./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/dll2c_prepend_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-simple/dll2c_prepend_unequal.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 583b66b9d59d34de12ff7e58a8eb24a95055476e3f5044dc2a7c6b2bb83f4c67 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 03:24:00,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 03:24:00,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 03:24:00,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 03:24:00,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 03:24:00,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 03:24:00,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 03:24:00,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 03:24:00,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 03:24:00,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 03:24:00,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 03:24:00,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 03:24:00,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 03:24:00,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 03:24:00,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 03:24:00,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 03:24:00,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 03:24:00,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 03:24:00,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 03:24:00,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 03:24:00,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 03:24:00,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 03:24:00,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 03:24:00,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 03:24:00,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 03:24:00,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 03:24:00,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 03:24:00,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 03:24:00,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 03:24:00,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 03:24:00,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 03:24:00,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 03:24:00,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 03:24:00,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 03:24:00,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 03:24:00,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 03:24:00,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 03:24:00,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 03:24:00,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 03:24:00,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 03:24:00,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 03:24:00,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 03:24:00,368 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 03:24:00,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 03:24:00,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 03:24:00,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 03:24:00,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 03:24:00,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 03:24:00,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 03:24:00,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 03:24:00,375 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 03:24:00,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 03:24:00,375 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 03:24:00,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 03:24:00,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 03:24:00,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 03:24:00,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 03:24:00,376 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 03:24:00,376 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 03:24:00,376 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 03:24:00,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 03:24:00,377 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 03:24:00,377 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 03:24:00,377 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 03:24:00,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 03:24:00,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 03:24:00,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 03:24:00,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:24:00,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 03:24:00,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 03:24:00,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 03:24:00,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 03:24:00,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 03:24:00,379 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 03:24:00,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 03:24:00,379 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 03:24:00,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 583b66b9d59d34de12ff7e58a8eb24a95055476e3f5044dc2a7c6b2bb83f4c67 [2023-02-17 03:24:00,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 03:24:00,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 03:24:00,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 03:24:00,606 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 03:24:00,606 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 03:24:00,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_prepend_unequal.i [2023-02-17 03:24:01,773 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 03:24:01,933 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 03:24:01,933 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_prepend_unequal.i [2023-02-17 03:24:01,940 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/826e87fe0/d7f4b5abf2a242f88c313ab169015ef4/FLAG0db4b4746 [2023-02-17 03:24:01,957 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/826e87fe0/d7f4b5abf2a242f88c313ab169015ef4 [2023-02-17 03:24:01,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 03:24:01,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 03:24:01,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 03:24:01,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 03:24:01,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 03:24:01,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:24:01" (1/1) ... [2023-02-17 03:24:01,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2615a6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:01, skipping insertion in model container [2023-02-17 03:24:01,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:24:01" (1/1) ... [2023-02-17 03:24:01,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 03:24:02,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 03:24:02,221 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_prepend_unequal.i[24729,24742] [2023-02-17 03:24:02,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:24:02,231 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 03:24:02,268 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_prepend_unequal.i[24729,24742] [2023-02-17 03:24:02,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:24:02,286 INFO L208 MainTranslator]: Completed translation [2023-02-17 03:24:02,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02 WrapperNode [2023-02-17 03:24:02,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 03:24:02,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 03:24:02,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 03:24:02,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 03:24:02,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,346 INFO L138 Inliner]: procedures = 127, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2023-02-17 03:24:02,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 03:24:02,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 03:24:02,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 03:24:02,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 03:24:02,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,371 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 03:24:02,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 03:24:02,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 03:24:02,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 03:24:02,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (1/1) ... [2023-02-17 03:24:02,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:24:02,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:02,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 03:24:02,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 03:24:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 03:24:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 03:24:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-02-17 03:24:02,438 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-02-17 03:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 03:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 03:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 03:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 03:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 03:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 03:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 03:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 03:24:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 03:24:02,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 03:24:02,615 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 03:24:02,620 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 03:24:02,910 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 03:24:02,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 03:24:02,916 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-17 03:24:02,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:24:02 BoogieIcfgContainer [2023-02-17 03:24:02,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 03:24:02,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 03:24:02,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 03:24:02,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 03:24:02,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 03:24:01" (1/3) ... [2023-02-17 03:24:02,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cf7bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:24:02, skipping insertion in model container [2023-02-17 03:24:02,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:24:02" (2/3) ... [2023-02-17 03:24:02,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cf7bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:24:02, skipping insertion in model container [2023-02-17 03:24:02,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:24:02" (3/3) ... [2023-02-17 03:24:02,926 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_unequal.i [2023-02-17 03:24:02,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 03:24:02,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2023-02-17 03:24:02,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 03:24:02,988 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;@7456898e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 03:24:02,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-02-17 03:24:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 133 states have internal predecessors, (146), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:02,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 03:24:02,998 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:02,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 03:24:03,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:03,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:03,008 INFO L85 PathProgramCache]: Analyzing trace with hash 895672562, now seen corresponding path program 1 times [2023-02-17 03:24:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:03,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894848947] [2023-02-17 03:24:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:03,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:24:03,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:03,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894848947] [2023-02-17 03:24:03,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894848947] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:03,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:03,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:24:03,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816120002] [2023-02-17 03:24:03,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:03,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:24:03,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:03,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:24:03,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:24:03,269 INFO L87 Difference]: Start difference. First operand has 138 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 133 states have internal predecessors, (146), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:24:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:03,394 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2023-02-17 03:24:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:24:03,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 03:24:03,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:03,402 INFO L225 