:18:23,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-15 22:18:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:23,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623047555] [2023-02-15 22:18:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:23,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:24,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:24,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623047555] [2023-02-15 22:18:24,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623047555] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:24,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:24,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:18:24,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670266632] [2023-02-15 22:18:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:18:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:18:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:24,152 INFO L87 Difference]: Start difference. First operand has 133 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 132 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:24,283 INFO L93 Difference]: Finished difference Result 161 states and 168 transitions. [2023-02-15 22:18:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:18:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-15 22:18:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:24,291 INFO L225 Difference]: With dead ends: 161 [2023-02-15 22:18:24,291 INFO L226 Difference]: Without dead ends: 159 [2023-02-15 22:18:24,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:24,294 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 114 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:24,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 100 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-02-15 22:18:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2023-02-15 22:18:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.9054054054054055) internal successors, (141), 132 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) [2023-02-15 22:18:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2023-02-15 22:18:24,319 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 3 [2023-02-15 22:18:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:24,319 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2023-02-15 22:18:24,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2023-02-15 22:18:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 22:18:24,320 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:24,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 22:18:24,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 22:18:24,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-15 22:18:24,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:24,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879429513] [2023-02-15 22:18:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:24,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:24,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:24,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879429513] [2023-02-15 22:18:24,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879429513] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:24,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:24,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:18:24,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15506504] [2023-02-15 22:18:24,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:24,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:18:24,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:24,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:18:24,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:24,379 INFO L87 Difference]: Start difference. First operand 133 states and 141 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:24,434 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2023-02-15 22:18:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:18:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-15 22:18:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:24,436 INFO L225 Difference]: With dead ends: 130 [2023-02-15 22:18:24,436 INFO L226 Difference]: Without dead ends: 130 [2023-02-15 22:18:24,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:24,437 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:24,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 73 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:18:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-15 22:18:24,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-02-15 22:18:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 129 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2023-02-15 22:18:24,443 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 3 [2023-02-15 22:18:24,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:24,443 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2023-02-15 22:18:24,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,444 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2023-02-15 22:18:24,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 22:18:24,444 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:24,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 22:18:24,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 22:18:24,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:24,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:24,445 INFO L85 PathProgramCache]: Analyzing trace with hash 889446152, now seen corresponding path program 1 times [2023-02-15 22:18:24,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:24,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668769871] [2023-02-15 22:18:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:24,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:24,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668769871] [2023-02-15 22:18:24,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668769871] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:24,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:24,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:18:24,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180311824] [2023-02-15 22:18:24,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:24,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:18:24,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:18:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:24,502 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:24,566 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2023-02-15 22:18:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:18:24,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-02-15 22:18:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:24,567 INFO L225 Difference]: With dead ends: 127 [2023-02-15 22:18:24,567 INFO L226 Difference]: Without dead ends: 127 [2023-02-15 22:18:24,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:24,569 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 102 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:24,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 82 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-15 22:18:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-02-15 22:18:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 75 states have (on average 1.7733333333333334) internal successors, (133), 124 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2023-02-15 22:18:24,574 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 6 [2023-02-15 22:18:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:24,574 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2023-02-15 22:18:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2023-02-15 22:18:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 22:18:24,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:24,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 22:18:24,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 22:18:24,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2023-02-15 22:18:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:24,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137106262] [2023-02-15 22:18:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:24,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:24,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137106262] [2023-02-15 22:18:24,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137106262] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:24,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:24,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:18:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514995794] [2023-02-15 22:18:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:18:24,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:18:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:24,640 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:24,720 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2023-02-15 22:18:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:18:24,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-02-15 22:18:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:24,723 INFO L225 Difference]: With dead ends: 143 [2023-02-15 22:18:24,723 INFO L226 Difference]: Without dead ends: 143 [2023-02-15 22:18:24,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:24,728 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 101 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:24,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 91 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-02-15 22:18:24,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 130. [2023-02-15 22:18:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 82 states have (on average 1.6829268292682926) internal successors, (138), 129 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) [2023-02-15 22:18:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2023-02-15 22:18:24,743 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 6 [2023-02-15 22:18:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:24,743 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2023-02-15 22:18:24,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2023-02-15 22:18:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 22:18:24,744 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:24,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 22:18:24,745 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash 171980525, now seen corresponding path program 1 times [2023-02-15 22:18:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:24,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111023720] [2023-02-15 