./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e 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/dll2n_prepend_equal.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 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 22:04:17,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 22:04:17,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 22:04:17,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 22:04:17,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 22:04:17,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 22:04:17,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 22:04:17,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 22:04:17,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 22:04:17,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 22:04:17,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 22:04:17,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 22:04:17,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 22:04:17,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 22:04:17,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 22:04:17,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 22:04:17,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 22:04:17,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 22:04:17,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 22:04:17,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 22:04:17,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 22:04:17,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 22:04:17,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 22:04:17,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 22:04:17,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 22:04:17,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 22:04:17,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 22:04:17,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 22:04:17,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 22:04:17,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 22:04:17,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 22:04:17,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 22:04:17,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 22:04:17,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 22:04:17,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 22:04:17,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 22:04:17,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 22:04:17,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 22:04:17,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 22:04:17,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 22:04:17,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 22:04:17,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 22:04:17,602 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 22:04:17,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 22:04:17,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 22:04:17,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 22:04:17,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 22:04:17,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 22:04:17,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 22:04:17,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 22:04:17,605 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 22:04:17,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 22:04:17,606 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 22:04:17,606 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 22:04:17,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 22:04:17,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 22:04:17,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 22:04:17,607 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 22:04:17,607 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 22:04:17,607 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 22:04:17,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 22:04:17,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 22:04:17,608 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 22:04:17,608 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 22:04:17,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 22:04:17,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 22:04:17,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 22:04:17,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:04:17,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 22:04:17,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 22:04:17,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 22:04:17,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 22:04:17,610 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 22:04:17,610 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 22:04:17,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 22:04:17,610 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 22:04:17,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 [2023-02-18 22:04:17,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 22:04:17,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 22:04:17,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 22:04:17,829 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 22:04:17,829 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 22:04:17,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2023-02-18 22:04:18,973 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 22:04:19,232 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 22:04:19,234 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2023-02-18 22:04:19,252 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce38ba10/f9ac0b6affb243ea984cdca71d5e9e7c/FLAG35b9528c4 [2023-02-18 22:04:19,267 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce38ba10/f9ac0b6affb243ea984cdca71d5e9e7c [2023-02-18 22:04:19,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 22:04:19,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 22:04:19,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 22:04:19,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 22:04:19,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 22:04:19,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6400fd75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19, skipping insertion in model container [2023-02-18 22:04:19,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 22:04:19,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 22:04:19,561 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/dll2n_prepend_equal.i[24361,24374] [2023-02-18 22:04:19,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:04:19,580 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 22:04:19,610 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/dll2n_prepend_equal.i[24361,24374] [2023-02-18 22:04:19,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:04:19,633 INFO L208 MainTranslator]: Completed translation [2023-02-18 22:04:19,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19 WrapperNode [2023-02-18 22:04:19,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 22:04:19,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 22:04:19,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 22:04:19,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 22:04:19,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,690 INFO L138 Inliner]: procedures = 127, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2023-02-18 22:04:19,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 22:04:19,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 22:04:19,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 22:04:19,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 22:04:19,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 22:04:19,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 22:04:19,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 22:04:19,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 22:04:19,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (1/1) ... [2023-02-18 22:04:19,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:04:19,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:04:19,781 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) [2023-02-18 22:04:19,787 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 [2023-02-18 22:04:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-02-18 22:04:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-02-18 22:04:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 22:04:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 22:04:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 22:04:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 22:04:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 22:04:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 22:04:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 22:04:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 22:04:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-18 22:04:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 22:04:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 22:04:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 22:04:19,896 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 22:04:19,898 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 22:04:19,944 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-02-18 22:04:20,255 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 22:04:20,262 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 22:04:20,273 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 22:04:20,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:04:20 BoogieIcfgContainer [2023-02-18 22:04:20,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 22:04:20,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 22:04:20,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 22:04:20,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 22:04:20,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 10:04:19" (1/3) ... [2023-02-18 22:04:20,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534c3921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:04:20, skipping insertion in model container [2023-02-18 22:04:20,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:04:19" (2/3) ... [2023-02-18 22:04:20,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534c3921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:04:20, skipping insertion in model container [2023-02-18 22:04:20,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:04:20" (3/3) ... [2023-02-18 22:04:20,281 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal.i [2023-02-18 22:04:20,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 22:04:20,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2023-02-18 22:04:20,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 22:04:20,337 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;@2bb87f61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 22:04:20,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-02-18 22:04:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 