Difference]: With dead ends: 135 [2023-02-17 03:24:03,402 INFO L226 Difference]: Without dead ends: 132 [2023-02-17 03:24:03,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:24:03,405 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 10 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:03,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 207 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:24:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-17 03:24:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-02-17 03:24:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 67 states have (on average 2.014925373134328) internal successors, (135), 127 states have internal predecessors, (135), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions. [2023-02-17 03:24:03,434 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 6 [2023-02-17 03:24:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:03,434 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions. [2023-02-17 03:24:03,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:24:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions. [2023-02-17 03:24:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 03:24:03,435 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:03,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 03:24:03,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 03:24:03,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash 895672563, now seen corresponding path program 1 times [2023-02-17 03:24:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:03,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723765706] [2023-02-17 03:24:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:03,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:24:03,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:03,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723765706] [2023-02-17 03:24:03,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723765706] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:03,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:03,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:24:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821447537] [2023-02-17 03:24:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:03,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:24:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:03,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:24:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:24:03,491 INFO L87 Difference]: Start difference. First operand 132 states and 141 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:24:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:03,575 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2023-02-17 03:24:03,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:24:03,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 03:24:03,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:03,577 INFO L225 Difference]: With dead ends: 129 [2023-02-17 03:24:03,577 INFO L226 Difference]: Without dead ends: 129 [2023-02-17 03:24:03,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:24:03,579 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 5 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:03,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 209 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:24:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-17 03:24:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-02-17 03:24:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 124 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2023-02-17 03:24:03,589 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 6 [2023-02-17 03:24:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:03,590 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2023-02-17 03:24:03,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:24:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2023-02-17 03:24:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 03:24:03,591 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:03,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:03,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 03:24:03,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:03,592 INFO L85 PathProgramCache]: Analyzing trace with hash -753542016, now seen corresponding path program 1 times [2023-02-17 03:24:03,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:03,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012326919] [2023-02-17 03:24:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:03,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:24:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:03,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012326919] [2023-02-17 03:24:03,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012326919] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:03,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:03,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:24:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338637114] [2023-02-17 03:24:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:03,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 03:24:03,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 03:24:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 03:24:03,689 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 03:24:03,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:03,809 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2023-02-17 03:24:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 03:24:03,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-02-17 03:24:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:03,815 INFO L225 Difference]: With dead ends: 140 [2023-02-17 03:24:03,815 INFO L226 Difference]: Without dead ends: 140 [2023-02-17 03:24:03,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 03:24:03,823 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 10 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:03,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 313 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:24:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-02-17 03:24:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2023-02-17 03:24:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 68 states have (on average 1.9558823529411764) internal successors, (133), 125 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2023-02-17 03:24:03,837 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 14 [2023-02-17 03:24:03,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:03,837 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2023-02-17 03:24:03,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 03:24:03,838 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2023-02-17 03:24:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 03:24:03,838 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:03,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:03,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 03:24:03,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:03,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash 265974304, now seen corresponding path program 1 times [2023-02-17 03:24:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:03,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027366179] [2023-02-17 03:24:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:03,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:24:04,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:04,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027366179] [2023-02-17 03:24:04,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027366179] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:04,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:04,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:24:04,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012494423] [2023-02-17 03:24:04,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:24:04,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:04,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:24:04,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:24:04,048 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:24:04,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:04,330 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2023-02-17 03:24:04,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:24:04,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-02-17 03:24:04,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:04,332 INFO L225 Difference]: With dead ends: 130 [2023-02-17 03:24:04,333 INFO L226 Difference]: Without dead ends: 130 [2023-02-17 03:24:04,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:24:04,334 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 21 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:04,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 426 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:24:04,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-17 03:24:04,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2023-02-17 03:24:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 124 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2023-02-17 03:24:04,342 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 24 [2023-02-17 03:24:04,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:04,342 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2023-02-17 03:24:04,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:24:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2023-02-17 03:24:04,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 03:24:04,343 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:04,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:04,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 03:24:04,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:04,344 INFO L85 PathProgramCache]: Analyzing trace with hash 265974305, now seen corresponding path program 1 times [2023-02-17 03:24:04,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:04,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198818727] [2023-02-17 03:24:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:04,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:04,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:04,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:04,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198818727] [2023-02-17 03:24:04,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198818727] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:04,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:04,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:24:04,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320113801] [2023-02-17 03:24:04,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:04,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:24:04,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:04,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:24:04,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:24:04,573 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:24:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:04,770 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2023-02-17 03:24:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:24:04,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-02-17 03:24:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:04,771 INFO L225 Difference]: With dead ends: 129 [2023-02-17 03:24:04,772 INFO L226 Difference]: Without dead ends: 129 [2023-02-17 03:24:04,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:24:04,773 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 19 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:04,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 450 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:24:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-17 03:24:04,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2023-02-17 03:24:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 123 states have internal predecessors, (131), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:04,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 137 transitions. [2023-02-17 03:24:04,786 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 137 transitions. Word has length 24 [2023-02-17 03:24:04,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:04,786 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 137 transitions. [2023-02-17 03:24:04,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:24:04,787 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 137 transitions. [2023-02-17 03:24:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 03:24:04,788 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:04,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:04,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 03:24:04,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:04,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2096731903, now seen corresponding path program 1 times [2023-02-17 03:24:04,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:04,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663829155] [2023-02-17 03:24:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:04,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:04,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:05,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663829155] [2023-02-17 