22:18:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:24,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:24,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:24,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111023720] [2023-02-15 22:18:24,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111023720] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:24,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:24,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:18:24,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966588868] [2023-02-15 22:18:24,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:24,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:18:24,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:24,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:18:24,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:18:24,940 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:25,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:25,076 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2023-02-15 22:18:25,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:18:25,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-15 22:18:25,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:25,079 INFO L225 Difference]: With dead ends: 134 [2023-02-15 22:18:25,080 INFO L226 Difference]: Without dead ends: 134 [2023-02-15 22:18:25,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:18:25,083 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 162 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:25,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 74 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-02-15 22:18:25,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 121. [2023-02-15 22:18:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 84 states have (on average 1.5595238095238095) internal successors, (131), 120 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2023-02-15 22:18:25,091 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 11 [2023-02-15 22:18:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:25,092 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2023-02-15 22:18:25,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2023-02-15 22:18:25,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 22:18:25,093 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:25,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:25,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 22:18:25,093 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:25,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash 171980526, now seen corresponding path program 1 times [2023-02-15 22:18:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:25,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640636992] [2023-02-15 22:18:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:25,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:25,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:25,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640636992] [2023-02-15 22:18:25,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640636992] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:25,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:25,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:18:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990297712] [2023-02-15 22:18:25,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:25,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:18:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:18:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:18:25,245 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:25,399 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2023-02-15 22:18:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 22:18:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-15 22:18:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:25,400 INFO L225 Difference]: With dead ends: 154 [2023-02-15 22:18:25,400 INFO L226 Difference]: Without dead ends: 154 [2023-02-15 22:18:25,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-15 22:18:25,401 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 186 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:25,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 124 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:25,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-15 22:18:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 128. [2023-02-15 22:18:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 127 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) [2023-02-15 22:18:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2023-02-15 22:18:25,405 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 11 [2023-02-15 22:18:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:25,405 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2023-02-15 22:18:25,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2023-02-15 22:18:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 22:18:25,406 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:25,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:25,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 22:18:25,406 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2064509497, now seen corresponding path program 1 times [2023-02-15 22:18:25,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:25,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792851366] [2023-02-15 22:18:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:25,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:25,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792851366] [2023-02-15 22:18:25,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792851366] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:25,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:25,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:18:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523198440] [2023-02-15 22:18:25,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:25,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:18:25,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:25,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:18:25,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:18:25,447 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:25,553 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2023-02-15 22:18:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:18:25,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-15 22:18:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:25,555 INFO L225 Difference]: With dead ends: 167 [2023-02-15 22:18:25,555 INFO L226 Difference]: Without dead ends: 167 [2023-02-15 22:18:25,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:18:25,556 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 237 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:25,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 129 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-02-15 22:18:25,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2023-02-15 22:18:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 128 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) [2023-02-15 22:18:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2023-02-15 22:18:25,560 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 13 [2023-02-15 22:18:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:25,560 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2023-02-15 22:18:25,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2023-02-15 22:18:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 22:18:25,561 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:25,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:25,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 22:18:25,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:25,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash -264176465, now seen corresponding path program 1 times [2023-02-15 22:18:25,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:25,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846419217] [2023-02-15 22:18:25,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:25,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:25,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:25,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846419217] [2023-02-15 22:18:25,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846419217] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:25,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:25,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:18:25,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474587565] [2023-02-15 22:18:25,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:25,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:18:25,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:25,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:18:25,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:18:25,688 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:25,814 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2023-02-15 22:18:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:18:25,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-02-15 22:18:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:25,815 INFO L225 Difference]: With dead ends: 129 [2023-02-15 22:18:25,815 INFO L226 Difference]: Without dead ends: 129 [2023-02-15 22:18:25,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 22:18:25,816 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 47 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:25,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 264 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:25,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-15 22:18:25,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2023-02-15 22:18:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.4787234042553192) internal successors, (139), 127 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) [2023-02-15 22:18:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2023-02-15 22:18:25,821 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 15 [2023-02-15 22:18:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:25,821 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2023-02-15 22:18:25,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2023-02-15 22:18:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 22:18:25,822 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:25,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:25,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 22:18:25,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:25,823 INFO L85 PathProgramCache]: Analyzing trace with hash -264176464, now seen corresponding path program 1 times [2023-02-15 22:18:25,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:25,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311758223] [2023-02-15 