50 states have (on average 2.06) internal successors, (103), 92 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 22:04:20,346 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:20,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 22:04:20,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash 33471376, now seen corresponding path program 1 times [2023-02-18 22:04:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:20,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637990916] [2023-02-18 22:04:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:20,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:20,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637990916] [2023-02-18 22:04:20,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637990916] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:20,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:20,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 22:04:20,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141385954] [2023-02-18 22:04:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:20,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:04:20,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:04:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:04:20,654 INFO L87 Difference]: Start difference. First operand has 94 states, 50 states have (on average 2.06) internal successors, (103), 92 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:20,782 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2023-02-18 22:04:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:04:20,784 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-18 22:04:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:20,790 INFO L225 Difference]: With dead ends: 161 [2023-02-18 22:04:20,790 INFO L226 Difference]: Without dead ends: 154 [2023-02-18 22:04:20,791 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 [2023-02-18 22:04:20,794 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 84 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:20,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 176 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-18 22:04:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 85. [2023-02-18 22:04:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 84 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2023-02-18 22:04:20,824 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 5 [2023-02-18 22:04:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:20,824 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2023-02-18 22:04:20,824 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2023-02-18 22:04:20,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 22:04:20,825 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:20,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 22:04:20,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 22:04:20,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:20,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:20,827 INFO L85 PathProgramCache]: Analyzing trace with hash 33471377, now seen corresponding path program 1 times [2023-02-18 22:04:20,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:20,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82277895] [2023-02-18 22:04:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:20,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:20,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:20,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82277895] [2023-02-18 22:04:20,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82277895] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:20,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:20,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 22:04:20,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847524399] [2023-02-18 22:04:20,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:04:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:04:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:04:20,949 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:21,100 INFO L93 Difference]: Finished difference Result 153 states and 162 transitions. [2023-02-18 22:04:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:04:21,100 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-18 22:04:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:21,101 INFO L225 Difference]: With dead ends: 153 [2023-02-18 22:04:21,102 INFO L226 Difference]: Without dead ends: 153 [2023-02-18 22:04:21,102 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 [2023-02-18 22:04:21,103 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 82 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:21,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 170 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-02-18 22:04:21,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 82. [2023-02-18 22:04:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.851063829787234) internal successors, (87), 81 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2023-02-18 22:04:21,110 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 5 [2023-02-18 22:04:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:21,110 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2023-02-18 22:04:21,110 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2023-02-18 22:04:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 22:04:21,111 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:21,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:21,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 22:04:21,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:21,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2100113040, now seen corresponding path program 1 times [2023-02-18 22:04:21,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:21,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944102735] [2023-02-18 22:04:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:21,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944102735] [2023-02-18 22:04:21,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944102735] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:21,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:21,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 22:04:21,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418271542] [2023-02-18 22:04:21,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:21,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:04:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:04:21,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:04:21,201 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:21,208 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2023-02-18 22:04:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:04:21,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 22:04:21,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:21,210 INFO L225 Difference]: With dead ends: 92 [2023-02-18 22:04:21,210 INFO L226 Difference]: Without dead ends: 92 [2023-02-18 22:04:21,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:04:21,211 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 10 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:21,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 168 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:04:21,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-18 22:04:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2023-02-18 22:04:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.8333333333333333) internal successors, (88), 82 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2023-02-18 22:04:21,218 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 7 [2023-02-18 22:04:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:21,218 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2023-02-18 22:04:21,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,218 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2023-02-18 22:04:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 22:04:21,219 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:21,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:21,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 22:04:21,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:21,220 INFO L85 PathProgramCache]: Analyzing trace with hash 638916372, now seen corresponding path program 1 times [2023-02-18 22:04:21,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:21,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614966535] [2023-02-18 22:04:21,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:21,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:21,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:21,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614966535] [2023-02-18 22:04:21,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614966535] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:21,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:21,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 22:04:21,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074547255] [2023-02-18 22:04:21,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:21,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:04:21,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:21,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:04:21,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:04:21,262 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:21,275 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2023-02-18 22:04:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:04:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 22:04:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:21,276 INFO L225 Difference]: With dead ends: 89 [2023-02-18 22:04:21,276 INFO L226 Difference]: Without dead ends: 89 [2023-02-18 22:04:21,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:04:21,277 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:21,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 163 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:04:21,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-18 22:04:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2023-02-18 22:04:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 87 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2023-02-18 22:04:21,283 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 9 [2023-02-18 22:04:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:21,283 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2023-02-18 22:04:21,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,284 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2023-02-18 22:04:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 22:04:21,284 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:21,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:21,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 22:04:21,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:21,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:21,285 