03:24:05,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663829155] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52467140] [2023-02-17 03:24:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:05,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:05,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:05,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:24:05,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 03:24:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:05,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 03:24:05,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:05,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:24:05,324 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_352 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_352))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2023-02-17 03:24:05,353 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:05,354 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 39 [2023-02-17 03:24:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-02-17 03:24:05,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:05,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52467140] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:05,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:24:05,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2023-02-17 03:24:05,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376515969] [2023-02-17 03:24:05,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:05,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 03:24:05,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 03:24:05,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2023-02-17 03:24:05,385 INFO L87 Difference]: Start difference. First operand 128 states and 137 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:24:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:05,711 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2023-02-17 03:24:05,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:24:05,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-02-17 03:24:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:05,713 INFO L225 Difference]: With dead ends: 153 [2023-02-17 03:24:05,713 INFO L226 Difference]: Without dead ends: 153 [2023-02-17 03:24:05,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=121, Unknown=1, NotChecked=22, Total=182 [2023-02-17 03:24:05,714 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 107 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:05,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 404 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 453 Invalid, 0 Unknown, 158 Unchecked, 0.3s Time] [2023-02-17 03:24:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-02-17 03:24:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 133. [2023-02-17 03:24:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 1.9027777777777777) internal successors, (137), 127 states have internal predecessors, (137), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 03:24:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2023-02-17 03:24:05,719 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 26 [2023-02-17 03:24:05,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:05,720 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2023-02-17 03:24:05,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:24:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2023-02-17 03:24:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 03:24:05,720 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:05,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:05,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:05,927 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,SelfDestructingSolverStorable5 [2023-02-17 03:24:05,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:05,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2096731902, now seen corresponding path program 1 times [2023-02-17 03:24:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:05,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783089461] [2023-02-17 03:24:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:06,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:06,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783089461] [2023-02-17 03:24:06,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783089461] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:06,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000612437] [2023-02-17 03:24:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:06,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:06,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:06,220 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) [2023-02-17 03:24:06,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 03:24:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:06,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-17 03:24:06,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:06,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:24:06,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:06,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 32 [2023-02-17 03:24:06,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:06,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 03:24:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:24:06,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:06,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000612437] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:06,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:24:06,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2023-02-17 03:24:06,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221181751] [2023-02-17 03:24:06,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:06,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-17 03:24:06,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:06,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-17 03:24:06,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2023-02-17 03:24:06,549 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-17 03:24:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:07,092 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2023-02-17 03:24:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:24:07,092 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2023-02-17 03:24:07,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:07,093 INFO L225 Difference]: With dead ends: 135 [2023-02-17 03:24:07,093 INFO L226 Difference]: Without dead ends: 135 [2023-02-17 03:24:07,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2023-02-17 03:24:07,094 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 15 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:07,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 976 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 03:24:07,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-02-17 03:24:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2023-02-17 03:24:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 1.8888888888888888) internal successors, (136), 127 states have internal predecessors, (136), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 03:24:07,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2023-02-17 03:24:07,098 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 26 [2023-02-17 03:24:07,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:07,098 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2023-02-17 03:24:07,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-17 03:24:07,099 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2023-02-17 03:24:07,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 03:24:07,099 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:07,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:07,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:07,304 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,SelfDestructingSolverStorable6 [2023-02-17 03:24:07,305 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:07,305 INFO L85 PathProgramCache]: Analyzing trace with hash -619542825, now seen corresponding path program 1 times [2023-02-17 03:24:07,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:07,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651679312] [2023-02-17 03:24:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:07,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:07,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:07,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651679312] [2023-02-17 03:24:07,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651679312] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:07,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41332039] [2023-02-17 03:24:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:07,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:07,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:07,439 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) [2023-02-17 03:24:07,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 03:24:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:07,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 03:24:07,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:07,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:07,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41332039] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:24:07,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:24:07,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2023-02-17 03:24:07,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836330077] [2023-02-17 03:24:07,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:07,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:24:07,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:24:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:24:07,582 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 03:24:07,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:07,706 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2023-02-17 03:24:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:24:07,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2023-02-17 03:24:07,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:07,707 INFO L225 Difference]: With dead ends: 134 [2023-02-17 03:24:07,707 INFO L226 Difference]: Without dead ends: 134 [2023-02-17 03:24:07,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:24:07,708 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 4 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:07,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 660 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:24:07,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-02-17 03:24:07,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2023-02-17 03:24:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 1.875) internal successors, (135), 127 states have internal predecessors, (135), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 03:24:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2023-02-17 03:24:07,711 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 28 [2023-02-17 03:24:07,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:07,711 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2023-02-17 03:24:07,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 03:24:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2023-02-17 03:24:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 03:24:07,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:07,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:07,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-17 03:24:07,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:07,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2030739054, now seen corresponding path program 1 times [2023-02-17 03:24:07,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:07,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161503642] [2023-02-17 03:24:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:07,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-17 03:24:07,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:07,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161503642] [2023-02-17 03:24:07,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161503642] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:07,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343891371] [2023-02-17 03:24:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:07,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:07,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:07,971 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) [2023-02-17 03:24:07,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 03:24:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:08,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 03:24:08,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-17 03:24:08,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:08,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:08,083 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 12 treesize of output 16 [2023-02-17 03:24:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-17 03:24:08,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343891371] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:24:08,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:24:08,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 