22:18:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:25,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:25,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:25,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311758223] [2023-02-15 22:18:25,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311758223] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:25,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:25,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:18:25,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363830462] [2023-02-15 22:18:25,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:25,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:18:25,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:25,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:18:25,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:18:25,987 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:26,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:26,147 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2023-02-15 22:18:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 22:18:26,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-02-15 22:18:26,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:26,149 INFO L225 Difference]: With dead ends: 130 [2023-02-15 22:18:26,149 INFO L226 Difference]: Without dead ends: 130 [2023-02-15 22:18:26,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-02-15 22:18:26,150 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 18 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:26,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 307 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-15 22:18:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 123. [2023-02-15 22:18:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 94 states have (on average 1.425531914893617) internal successors, (134), 122 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2023-02-15 22:18:26,153 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 15 [2023-02-15 22:18:26,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:26,154 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2023-02-15 22:18:26,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2023-02-15 22:18:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 22:18:26,155 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:26,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:26,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 22:18:26,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:26,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:26,156 INFO L85 PathProgramCache]: Analyzing trace with hash -125261441, now seen corresponding path program 1 times [2023-02-15 22:18:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:26,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723676654] [2023-02-15 22:18:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:26,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:26,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:26,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723676654] [2023-02-15 22:18:26,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723676654] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:26,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:26,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 22:18:26,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812983062] [2023-02-15 22:18:26,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:26,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 22:18:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:26,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 22:18:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:18:26,336 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:26,490 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2023-02-15 22:18:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:18:26,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 22:18:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:26,491 INFO L225 Difference]: With dead ends: 184 [2023-02-15 22:18:26,491 INFO L226 Difference]: Without dead ends: 184 [2023-02-15 22:18:26,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-02-15 22:18:26,492 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 396 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:26,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 214 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:26,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-02-15 22:18:26,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 130. [2023-02-15 22:18:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 129 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) [2023-02-15 22:18:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2023-02-15 22:18:26,495 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 16 [2023-02-15 22:18:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:26,495 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2023-02-15 22:18:26,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2023-02-15 22:18:26,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 22:18:26,496 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:26,496 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:26,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 22:18:26,497 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:26,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:26,497 INFO L85 PathProgramCache]: Analyzing trace with hash -926362969, now seen corresponding path program 1 times [2023-02-15 22:18:26,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:26,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970773343] [2023-02-15 22:18:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:26,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:26,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:26,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970773343] [2023-02-15 22:18:26,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970773343] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:18:26,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145150403] [2023-02-15 22:18:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:26,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:26,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:26,615 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) [2023-02-15 22:18:26,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 22:18:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:26,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 22:18:26,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:18:26,756 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 [2023-02-15 22:18:26,760 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 [2023-02-15 22:18:26,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:18:26,787 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 [2023-02-15 22:18:26,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:18:26,792 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 [2023-02-15 22:18:26,886 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 [2023-02-15 22:18:26,888 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 [2023-02-15 22:18:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:26,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:18:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:26,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145150403] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:18:26,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:18:26,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 12 [2023-02-15 22:18:26,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875277192] [2023-02-15 22:18:26,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:18:26,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 22:18:26,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 22:18:26,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-15 22:18:26,974 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:27,190 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2023-02-15 22:18:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 22:18:27,191 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-15 22:18:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:27,192 INFO L225 Difference]: With dead ends: 181 [2023-02-15 22:18:27,192 INFO L226 Difference]: Without dead ends: 181 [2023-02-15 22:18:27,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-02-15 22:18:27,192 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 322 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:27,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 260 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:18:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-15 22:18:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 137. [2023-02-15 22:18:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 136 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2023-02-15 22:18:27,195 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 23 [2023-02-15 22:18:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:27,196 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2023-02-15 22:18:27,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:27,196 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2023-02-15 22:18:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 22:18:27,197 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:27,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:27,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 22:18:27,403 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,SelfDestructingSolverStorable10 [2023-02-15 22:18:27,403 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:27,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash -968381222, now seen corresponding path program 1 times [2023-02-15 22:18:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:27,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929861718] [2023-02-15 22:18:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:27,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929861718] [2023-02-15 22:18:27,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929861718] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:27,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:27,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:18:27,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113607586] [2023-02-15 22:18:27,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:27,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:18:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:18:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:18:27,487 