INFO L85 PathProgramCache]: Analyzing trace with hash -763066913, now seen corresponding path program 1 times [2023-02-18 22:04:21,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:21,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143374389] [2023-02-18 22:04:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:21,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:21,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:21,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143374389] [2023-02-18 22:04:21,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143374389] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:04:21,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794921593] [2023-02-18 22:04:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:21,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:21,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:04:21,369 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) [2023-02-18 22:04:21,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 22:04:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:21,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 22:04:21,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:04:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:21,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:04:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:21,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794921593] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:04:21,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:04:21,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-02-18 22:04:21,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99523814] [2023-02-18 22:04:21,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:04:21,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 22:04:21,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 22:04:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-18 22:04:21,539 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:21,558 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2023-02-18 22:04:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 22:04:21,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 22:04:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:21,560 INFO L225 Difference]: With dead ends: 90 [2023-02-18 22:04:21,560 INFO L226 Difference]: Without dead ends: 90 [2023-02-18 22:04:21,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-18 22:04:21,561 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:21,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 177 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:04:21,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-18 22:04:21,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-02-18 22:04:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.7272727272727273) internal successors, (95), 89 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2023-02-18 22:04:21,571 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 14 [2023-02-18 22:04:21,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:21,574 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2023-02-18 22:04:21,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2023-02-18 22:04:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 22:04:21,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:21,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:21,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 22:04:21,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:21,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:21,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949021, now seen corresponding path program 1 times [2023-02-18 22:04:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:21,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922913451] [2023-02-18 22:04:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:21,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:21,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922913451] [2023-02-18 22:04:21,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922913451] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:04:21,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927466586] [2023-02-18 22:04:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:21,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:21,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:04:21,901 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) [2023-02-18 22:04:21,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 22:04:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:21,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 22:04:21,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:04:22,023 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 [2023-02-18 22:04:22,042 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:04:22,043 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 [2023-02-18 22:04:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:22,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:04:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:22,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927466586] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:04:22,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:04:22,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2023-02-18 22:04:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119365738] [2023-02-18 22:04:22,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:04:22,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 22:04:22,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 22:04:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-18 22:04:22,147 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:22,254 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2023-02-18 22:04:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 22:04:22,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 22:04:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:22,258 INFO L225 Difference]: With dead ends: 101 [2023-02-18 22:04:22,259 INFO L226 Difference]: Without dead ends: 101 [2023-02-18 22:04:22,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 22:04:22,262 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 147 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:22,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 85 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-18 22:04:22,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2023-02-18 22:04:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.709090909090909) internal successors, (94), 88 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:22,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2023-02-18 22:04:22,280 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 16 [2023-02-18 22:04:22,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:22,281 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2023-02-18 22:04:22,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:22,281 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2023-02-18 22:04:22,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 22:04:22,282 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:22,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:22,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 22:04:22,489 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,SelfDestructingSolverStorable5 [2023-02-18 22:04:22,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:22,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949020, now seen corresponding path program 1 times [2023-02-18 22:04:22,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:22,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118047613] [2023-02-18 22:04:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:22,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:22,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:22,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118047613] [2023-02-18 22:04:22,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118047613] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:04:22,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787539949] [2023-02-18 22:04:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:22,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:22,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:04:22,672 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) [2023-02-18 22:04:22,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 22:04:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:22,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 22:04:22,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:04:22,789 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 [2023-02-18 22:04:22,792 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 [2023-02-18 22:04:22,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:22,819 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 [2023-02-18 22:04:22,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:04:22,823 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 [2023-02-18 22:04:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:22,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:04:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:22,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787539949] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:04:22,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:04:22,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-02-18 22:04:22,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167234785] [2023-02-18 22:04:22,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:04:22,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 22:04:22,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:22,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 22:04:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 22:04:22,921 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:23,072 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2023-02-18 22:04:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 22:04:23,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 22:04:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:23,075 INFO L225 Difference]: With dead ends: 100 [2023-02-18 22:04:23,075 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 22:04:23,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-02-18 22:04:23,078 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 345 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:23,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 59 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:23,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 22:04:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2023-02-18 22:04:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 55 states have (on average 1.690909090909091) internal successors, (93), 87 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:23,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2023-02-18 22:04:23,088 