5 [2023-02-17 03:24:08,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937665737] [2023-02-17 03:24:08,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:08,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:24:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:24:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:24:08,087 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:24:08,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:08,236 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2023-02-17 03:24:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:24:08,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-02-17 03:24:08,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:08,238 INFO L225 Difference]: With dead ends: 138 [2023-02-17 03:24:08,238 INFO L226 Difference]: Without dead ends: 138 [2023-02-17 03:24:08,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:24:08,238 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 11 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:08,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 429 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:24:08,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-17 03:24:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2023-02-17 03:24:08,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 1.8666666666666667) internal successors, (140), 130 states have internal predecessors, (140), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 03:24:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2023-02-17 03:24:08,241 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 29 [2023-02-17 03:24:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:08,241 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2023-02-17 03:24:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:24:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2023-02-17 03:24:08,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 03:24:08,242 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:08,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:08,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:08,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:08,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2030739053, now seen corresponding path program 1 times [2023-02-17 03:24:08,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:08,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517767509] [2023-02-17 03:24:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:08,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:08,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:08,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517767509] [2023-02-17 03:24:08,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517767509] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:08,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027172865] [2023-02-17 03:24:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:08,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:08,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:08,599 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) [2023-02-17 03:24:08,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 03:24:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:08,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-17 03:24:08,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:08,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:08,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:08,756 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 22 treesize of output 26 [2023-02-17 03:24:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:08,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027172865] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:24:08,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:24:08,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2023-02-17 03:24:08,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106390174] [2023-02-17 03:24:08,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:08,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 03:24:08,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 03:24:08,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-02-17 03:24:08,795 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 03:24:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:09,083 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2023-02-17 03:24:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 03:24:09,083 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29 [2023-02-17 03:24:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:09,084 INFO L225 Difference]: With dead ends: 143 [2023-02-17 03:24:09,084 INFO L226 Difference]: Without dead ends: 143 [2023-02-17 03:24:09,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-02-17 03:24:09,085 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 21 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:09,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1191 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 03:24:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-02-17 03:24:09,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 136. [2023-02-17 03:24:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 1.8533333333333333) internal successors, (139), 130 states have internal predecessors, (139), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 03:24:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2023-02-17 03:24:09,089 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 29 [2023-02-17 03:24:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:09,089 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2023-02-17 03:24:09,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 03:24:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2023-02-17 03:24:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 03:24:09,090 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:09,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:09,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:09,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-17 03:24:09,297 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:09,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:09,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1471598771, now seen corresponding path program 1 times [2023-02-17 03:24:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:09,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255598870] [2023-02-17 03:24:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:09,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:24:09,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:09,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255598870] [2023-02-17 03:24:09,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255598870] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:09,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:09,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 03:24:09,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008427276] [2023-02-17 03:24:09,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:09,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 03:24:09,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 03:24:09,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:24:09,398 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:24:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:09,620 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2023-02-17 03:24:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 03:24:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-02-17 03:24:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:09,621 INFO L225 Difference]: With dead ends: 136 [2023-02-17 03:24:09,621 INFO L226 Difference]: Without dead ends: 136 [2023-02-17 03:24:09,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-17 03:24:09,622 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 24 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:09,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 475 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:24:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-17 03:24:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2023-02-17 03:24:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 75 states have (on average 1.84) internal successors, (138), 129 states have internal predecessors, (138), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 03:24:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2023-02-17 03:24:09,625 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 30 [2023-02-17 03:24:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:09,626 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2023-02-17 03:24:09,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:24:09,626 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2023-02-17 03:24:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 03:24:09,626 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:09,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:09,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-17 03:24:09,627 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:09,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1471598772, now seen corresponding path program 1 times [2023-02-17 03:24:09,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:09,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162445768] [2023-02-17 03:24:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:09,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:09,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:09,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162445768] [2023-02-17 03:24:09,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162445768] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:09,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:09,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 03:24:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565388717] [2023-02-17 03:24:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:09,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 03:24:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 03:24:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:24:09,774 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:24:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:10,026 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2023-02-17 03:24:10,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 03:24:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-02-17 03:24:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:10,028 INFO L225 Difference]: With dead ends: 134 [2023-02-17 03:24:10,028 INFO L226 Difference]: Without dead ends: 134 [2023-02-17 03:24:10,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-17 03:24:10,029 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 20 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:10,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 505 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:24:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-02-17 03:24:10,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-02-17 03:24:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 75 states have (on average 1.8266666666666667) internal successors, (137), 128 states have internal predecessors, (137), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 03:24:10,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2023-02-17 03:24:10,032 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 30 [2023-02-17 03:24:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:10,033 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2023-02-17 03:24:10,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:24:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2023-02-17 03:24:10,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-17 03:24:10,034 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:10,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:10,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-17 03:24:10,034 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:10,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:10,035 INFO L85 PathProgramCache]: Analyzing trace with hash 939320083, now seen corresponding path program 1 times [2023-02-17 03:24:10,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:10,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122496804] [2023-02-17 03:24:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-17 03:24:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 03:24:10,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:10,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122496804] [2023-02-17 03:24:10,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122496804] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:10,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088754599] [2023-02-17 03:24:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:10,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:10,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:10,138 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) [2023-02-17 03:24:10,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 03:24:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 03:24:10,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-17 