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:27,562 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2023-02-15 22:18:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:18:27,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-15 22:18:27,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:27,563 INFO L225 Difference]: With dead ends: 141 [2023-02-15 22:18:27,563 INFO L226 Difference]: Without dead ends: 141 [2023-02-15 22:18:27,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:18:27,563 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 10 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:27,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 288 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-15 22:18:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2023-02-15 22:18:27,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 135 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2023-02-15 22:18:27,566 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 23 [2023-02-15 22:18:27,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:27,566 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2023-02-15 22:18:27,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2023-02-15 22:18:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 22:18:27,566 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:27,566 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] [2023-02-15 22:18:27,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-15 22:18:27,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:27,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1747136957, now seen corresponding path program 1 times [2023-02-15 22:18:27,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:27,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723325638] [2023-02-15 22:18:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:27,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723325638] [2023-02-15 22:18:27,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723325638] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:27,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:27,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:18:27,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621140789] [2023-02-15 22:18:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:27,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:18:27,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:18:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:18:27,657 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:27,796 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2023-02-15 22:18:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:18:27,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 22:18:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:27,797 INFO L225 Difference]: With dead ends: 136 [2023-02-15 22:18:27,797 INFO L226 Difference]: Without dead ends: 136 [2023-02-15 22:18:27,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 22:18:27,798 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 41 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:27,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 261 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-15 22:18:27,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2023-02-15 22:18:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 134 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) [2023-02-15 22:18:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2023-02-15 22:18:27,800 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 24 [2023-02-15 22:18:27,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:27,800 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2023-02-15 22:18:27,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:27,800 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2023-02-15 22:18:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 22:18:27,800 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:27,801 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] [2023-02-15 22:18:27,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-15 22:18:27,801 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:27,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:27,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1747136958, now seen corresponding path program 1 times [2023-02-15 22:18:27,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:27,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081899909] [2023-02-15 22:18:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:27,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:27,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081899909] [2023-02-15 22:18:27,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081899909] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:27,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:27,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:18:27,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441922328] [2023-02-15 22:18:27,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:18:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:18:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:18:27,950 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:28,060 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2023-02-15 22:18:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:18:28,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 22:18:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:28,061 INFO L225 Difference]: With dead ends: 133 [2023-02-15 22:18:28,061 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 22:18:28,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:18:28,061 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 9 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:28,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 315 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:18:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 22:18:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2023-02-15 22:18:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.3333333333333333) internal successors, (136), 125 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) [2023-02-15 22:18:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2023-02-15 22:18:28,064 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 24 [2023-02-15 22:18:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:28,064 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2023-02-15 22:18:28,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2023-02-15 22:18:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 22:18:28,064 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:28,064 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:28,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-15 22:18:28,064 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:28,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:28,065 INFO L85 PathProgramCache]: Analyzing trace with hash 59031534, now seen corresponding path program 1 times [2023-02-15 22:18:28,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:28,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958889395] [2023-02-15 22:18:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:28,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:28,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:28,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958889395] [2023-02-15 22:18:28,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958889395] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:18:28,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101215585] [2023-02-15 22:18:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:28,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:28,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:28,456 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) [2023-02-15 22:18:28,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 22:18:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:28,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-15 22:18:28,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:18:28,542 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 [2023-02-15 22:18:28,558 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 [2023-02-15 22:18:28,605 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 22:18:28,605 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 [2023-02-15 22:18:28,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:18:28,631 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 [2023-02-15 22:18:28,638 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 [2023-02-15 22:18:28,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-15 22:18:28,699 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 16 treesize of output 18 [2023-02-15 22:18:28,716 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 16 treesize of output 18 [2023-02-15 22:18:28,749 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 [2023-02-15 22:18:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:28,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:18:28,790 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2023-02-15 22:18:28,924 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_528 Int) (|v_ULTIMATE.start_main_~end~0#1.offset_56| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_6| Int) (v_ArrVal_533 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_56| |c_ULTIMATE.start_main_~list~0#1.offset|)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_56| v_ArrVal_528)) |v_ULTIMATE.start_main_#t~malloc4#1.base_6| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_6|))))) is different from false [2023-02-15 22:18:28,932 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:18:28,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:28,935 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 25 treesize of output 31 [2023-02-15 22:18:28,939 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 36 treesize of output 24 [2023-02-15 22:18:28,942 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 [2023-02-15 22:18:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:28,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101215585] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:18:28,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:18:28,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 32 [2023-02-15 22:18:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800612212] [2023-02-15 22:18:28,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:18:28,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 22:18:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 22:18:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=724, Unknown=5, NotChecked=114, Total=992 [2023-02-15 22:18:28,956 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 