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 16 [2023-02-18 22:04:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:23,088 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2023-02-18 22:04:23,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:23,088 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2023-02-18 22:04:23,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 22:04:23,089 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:23,089 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:23,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 22:04:23,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:23,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957328, now seen corresponding path program 2 times [2023-02-18 22:04:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:23,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776373925] [2023-02-18 22:04:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:23,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:23,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:23,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776373925] [2023-02-18 22:04:23,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776373925] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:04:23,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011927239] [2023-02-18 22:04:23,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 22:04:23,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:23,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:04:23,369 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) [2023-02-18 22:04:23,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 22:04:23,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 22:04:23,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 22:04:23,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 22:04:23,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:04:23,460 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 [2023-02-18 22:04:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 22:04:23,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:04:23,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011927239] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:23,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 22:04:23,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-02-18 22:04:23,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789125313] [2023-02-18 22:04:23,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:23,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:04:23,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:23,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:04:23,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 22:04:23,466 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:23,512 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2023-02-18 22:04:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:04:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 22:04:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:23,513 INFO L225 Difference]: With dead ends: 97 [2023-02-18 22:04:23,513 INFO L226 Difference]: Without dead ends: 97 [2023-02-18 22:04:23,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 22:04:23,514 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 64 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:23,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 63 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:04:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-18 22:04:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2023-02-18 22:04:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 55 states have (on average 1.6363636363636365) internal successors, (90), 84 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2023-02-18 22:04:23,517 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 21 [2023-02-18 22:04:23,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:23,517 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2023-02-18 22:04:23,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2023-02-18 22:04:23,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 22:04:23,521 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:23,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:23,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 22:04:23,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:23,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:23,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957327, now seen corresponding path program 1 times [2023-02-18 22:04:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:23,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092804305] [2023-02-18 22:04:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:23,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:23,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092804305] [2023-02-18 22:04:23,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092804305] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:04:23,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626831174] [2023-02-18 22:04:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:23,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:23,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:04:23,801 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) [2023-02-18 22:04:23,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 22:04:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:23,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 22:04:23,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:04:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:23,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:04:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:23,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626831174] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:04:23,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:04:23,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-02-18 22:04:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939801787] [2023-02-18 22:04:23,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:04:23,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 22:04:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 22:04:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 22:04:23,917 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:23,937 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2023-02-18 22:04:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 22:04:23,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 22:04:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:23,937 INFO L225 Difference]: With dead ends: 85 [2023-02-18 22:04:23,938 INFO L226 Difference]: Without dead ends: 85 [2023-02-18 22:04:23,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 22:04:23,938 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 147 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:23,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 78 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:04:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-18 22:04:23,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-18 22:04:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 55 states have (on average 1.6181818181818182) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2023-02-18 22:04:23,941 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 21 [2023-02-18 22:04:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:23,941 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2023-02-18 22:04:23,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2023-02-18 22:04:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 22:04:23,941 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:23,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:23,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 22:04:24,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:24,147 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2020822092, now seen corresponding path program 1 times [2023-02-18 22:04:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:24,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552352450] [2023-02-18 22:04:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:24,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 22:04:24,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:24,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552352450] [2023-02-18 22:04:24,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552352450] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:24,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:24,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 22:04:24,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28351431] [2023-02-18 22:04:24,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:24,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:04:24,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:24,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:04:24,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:04:24,241 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:24,281 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2023-02-18 22:04:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:04:24,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-18 22:04:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:24,282 INFO L225 Difference]: With dead ends: 82 [2023-02-18 22:04:24,282 INFO L226 Difference]: Without dead ends: 82 [2023-02-18 22:04:24,282 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 [2023-02-18 22:04:24,283 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 64 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:24,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 58 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:04:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-18 22:04:24,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-02-18 22:04:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2023-02-18 22:04:24,286 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 22 [2023-02-18 22:04:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:24,287 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2023-02-18 22:04:24,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2023-02-18 22:04:24,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 22:04:24,288 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:24,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:24,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 22:04:24,289 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:24,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:24,290 INFO L85 PathProgramCache]: Analyzing trace with hash 157247510, now seen corresponding path program 1 times [2023-02-18 22:04:24,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:24,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816606017] [2023-02-18 22:04:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:24,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:04:24,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:24,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816606017] [2023-02-18 