03:24:10,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:24:10,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088754599] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:10,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 03:24:10,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-02-17 03:24:10,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68945017] [2023-02-17 03:24:10,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:10,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 03:24:10,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:10,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 03:24:10,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:24:10,289 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:24:10,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:10,296 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2023-02-17 03:24:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 03:24:10,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2023-02-17 03:24:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:10,297 INFO L225 Difference]: With dead ends: 122 [2023-02-17 03:24:10,297 INFO L226 Difference]: Without dead ends: 122 [2023-02-17 03:24:10,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:24:10,298 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 107 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:10,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 153 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:24:10,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-02-17 03:24:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-02-17 03:24:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 68 states have (on average 1.8088235294117647) internal successors, (123), 117 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2023-02-17 03:24:10,300 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 41 [2023-02-17 03:24:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:10,301 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2023-02-17 03:24:10,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:24:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2023-02-17 03:24:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 03:24:10,301 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:10,301 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:10,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:10,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:10,518 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:10,518 INFO L85 PathProgramCache]: Analyzing trace with hash -566913869, now seen corresponding path program 1 times [2023-02-17 03:24:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:10,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020787612] [2023-02-17 03:24:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 03:24:10,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:10,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020787612] [2023-02-17 03:24:10,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020787612] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:10,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345289824] [2023-02-17 03:24:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:10,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:10,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:10,807 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) [2023-02-17 03:24:10,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 03:24:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:10,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-17 03:24:10,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:10,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:24:10,969 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 [2023-02-17 03:24:10,978 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1582 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_1582))))) is different from true [2023-02-17 03:24:10,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:10,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-17 03:24:10,995 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 [2023-02-17 03:24:10,997 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2023-02-17 03:24:11,019 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:11,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 28 [2023-02-17 03:24:11,037 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 [2023-02-17 03:24:11,043 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1584 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_1584))))) is different from true [2023-02-17 03:24:11,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:11,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-17 03:24:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 21 not checked. [2023-02-17 03:24:11,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:11,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345289824] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:11,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:24:11,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-17 03:24:11,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075582808] [2023-02-17 03:24:11,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:11,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-17 03:24:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-17 03:24:11,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=125, Unknown=3, NotChecked=72, Total=240 [2023-02-17 03:24:11,080 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 03:24:11,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:11,296 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2023-02-17 03:24:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:24:11,296 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2023-02-17 03:24:11,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:11,297 INFO L225 Difference]: With dead ends: 132 [2023-02-17 03:24:11,297 INFO L226 Difference]: Without dead ends: 132 [2023-02-17 03:24:11,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=166, Unknown=3, NotChecked=84, Total=306 [2023-02-17 03:24:11,298 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 185 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:11,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 262 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 357 Invalid, 0 Unknown, 342 Unchecked, 0.2s Time] [2023-02-17 03:24:11,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-17 03:24:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2023-02-17 03:24:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 109 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2023-02-17 03:24:11,300 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 43 [2023-02-17 03:24:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:11,300 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2023-02-17 03:24:11,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 03:24:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2023-02-17 03:24:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 03:24:11,301 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:11,301 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:11,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:11,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:11,506 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash -566913868, now seen corresponding path program 1 times [2023-02-17 03:24:11,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:11,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795820685] [2023-02-17 03:24:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:11,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:11,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-17 03:24:11,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:11,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795820685] [2023-02-17 03:24:11,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795820685] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:11,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945023618] [2023-02-17 03:24:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:11,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:11,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:11,862 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) [2023-02-17 03:24:11,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 03:24:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:12,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-17 03:24:12,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:12,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:24:12,034 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 [2023-02-17 03:24:12,042 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1821 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1821) |c_#length|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2023-02-17 03:24:12,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:12,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 03:24:12,059 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 [2023-02-17 03:24:12,061 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1822 Int)) (= |c_#length| (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1822))))) is different from true [2023-02-17 03:24:12,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:12,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 03:24:12,079 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 [2023-02-17 03:24:12,081 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1823 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1823) |c_#length|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2023-02-17 03:24:12,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:12,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 03:24:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 21 not checked. [2023-02-17 03:24:12,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:12,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945023618] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:12,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:24:12,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2023-02-17 03:24:12,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437241843] [2023-02-17 03:24:12,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:12,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-17 03:24:12,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-17 03:24:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=147, Unknown=3, NotChecked=78, Total=272 [2023-02-17 03:24:12,131 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand has 15 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 03:24:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:12,434 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2023-02-17 03:24:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:24:12,434 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2023-02-17 03:24:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:12,435 INFO L225 Difference]: With dead ends: 124 [2023-02-17 03:24:12,435 INFO L226 Difference]: Without dead ends: 124 [2023-02-17 03:24:12,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=215, Unknown=3, NotChecked=96, Total=380 [2023-02-17 03:24:12,435 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 261 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:12,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 302 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 474 Invalid, 0 Unknown, 375 Unchecked, 0.3s Time] [2023-02-17 03:24:12,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-02-17 03:24:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2023-02-17 03:24:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 68 states have (on average 1.5735294117647058) internal successors, (107), 101 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2023-02-17 03:24:12,453 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 43 [2023-02-17 03:24:12,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:12,453 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2023-02-17 03:24:12,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 03:24:12,453 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2023-02-17 03:24:12,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 03:24:12,454 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:12,454 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:12,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:12,654 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,SelfDestructingSolverStorable14 [2023-02-17 03:24:12,654 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1119645598, now seen corresponding path program 1 times [2023-02-17 03:24:12,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:12,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961894977] [2023-02-17 03:24:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:12,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:12,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 03:24:12,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:12,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961894977] [2023-02-17 03:24:12,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961894977] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:12,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:12,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:24:12,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820810871] [2023-02-17 