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) [2023-02-15 22:18:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:30,064 INFO L93 Difference]: Finished difference Result 297 states and 319 transitions. [2023-02-15 22:18:30,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-15 22:18:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 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 26 [2023-02-15 22:18:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:30,066 INFO L225 Difference]: With dead ends: 297 [2023-02-15 22:18:30,066 INFO L226 Difference]: Without dead ends: 297 [2023-02-15 22:18:30,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=507, Invalid=1653, Unknown=10, NotChecked=182, Total=2352 [2023-02-15 22:18:30,067 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 500 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 65 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:30,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 649 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1058 Invalid, 17 Unknown, 292 Unchecked, 0.6s Time] [2023-02-15 22:18:30,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-02-15 22:18:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 141. [2023-02-15 22:18:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 117 states have (on average 1.3076923076923077) internal successors, (153), 140 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2023-02-15 22:18:30,070 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 26 [2023-02-15 22:18:30,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:30,070 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2023-02-15 22:18:30,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 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) [2023-02-15 22:18:30,070 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2023-02-15 22:18:30,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 22:18:30,071 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:30,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:30,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 22:18:30,277 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,SelfDestructingSolverStorable14 [2023-02-15 22:18:30,278 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash 500584872, now seen corresponding path program 1 times [2023-02-15 22:18:30,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:30,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67667272] [2023-02-15 22:18:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:30,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 22:18:30,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:30,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67667272] [2023-02-15 22:18:30,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67667272] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:30,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:30,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:18:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044005896] [2023-02-15 22:18:30,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:30,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:18:30,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:18:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:30,302 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:30,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:30,325 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2023-02-15 22:18:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:18:30,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-15 22:18:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:30,326 INFO L225 Difference]: With dead ends: 142 [2023-02-15 22:18:30,326 INFO L226 Difference]: Without dead ends: 142 [2023-02-15 22:18:30,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:30,327 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:30,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 101 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:18:30,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-02-15 22:18:30,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-02-15 22:18:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 118 states have (on average 1.2966101694915255) internal successors, (153), 141 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2023-02-15 22:18:30,330 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 29 [2023-02-15 22:18:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:30,330 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2023-02-15 22:18:30,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:30,330 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2023-02-15 22:18:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 22:18:30,330 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:30,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:30,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-15 22:18:30,331 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:30,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:30,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1324652277, now seen corresponding path program 1 times [2023-02-15 22:18:30,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:30,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472209913] [2023-02-15 22:18:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:30,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:30,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472209913] [2023-02-15 22:18:30,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472209913] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:18:30,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355738038] [2023-02-15 22:18:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:30,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:30,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:30,421 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) [2023-02-15 22:18:30,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 22:18:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:30,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 22:18:30,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:18:30,498 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 [2023-02-15 22:18:30,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-02-15 22:18:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 22:18:30,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:18:30,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355738038] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:30,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 22:18:30,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2023-02-15 22:18:30,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721387228] [2023-02-15 22:18:30,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:30,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:18:30,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:30,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:18:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 22:18:30,530 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:30,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:30,584 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2023-02-15 22:18:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:18:30,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-15 22:18:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:30,585 INFO L225 Difference]: With dead ends: 151 [2023-02-15 22:18:30,585 INFO L226 Difference]: Without dead ends: 151 [2023-02-15 22:18:30,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-15 22:18:30,585 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 7 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:30,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 216 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:18:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-15 22:18:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2023-02-15 22:18:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 121 states have (on average 1.2892561983471074) internal successors, (156), 144 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2023-02-15 22:18:30,588 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 31 [2023-02-15 22:18:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:30,588 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2023-02-15 22:18:30,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2023-02-15 22:18:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 22:18:30,589 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:30,589 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:30,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 22:18:30,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:30,794 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash 797716084, now seen corresponding path program 1 times [2023-02-15 22:18:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:30,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302306322] [2023-02-15 22:18:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:30,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:30,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:30,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302306322] [2023-02-15 22:18:30,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302306322] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:18:30,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686552699] [2023-02-15 22:18:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:30,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:30,985 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) [2023-02-15 22:18:30,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 22:18:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:31,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 22:18:31,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:18:31,092 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 [2023-02-15 22:18:31,095 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 [2023-02-15 22:18:31,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 22:18:31,132 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 [2023-02-15 22:18:31,243 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 [2023-02-15 22:18:31,246 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 [2023-02-15 22:18:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 22:18:31,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:18:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 22:18:31,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686552699] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:18:31,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:18:31,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 