22:04:24,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816606017] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:04:24,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271457498] [2023-02-18 22:04:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:24,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:24,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:04:24,582 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) [2023-02-18 22:04:24,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 22:04:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:24,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 22:04:24,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:04:24,709 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 [2023-02-18 22:04:24,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:24,719 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 17 treesize of output 17 [2023-02-18 22:04:24,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:04:24,732 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 17 treesize of output 31 [2023-02-18 22:04:24,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:24,748 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 17 treesize of output 17 [2023-02-18 22:04:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 22:04:24,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:04:24,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271457498] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:24,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 22:04:24,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-02-18 22:04:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890462219] [2023-02-18 22:04:24,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:24,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 22:04:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 22:04:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-18 22:04:24,786 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:24,856 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2023-02-18 22:04:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 22:04:24,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-18 22:04:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:24,857 INFO L225 Difference]: With dead ends: 88 [2023-02-18 22:04:24,857 INFO L226 Difference]: Without dead ends: 88 [2023-02-18 22:04:24,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 12 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-18 22:04:24,858 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 106 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:24,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 55 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:24,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-18 22:04:24,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2023-02-18 22:04:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2023-02-18 22:04:24,860 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 27 [2023-02-18 22:04:24,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:24,861 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2023-02-18 22:04:24,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2023-02-18 22:04:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 22:04:24,862 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:24,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:24,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 22:04:25,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:25,068 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash 157247511, now seen corresponding path program 1 times [2023-02-18 22:04:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:25,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340976673] [2023-02-18 22:04:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:04:25,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:25,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340976673] [2023-02-18 22:04:25,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340976673] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:04:25,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430192216] [2023-02-18 22:04:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:25,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:25,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:04:25,450 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) [2023-02-18 22:04:25,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 22:04:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:25,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 22:04:25,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:04:25,584 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 [2023-02-18 22:04:25,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:25,596 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 [2023-02-18 22:04:25,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:25,604 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 [2023-02-18 22:04:25,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:25,614 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 [2023-02-18 22:04:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 22:04:25,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:04:25,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430192216] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:25,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 22:04:25,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-02-18 22:04:25,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841574646] [2023-02-18 22:04:25,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:25,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 22:04:25,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:25,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 22:04:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-02-18 22:04:25,625 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:25,671 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2023-02-18 22:04:25,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 22:04:25,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-18 22:04:25,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:25,672 INFO L225 Difference]: With dead ends: 70 [2023-02-18 22:04:25,672 INFO L226 Difference]: Without dead ends: 70 [2023-02-18 22:04:25,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-02-18 22:04:25,673 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 98 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:25,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 46 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:04:25,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-18 22:04:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-02-18 22:04:25,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2023-02-18 22:04:25,675 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 27 [2023-02-18 22:04:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:25,675 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2023-02-18 22:04:25,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2023-02-18 22:04:25,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 22:04:25,676 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:25,676 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:25,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 22:04:25,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:25,881 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash 579705555, now seen corresponding path program 1 times [2023-02-18 22:04:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:25,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521116504] [2023-02-18 22:04:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:25,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 22:04:25,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:25,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521116504] [2023-02-18 22:04:25,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521116504] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:25,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:25,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 22:04:25,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146075178] [2023-02-18 22:04:25,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:25,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 22:04:25,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:25,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 22:04:25,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 22:04:25,946 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:26,012 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2023-02-18 22:04:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 22:04:26,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 22:04:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:26,013 INFO L225 Difference]: With dead ends: 81 [2023-02-18 22:04:26,013 INFO L226 Difference]: Without dead ends: 81 [2023-02-18 22:04:26,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 22:04:26,014 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 132 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:26,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 83 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-18 22:04:26,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2023-02-18 22:04:26,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2023-02-18 22:04:26,016 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 28 [2023-02-18 22:04:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:26,016 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2023-02-18 22:04:26,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2023-02-18 22:04:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 22:04:26,017 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:26,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:26,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 22:04:26,017 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash 579705556, now seen corresponding path program 1 times [2023-02-18 22:04:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:26,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858908629] [2023-02-18 22:04:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:26,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 22:04:26,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:26,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858908629] [2023-02-18 22:04:26,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858908629] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:26,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:26,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 22:04:26,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542918329] [2023-02-18 22:04:26,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:26,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 