03:24:12,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:12,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:24:12,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:12,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:24:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:24:12,756 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:24:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:12,892 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2023-02-17 03:24:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:24:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2023-02-17 03:24:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:12,893 INFO L225 Difference]: With dead ends: 120 [2023-02-17 03:24:12,893 INFO L226 Difference]: Without dead ends: 120 [2023-02-17 03:24:12,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:24:12,894 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 77 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:12,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 282 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:24:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-17 03:24:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2023-02-17 03:24:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 68 states have (on average 1.5147058823529411) internal successors, (103), 97 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2023-02-17 03:24:12,896 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 46 [2023-02-17 03:24:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:12,896 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2023-02-17 03:24:12,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:24:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2023-02-17 03:24:12,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 03:24:12,897 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:12,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:12,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-17 03:24:12,897 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:12,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1119645597, now seen corresponding path program 1 times [2023-02-17 03:24:12,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:12,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218713097] [2023-02-17 03:24:12,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:12,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:12,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:13,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-17 03:24:13,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:13,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218713097] [2023-02-17 03:24:13,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218713097] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:13,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:13,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:24:13,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820060941] [2023-02-17 03:24:13,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:13,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:24:13,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:13,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:24:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:24:13,041 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:24:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:13,168 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2023-02-17 03:24:13,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:24:13,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2023-02-17 03:24:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:13,169 INFO L225 Difference]: With dead ends: 98 [2023-02-17 03:24:13,169 INFO L226 Difference]: Without dead ends: 98 [2023-02-17 03:24:13,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:24:13,169 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 76 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:13,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 293 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:24:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-17 03:24:13,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-02-17 03:24:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 93 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2023-02-17 03:24:13,171 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 46 [2023-02-17 03:24:13,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:13,171 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2023-02-17 03:24:13,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:24:13,172 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2023-02-17 03:24:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 03:24:13,172 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:13,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:13,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-17 03:24:13,172 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:13,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:13,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1119634675, now seen corresponding path program 1 times [2023-02-17 03:24:13,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:13,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555713546] [2023-02-17 03:24:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:13,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 03:24:13,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:13,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555713546] [2023-02-17 03:24:13,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555713546] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:13,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586582071] [2023-02-17 03:24:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:13,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:13,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:13,624 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) [2023-02-17 03:24:13,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 03:24:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:13,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-17 03:24:13,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:13,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:24:13,900 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 9 treesize of output 5 [2023-02-17 03:24:13,964 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_2367 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_2367))) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1)))) is different from true [2023-02-17 03:24:13,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:13,972 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 [2023-02-17 03:24:13,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:13,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 44 [2023-02-17 03:24:14,040 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 84 treesize of output 60 [2023-02-17 03:24:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-02-17 03:24:14,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:14,053 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.base_48| Int) (v_ArrVal_2373 (Array Int Int))) (or (= (select (store |c_#valid| |v_node_create_~temp~0#1.base_48| 1) (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_48| v_ArrVal_2373) |c_ULTIMATE.start_dll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_dll_circular_prepend_~head#1.offset|)) 1) (not (< |v_node_create_~temp~0#1.base_48| |c_#StackHeapBarrier|)))) is different from false [2023-02-17 03:24:14,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586582071] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:14,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:24:14,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2023-02-17 03:24:14,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14582546] [2023-02-17 03:24:14,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:14,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-17 03:24:14,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-17 03:24:14,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=573, Unknown=3, NotChecked=98, Total=756 [2023-02-17 03:24:14,055 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 27 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:24:14,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:14,494 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2023-02-17 03:24:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 03:24:14,495 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 46 [2023-02-17 03:24:14,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:14,495 INFO L225 Difference]: With dead ends: 115 [2023-02-17 03:24:14,495 INFO L226 Difference]: Without dead ends: 115 [2023-02-17 03:24:14,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=952, Unknown=5, NotChecked=130, Total=1260 [2023-02-17 03:24:14,496 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 432 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:14,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 476 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 679 Invalid, 3 Unknown, 120 Unchecked, 0.3s Time] [2023-02-17 03:24:14,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-17 03:24:14,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2023-02-17 03:24:14,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.4411764705882353) internal successors, (98), 92 states have internal predecessors, (98), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2023-02-17 03:24:14,498 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 46 [2023-02-17 03:24:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:14,498 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2023-02-17 03:24:14,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:24:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2023-02-17 03:24:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 03:24:14,499 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:14,499 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:14,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:14,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-17 03:24:14,705 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1119634674, now seen corresponding path program 1 times [2023-02-17 03:24:14,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:14,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797290799] [2023-02-17 03:24:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:14,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:15,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:24:15,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:15,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797290799] [2023-02-17 03:24:15,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797290799] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:15,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899214200] [2023-02-17 03:24:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:15,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:15,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:15,349 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:24:15,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 03:24:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:15,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-17 03:24:15,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:15,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:24:15,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-02-17 03:24:15,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-02-17 03:24:15,818 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_2607 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_2607) |c_#length|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_2612 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_2612))) (exists ((v_ArrVal_2613 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_2613))))) is different from true [2023-02-17 03:24:15,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:15,830 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 31 treesize of output 31 [2023-02-17 03:24:15,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:15,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-02-17 03:24:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:15,840 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 31 treesize of output 31 [2023-02-17 03:24:15,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:15,843 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 15 treesize of output 19 [2023-02-17 03:24:15,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-02-17 03:24:15,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-02-17 03:24:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-02-17 03:24:15,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:16,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899214200] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:16,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:24:16,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2023-02-17 03:24:16,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881663989] [2023-02-17 