14 [2023-02-15 22:18:31,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182693403] [2023-02-15 22:18:31,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:18:31,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 22:18:31,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 22:18:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-15 22:18:31,380 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:31,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:31,764 INFO L93 Difference]: Finished difference Result 200 states and 214 transitions. [2023-02-15 22:18:31,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 22:18:31,765 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 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 32 [2023-02-15 22:18:31,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:31,765 INFO L225 Difference]: With dead ends: 200 [2023-02-15 22:18:31,765 INFO L226 Difference]: Without dead ends: 200 [2023-02-15 22:18:31,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-02-15 22:18:31,766 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 257 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:31,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 465 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 22:18:31,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-02-15 22:18:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 156. [2023-02-15 22:18:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 132 states have (on average 1.2803030303030303) internal successors, (169), 155 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2023-02-15 22:18:31,768 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 32 [2023-02-15 22:18:31,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:31,768 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2023-02-15 22:18:31,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2023-02-15 22:18:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 22:18:31,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:31,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:31,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 22:18:31,969 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,SelfDestructingSolverStorable17 [2023-02-15 22:18:31,969 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1040605566, now seen corresponding path program 1 times [2023-02-15 22:18:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:31,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098484368] [2023-02-15 22:18:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:31,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 22:18:32,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:32,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098484368] [2023-02-15 22:18:32,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098484368] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:18:32,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:18:32,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:18:32,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508446662] [2023-02-15 22:18:32,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:18:32,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:18:32,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:32,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:18:32,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:32,013 INFO L87 Difference]: Start difference. First operand 156 states and 169 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:32,031 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2023-02-15 22:18:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:18:32,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 [2023-02-15 22:18:32,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:32,045 INFO L225 Difference]: With dead ends: 155 [2023-02-15 22:18:32,045 INFO L226 Difference]: Without dead ends: 155 [2023-02-15 22:18:32,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:18:32,045 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:32,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:18:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-15 22:18:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-02-15 22:18:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 132 states have (on average 1.2651515151515151) internal successors, (167), 154 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 167 transitions. [2023-02-15 22:18:32,048 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 167 transitions. Word has length 33 [2023-02-15 22:18:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:32,048 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 167 transitions. [2023-02-15 22:18:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 167 transitions. [2023-02-15 22:18:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 22:18:32,048 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:32,048 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:32,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-15 22:18:32,048 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:32,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash 248148312, now seen corresponding path program 1 times [2023-02-15 22:18:32,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:32,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572393427] [2023-02-15 22:18:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:32,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:32,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:32,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572393427] [2023-02-15 22:18:32,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572393427] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:18:32,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129352789] [2023-02-15 22:18:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:32,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:32,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:32,270 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) [2023-02-15 22:18:32,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 22:18:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:32,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 22:18:32,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:18:32,361 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 [2023-02-15 22:18:32,418 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 22:18:32,419 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 [2023-02-15 22:18:32,450 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 [2023-02-15 22:18:32,542 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:18:32,542 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 [2023-02-15 22:18:32,578 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:18:32,578 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 [2023-02-15 22:18:32,699 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 [2023-02-15 22:18:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:32,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:18:32,792 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_818 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_818) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) 1)) is different from false [2023-02-15 22:18:32,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:32,831 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 20 treesize of output 21 [2023-02-15 22:18:32,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:32,836 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 34 treesize of output 37 [2023-02-15 22:18:32,849 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 5 [2023-02-15 22:18:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:37,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129352789] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:18:37,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:18:37,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-02-15 22:18:37,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242149524] [2023-02-15 22:18:37,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:18:37,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-15 22:18:37,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-15 22:18:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=4, NotChecked=52, Total=812 [2023-02-15 22:18:37,009 INFO L87 Difference]: Start difference. First operand 155 states and 167 transitions. Second operand has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:37,770 INFO L93 Difference]: Finished difference Result 268 states and 290 transitions. [2023-02-15 22:18:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-15 22:18:37,770 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-15 22:18:37,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:37,771 INFO L225 Difference]: With dead ends: 268 [2023-02-15 22:18:37,771 INFO L226 Difference]: Without dead ends: 268 [2023-02-15 22:18:37,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=262, Invalid=1069, Unknown=5, NotChecked=70, Total=1406 [2023-02-15 22:18:37,772 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 499 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:37,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 649 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1354 Invalid, 0 Unknown, 169 Unchecked, 0.6s Time] [2023-02-15 22:18:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-02-15 22:18:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 178. [2023-02-15 22:18:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 155 states have (on average 1.2516129032258065) internal successors, (194), 177 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2023-02-15 22:18:37,775 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 33 [2023-02-15 22:18:37,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:37,775 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2023-02-15 22:18:37,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:37,775 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2023-02-15 22:18:37,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 22:18:37,776 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:37,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:37,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 22:18:37,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:37,981 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:37,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:37,981 INFO L85 PathProgramCache]: Analyzing trace with hash 248148313, now seen corresponding path program 1 times [2023-02-15 22:18:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:37,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302269219] [2023-02-15 