03:24:16,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:16,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-17 03:24:16,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:16,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-17 03:24:16,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1024, Unknown=2, NotChecked=64, Total=1190 [2023-02-17 03:24:16,023 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand has 32 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 28 states have internal predecessors, (73), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:24:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:16,994 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2023-02-17 03:24:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 03:24:16,994 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 28 states have internal predecessors, (73), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 46 [2023-02-17 03:24:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:16,995 INFO L225 Difference]: With dead ends: 96 [2023-02-17 03:24:16,995 INFO L226 Difference]: Without dead ends: 96 [2023-02-17 03:24:16,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=228, Invalid=1841, Unknown=5, NotChecked=88, Total=2162 [2023-02-17 03:24:16,996 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 347 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:16,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 996 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1432 Invalid, 3 Unknown, 100 Unchecked, 0.7s Time] [2023-02-17 03:24:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-02-17 03:24:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-02-17 03:24:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 91 states have internal predecessors, (97), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2023-02-17 03:24:16,998 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 46 [2023-02-17 03:24:16,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:16,998 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2023-02-17 03:24:16,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 28 states have internal predecessors, (73), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:24:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2023-02-17 03:24:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-17 03:24:16,998 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:16,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:17,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:17,204 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1999401721, now seen corresponding path program 1 times [2023-02-17 03:24:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:17,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713370110] [2023-02-17 03:24:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:17,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:17,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:24:17,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:17,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713370110] [2023-02-17 03:24:17,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713370110] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:17,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029430578] [2023-02-17 03:24:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:17,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:17,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:17,565 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:24:17,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 03:24:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:17,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-17 03:24:17,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:17,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:24:17,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 03:24:17,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:17,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 03:24:17,928 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:17,928 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 31 treesize of output 46 [2023-02-17 03:24:17,930 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 38 treesize of output 28 [2023-02-17 03:24:17,952 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:17,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 60 [2023-02-17 03:24:17,956 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 46 treesize of output 40 [2023-02-17 03:24:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-17 03:24:17,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:24:17,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029430578] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:17,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 03:24:17,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2023-02-17 03:24:17,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527187524] [2023-02-17 03:24:17,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:17,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 03:24:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:17,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 03:24:17,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2023-02-17 03:24:17,992 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 12 states, 10 states have (on average 3.8) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:24:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:18,261 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2023-02-17 03:24:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 03:24:18,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.8) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2023-02-17 03:24:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:18,262 INFO L225 Difference]: With dead ends: 113 [2023-02-17 03:24:18,262 INFO L226 Difference]: Without dead ends: 113 [2023-02-17 03:24:18,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2023-02-17 03:24:18,263 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 275 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:18,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 306 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:24:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-02-17 03:24:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2023-02-17 03:24:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 88 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2023-02-17 03:24:18,265 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 51 [2023-02-17 03:24:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:18,265 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2023-02-17 03:24:18,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.8) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:24:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2023-02-17 03:24:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-17 03:24:18,265 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:18,265 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:18,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:18,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:18,466 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1999401722, now seen corresponding path program 1 times [2023-02-17 03:24:18,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:18,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292631472] [2023-02-17 03:24:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:24:18,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:18,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292631472] [2023-02-17 03:24:18,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292631472] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:18,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817638152] [2023-02-17 03:24:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:18,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:18,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:18,804 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:24:18,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 03:24:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:19,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-17 03:24:19,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:19,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-02-17 03:24:19,174 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int) (v_ArrVal_3170 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_3170) |c_#memory_$Pointer$.base|) (<= |node_create_~temp~0#1.base| (+ (- 1) |c_#StackHeapBarrier|)))) is different from true [2023-02-17 03:24:19,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:19,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2023-02-17 03:24:19,194 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 29 treesize of output 17 [2023-02-17 03:24:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-02-17 03:24:19,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:19,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817638152] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:19,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:24:19,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 26 [2023-02-17 03:24:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716246602] [2023-02-17 03:24:19,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-17 03:24:19,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-17 03:24:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=4, NotChecked=50, Total=756 [2023-02-17 03:24:19,264 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 26 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 22 states have internal predecessors, (67), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:24:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:19,523 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2023-02-17 03:24:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 03:24:19,524 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 22 states have internal predecessors, (67), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 51 [2023-02-17 03:24:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:19,524 INFO L225 Difference]: With dead ends: 90 [2023-02-17 03:24:19,524 INFO L226 Difference]: Without dead ends: 90 [2023-02-17 03:24:19,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=957, Unknown=4, NotChecked=64, Total=1190 [2023-02-17 03:24:19,525 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 381 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:19,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 554 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 362 Invalid, 0 Unknown, 93 Unchecked, 0.2s Time] [2023-02-17 03:24:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-17 03:24:19,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-02-17 03:24:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 85 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2023-02-17 03:24:19,527 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 51 [2023-02-17 03:24:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:19,527 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2023-02-17 03:24:19,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 22 states have internal predecessors, (67), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:24:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2023-02-17 03:24:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-17 03:24:19,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:19,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:19,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-17 03:24:19,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-02-17 03:24:19,728 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:19,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:19,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1685641326, now seen corresponding path program 1 times [2023-02-17 03:24:19,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:19,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782548582] [2023-02-17 03:24:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:19,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-17 03:24:19,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:19,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782548582] [2023-02-17 03:24:19,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782548582] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:19,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:19,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:24:19,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277156318] [2023-02-17 03:24:19,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:19,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:24:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:24:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:24:19,812 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:24:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:19,911 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2023-02-17 03:24:19,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:24:19,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2023-02-17 03:24:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:19,913 INFO L225 Difference]: With dead ends: 107 [2023-02-17 03:24:19,913 INFO L226 Difference]: Without dead ends: 107 [2023-02-17 03:24:19,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-17 03:24:19,914 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 57 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:19,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 305 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:24:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-17 03:24:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2023-02-17 03:24:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 84 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2023-02-17 03:24:19,916 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 52 [2023-02-17 03:24:19,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:19,916 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2023-02-17 03:24:19,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:24:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2023-02-17 03:24:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-17 03:24:19,916 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:19,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:19,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-17 03:24:19,916 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:19,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1685641325, now seen corresponding path program 1 times [2023-02-17 03:24:19,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:19,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118803267] [2023-02-17 03:24:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:19,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:20,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:20,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-17 03:24:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:20,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118803267] [2023-02-17 03:24:20,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118803267] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:24:20,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:24:20,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:24:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800258891] [2023-02-17 03:24:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:24:20,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:24:20,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:24:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:24:20,077 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:24:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:20,227 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2023-02-17 03:24:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:24:20,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2023-02-17 03:24:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:20,228 INFO L225 Difference]: With dead ends: 88 [2023-02-17 03:24:20,228 INFO L226 Difference]: Without dead ends: 88 [2023-02-17 03:24:20,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-17 03:24:20,229 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 60 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:20,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 303 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:24:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-17 03:24:20,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-17 03:24:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.353846153846154) internal successors, (88), 83 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2023-02-17 03:24:20,233 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 52 [2023-02-17 03:24:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:20,233 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2023-02-17 03:24:20,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:24:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2023-02-17 03:24:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-17 03:24:20,234 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:20,234 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:20,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-17 03:24:20,235 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash -715273504, now seen corresponding path program 1 times [2023-02-17 03:24:20,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:20,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845802136] [2023-02-17 03:24:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:20,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:20,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:24:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:21,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845802136] [2023-02-17 03:24:21,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845802136] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:21,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712387660] [2023-02-17 03:24:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:21,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:21,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:21,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:24:21,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 03:24:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:21,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 87 conjunts are in the unsatisfiable core [2023-02-17 03:24:21,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:21,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:24:21,619 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 [2023-02-17 03:24:21,690 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:21,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 32 [2023-02-17 03:24:21,693 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 18 treesize of output 14 [2023-02-17 03:24:21,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:21,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 03:24:21,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:21,850 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:21,850 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 2 case distinctions, treesize of input 37 treesize of output 60 [2023-02-17 03:24:21,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:21,854 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 22 treesize of output 17 [2023-02-17 03:24:21,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:21,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 148 [2023-02-17 03:24:21,865 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 03:24:21,944 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 27 treesize of output 19 [2023-02-17 03:24:22,045 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:22,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 52 [2023-02-17 03:24:22,048 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 17 treesize of output 9 [2023-02-17 03:24:22,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-17 03:24:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:24:22,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:24:22,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712387660] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:22,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:24:22,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 38 [2023-02-17 03:24:22,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008415593] [2023-02-17 03:24:22,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:24:22,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-17 03:24:22,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:24:22,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-17 03:24:22,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2023-02-17 03:24:22,200 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 39 states, 36 states have (on average 2.138888888888889) internal successors, (77), 34 states have internal predecessors, (77), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 03:24:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:24:23,295 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2023-02-17 03:24:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-17 03:24:23,296 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 2.138888888888889) internal successors, (77), 34 states have internal predecessors, (77), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 53 [2023-02-17 03:24:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:24:23,296 INFO L225 Difference]: With dead ends: 105 [2023-02-17 03:24:23,296 INFO L226 Difference]: Without dead ends: 105 [2023-02-17 03:24:23,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=409, Invalid=3131, Unknown=0, NotChecked=0, Total=3540 [2023-02-17 03:24:23,297 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 473 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 03:24:23,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 875 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 03:24:23,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-17 03:24:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2023-02-17 03:24:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 82 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:24:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2023-02-17 03:24:23,299 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 53 [2023-02-17 03:24:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:24:23,299 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2023-02-17 03:24:23,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 2.138888888888889) internal successors, (77), 34 states have internal predecessors, (77), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 03:24:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2023-02-17 03:24:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-17 03:24:23,300 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:24:23,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:24:23,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-17 03:24:23,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-02-17 03:24:23,506 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-02-17 03:24:23,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:24:23,507 INFO L85 PathProgramCache]: Analyzing trace with hash -715273503, now seen corresponding path program 1 times [2023-02-17 03:24:23,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:24:23,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385751174] [2023-02-17 03:24:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:23,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:24:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:24:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-17 03:24:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-17 03:24:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 03:24:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:24:24,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385751174] [2023-02-17 03:24:24,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385751174] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:24:24,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568417433] [2023-02-17 03:24:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:24:24,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:24:24,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:24:24,459 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:24:24,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 03:24:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:24:24,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-17 03:24:24,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:24:24,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:24:24,915 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 [2023-02-17 03:24:24,918 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 [2023-02-17 03:24:25,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:25,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 62 [2023-02-17 03:24:25,020 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:25,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 42 [2023-02-17 03:24:25,025 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:25,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 03:24:25,028 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 [2023-02-17 03:24:25,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:25,174 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:25,174 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 2 case distinctions, treesize of input 89 treesize of output 102 [2023-02-17 03:24:25,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:25,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:25,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:25,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 66 [2023-02-17 03:24:25,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:24:25,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 33 [2023-02-17 03:24:25,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:25,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 58 [2023-02-17 03:24:25,199 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 03:24:25,364 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:25,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 347 treesize of output 579 [2023-02-17 03:24:25,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:24:25,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 273 treesize of output 547