22:18:37,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:37,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:38,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:38,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302269219] [2023-02-15 22:18:38,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302269219] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:18:38,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193435040] [2023-02-15 22:18:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:38,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:38,280 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) [2023-02-15 22:18:38,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 22:18:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:38,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-15 22:18:38,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:18:38,379 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 [2023-02-15 22:18:38,425 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 [2023-02-15 22:18:38,436 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 22:18:38,437 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 [2023-02-15 22:18:38,464 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 [2023-02-15 22:18:38,471 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 [2023-02-15 22:18:38,588 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 22:18:38,588 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 [2023-02-15 22:18:38,591 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 [2023-02-15 22:18:38,598 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:18:38,598 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 [2023-02-15 22:18:38,648 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:18:38,649 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 [2023-02-15 22:18:38,652 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 18 treesize of output 20 [2023-02-15 22:18:38,760 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 [2023-02-15 22:18:38,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 22:18:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:38,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:18:38,930 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_923 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))) (forall ((v_ArrVal_924 (Array Int Int)) (v_ArrVal_923 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_924) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2023-02-15 22:18:38,954 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_923 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))) (forall ((v_ArrVal_924 (Array Int Int)) (v_ArrVal_923 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_924) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2023-02-15 22:18:38,960 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (forall ((v_ArrVal_924 (Array Int Int)) (v_ArrVal_923 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_924) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_923 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))))) is different from false [2023-02-15 22:18:38,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:38,969 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 20 treesize of output 21 [2023-02-15 22:18:38,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:38,974 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 34 treesize of output 37 [2023-02-15 22:18:38,983 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 5 [2023-02-15 22:18:38,987 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:38,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2023-02-15 22:18:38,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:38,992 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 29 treesize of output 30 [2023-02-15 22:18:38,994 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:18:38,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-02-15 22:18:38,997 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:18:38,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-02-15 22:18:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:39,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193435040] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:18:39,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:18:39,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-02-15 22:18:39,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080200210] [2023-02-15 22:18:39,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:18:39,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 22:18:39,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:39,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 22:18:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=720, Unknown=3, NotChecked=168, Total=992 [2023-02-15 22:18:39,085 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:40,134 INFO L93 Difference]: Finished difference Result 244 states and 264 transitions. [2023-02-15 22:18:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 22:18:40,135 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 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 [2023-02-15 22:18:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:40,136 INFO L225 Difference]: With dead ends: 244 [2023-02-15 22:18:40,136 INFO L226 Difference]: Without dead ends: 244 [2023-02-15 22:18:40,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=370, Invalid=1709, Unknown=3, NotChecked=270, Total=2352 [2023-02-15 22:18:40,137 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 560 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 419 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:40,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 630 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1194 Invalid, 0 Unknown, 419 Unchecked, 0.5s Time] [2023-02-15 22:18:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-02-15 22:18:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 181. [2023-02-15 22:18:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 158 states have (on average 1.2468354430379747) internal successors, (197), 180 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2023-02-15 22:18:40,139 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 33 [2023-02-15 22:18:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:40,139 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2023-02-15 22:18:40,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:40,140 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2023-02-15 22:18:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 22:18:40,140 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:40,140 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:40,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 22:18:40,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:40,345 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1639111831, now seen corresponding path program 1 times [2023-02-15 22:18:40,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:40,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952799706] [2023-02-15 22:18:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:40,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:41,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:41,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952799706] [2023-02-15 22:18:41,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952799706] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:18:41,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051112732] [2023-02-15 22:18:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:41,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:41,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:41,018 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) [2023-02-15 22:18:41,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 22:18:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:41,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-15 22:18:41,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:18:41,128 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 [2023-02-15 22:18:41,143 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 [2023-02-15 22:18:41,192 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 22:18:41,192 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 [2023-02-15 22:18:41,223 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 [2023-02-15 22:18:41,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:18:41,230 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 [2023-02-15 22:18:41,281 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 16 treesize of output 8 [2023-02-15 22:18:41,328 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 16 treesize of output 18 [2023-02-15 22:18:41,347 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 16 treesize of output 18 [2023-02-15 22:18:41,360 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 22:18:41,360 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 [2023-02-15 22:18:41,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:18:41,398 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 16 treesize of output 18 [2023-02-15 22:18:41,424 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 16 treesize of output 8 [2023-02-15 22:18:41,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-15 22:18:41,467 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 16 treesize of output 18 [2023-02-15 22:18:41,508 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 [2023-02-15 22:18:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:41,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:18:41,570 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1074 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1074) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2023-02-15 22:18:41,760 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 22:18:41,760 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 [2023-02-15 22:18:41,877 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_72| Int) (v_ArrVal_1067 Int) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_12| Int) (v_ArrVal_1074 (Array Int Int)) (v_ArrVal_1072 (Array Int Int))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_12|))) (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_72| |c_ULTIMATE.start_main_~list~0#1.offset|)) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_72| v_ArrVal_1067)) |v_ULTIMATE.start_main_#t~malloc4#1.base_12| v_ArrVal_1072) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_1074) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK))) is different from false [2023-02-15 22:18:41,886 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:18:41,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:41,890 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 28 treesize of output 34 [2023-02-15 22:18:41,893 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:18:41,894 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 36 treesize of output 24 [2023-02-15 22:18:41,895 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 [2023-02-15 22:18:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:41,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051112732] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:18:41,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:18:41,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 45 [2023-02-15 22:18:41,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224977473] [2023-02-15 22:18:41,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:18:41,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-02-15 22:18:41,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-02-15 22:18:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1541, Unknown=10, NotChecked=166, Total=1980 [2023-02-15 22:18:41,918 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:42,926 INFO L93 Difference]: Finished difference Result 261 states and 283 transitions. [2023-02-15 22:18:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 22:18:42,928 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2023-02-15 22:18:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:42,929 INFO L225 Difference]: With dead ends: 261 [2023-02-15 22:18:42,929 INFO L226 Difference]: Without dead ends: 261 [2023-02-15 22:18:42,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=584, Invalid=2606, Unknown=10, NotChecked=222, Total=3422 [2023-02-15 22:18:42,930 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 328 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 68 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:42,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 601 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1361 Invalid, 1 Unknown, 222 Unchecked, 0.6s Time] [2023-02-15 22:18:42,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-02-15 22:18:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 191. [2023-02-15 22:18:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 168 states have (on average 1.2380952380952381) internal successors, (208), 190 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 208 transitions. [2023-02-15 22:18:42,933 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 208 transitions. Word has length 33 [2023-02-15 22:18:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:42,933 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 208 transitions. [2023-02-15 22:18:42,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 208 transitions. [2023-02-15 22:18:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 22:18:42,934 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:42,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:18:42,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 22:18:43,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:43,140 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:43,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:43,141 INFO L85 PathProgramCache]: Analyzing trace with hash 705439333, now seen corresponding path program 1 times [2023-02-15 22:18:43,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:43,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431313231] [2023-02-15 22:18:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 22:18:43,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:43,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431313231] [2023-02-15 22:18:43,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431313231] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:18:43,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788080011] [2023-02-15 22:18:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:43,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:43,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:43,340 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) [2023-02-15 22:18:43,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 22:18:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:43,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 22:18:43,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:18:43,457 INFO L321 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-02-15 22:18:43,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 20 treesize of output 27 [2023-02-15 22:18:43,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 20 treesize of output 19 [2023-02-15 22:18:43,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 25 treesize of output 27 [2023-02-15 22:18:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 22:18:43,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:18:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 22:18:43,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788080011] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:18:43,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:18:43,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-02-15 22:18:43,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789293631] [2023-02-15 22:18:43,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:18:43,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 22:18:43,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:18:43,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 22:18:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-02-15 22:18:43,954 INFO L87 Difference]: Start difference. First operand 191 states and 208 transitions. Second operand has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:44,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:18:44,303 INFO L93 Difference]: Finished difference Result 201 states and 217 transitions. [2023-02-15 22:18:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 22:18:44,303 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-15 22:18:44,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:18:44,304 INFO L225 Difference]: With dead ends: 201 [2023-02-15 22:18:44,304 INFO L226 Difference]: Without dead ends: 176 [2023-02-15 22:18:44,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-02-15 22:18:44,305 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 26 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:18:44,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 369 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:18:44,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-02-15 22:18:44,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-02-15 22:18:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 153 states have (on average 1.2549019607843137) internal successors, (192), 175 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2023-02-15 22:18:44,308 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 35 [2023-02-15 22:18:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:18:44,308 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2023-02-15 22:18:44,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:18:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2023-02-15 22:18:44,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 22:18:44,308 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:18:44,308 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1] [2023-02-15 22:18:44,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 22:18:44,514 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,SelfDestructingSolverStorable22 [2023-02-15 22:18:44,514 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-02-15 22:18:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:18:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash 283994547, now seen corresponding path program 2 times [2023-02-15 22:18:44,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:18:44,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339318068] [2023-02-15 22:18:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:18:44,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:18:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:18:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:44,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:18:44,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339318068] [2023-02-15 22:18:44,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339318068] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:18:44,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762208104] [2023-02-15 22:18:44,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 22:18:44,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:18:44,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:18:44,903 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) [2023-02-15 22:18:44,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 22:18:45,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 22:18:45,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 22:18:45,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 65 conjunts are in the unsatisfiable core [2023-02-15 22:18:45,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:18:45,033 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 [2023-02-15 22:18:45,083 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 22:18:45,084 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 [2023-02-15 22:18:45,117 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 [2023-02-15 22:18:45,120 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 [2023-02-15 22:18:45,218 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-15 22:18:45,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-02-15 22:18:45,228 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 21 [2023-02-15 22:18:45,283 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 22:18:45,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2023-02-15 22:18:45,286 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 0 case distinctions, treesize of input 38 treesize of output 36 [2023-02-15 22:18:45,542 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2023-02-15 22:18:45,543 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 61 treesize of output 35 [2023-02-15 22:18:45,550 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 22:18:45,550 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2023-02-15 22:18:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:18:45,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:18:57,704 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 22:19:02,169 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 5534 treesize of output 5502 [2023-02-15 22:19:04,246 INFO L321 Elim1Store]: treesize reduction 591, result has 51.0 percent of original size [2023-02-15 22:19:04,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 15 new quantified variables, introduced 92 case distinctions, treesize of input 3466950 treesize of output 3325488