22:04:26,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:26,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 22:04:26,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 22:04:26,125 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:26,173 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2023-02-18 22:04:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 22:04:26,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 22:04:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:26,174 INFO L225 Difference]: With dead ends: 68 [2023-02-18 22:04:26,174 INFO L226 Difference]: Without dead ends: 68 [2023-02-18 22:04:26,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 22:04:26,175 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 137 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:26,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 62 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:04:26,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-18 22:04:26,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-02-18 22:04:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.309090909090909) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-02-18 22:04:26,177 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 28 [2023-02-18 22:04:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:26,177 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-02-18 22:04:26,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:26,177 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-02-18 22:04:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 22:04:26,178 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:26,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:26,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 22:04:26,178 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558015, now seen corresponding path program 1 times [2023-02-18 22:04:26,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:26,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890737004] [2023-02-18 22:04:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:26,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 22:04:26,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:26,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890737004] [2023-02-18 22:04:26,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890737004] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:26,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:26,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 22:04:26,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536241749] [2023-02-18 22:04:26,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:26,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 22:04:26,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 22:04:26,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-18 22:04:26,452 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:26,637 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2023-02-18 22:04:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 22:04:26,638 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-18 22:04:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:26,638 INFO L225 Difference]: With dead ends: 80 [2023-02-18 22:04:26,638 INFO L226 Difference]: Without dead ends: 80 [2023-02-18 22:04:26,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-02-18 22:04:26,639 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 196 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:26,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 139 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-18 22:04:26,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2023-02-18 22:04:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.290909090909091) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2023-02-18 22:04:26,641 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 33 [2023-02-18 22:04:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:26,641 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2023-02-18 22:04:26,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2023-02-18 22:04:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 22:04:26,642 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:26,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:26,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-18 22:04:26,642 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558014, now seen corresponding path program 1 times [2023-02-18 22:04:26,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:26,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947885406] [2023-02-18 22:04:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:26,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:04:27,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:27,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947885406] [2023-02-18 22:04:27,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947885406] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:27,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:27,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 22:04:27,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176311851] [2023-02-18 22:04:27,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:27,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 22:04:27,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 22:04:27,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-18 22:04:27,103 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:27,291 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2023-02-18 22:04:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 22:04:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-18 22:04:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:27,292 INFO L225 Difference]: With dead ends: 67 [2023-02-18 22:04:27,292 INFO L226 Difference]: Without dead ends: 67 [2023-02-18 22:04:27,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-02-18 22:04:27,293 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 176 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:27,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 137 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-18 22:04:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2023-02-18 22:04:27,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2023-02-18 22:04:27,295 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 33 [2023-02-18 22:04:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:27,295 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2023-02-18 22:04:27,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2023-02-18 22:04:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 22:04:27,295 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:27,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:27,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-18 22:04:27,296 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:27,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1306141903, now seen corresponding path program 1 times [2023-02-18 22:04:27,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:27,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103225497] [2023-02-18 22:04:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:27,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 22:04:27,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:27,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103225497] [2023-02-18 22:04:27,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103225497] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:27,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:27,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 22:04:27,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053368421] [2023-02-18 22:04:27,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:27,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 22:04:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:27,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 22:04:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 22:04:27,465 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:27,583 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2023-02-18 22:04:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 22:04:27,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-18 22:04:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:27,584 INFO L225 Difference]: With dead ends: 97 [2023-02-18 22:04:27,584 INFO L226 Difference]: Without dead ends: 97 [2023-02-18 22:04:27,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-02-18 22:04:27,585 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 315 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:27,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 139 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-18 22:04:27,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 67. [2023-02-18 22:04:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 57 states have (on average 1.280701754385965) internal successors, (73), 66 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2023-02-18 22:04:27,588 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 37 [2023-02-18 22:04:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:27,588 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2023-02-18 22:04:27,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2023-02-18 22:04:27,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 22:04:27,589 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:27,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:27,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-18 22:04:27,589 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:27,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1306141904, now seen corresponding path program 1 times [2023-02-18 22:04:27,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:27,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271070701] [2023-02-18 22:04:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:27,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 22:04:27,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:27,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271070701] [2023-02-18 22:04:27,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271070701] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:27,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:27,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 22:04:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653624720] [2023-02-18 22:04:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:27,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 22:04:27,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 22:04:27,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-18 22:04:27,905 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:28,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:28,019 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2023-02-18 22:04:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 22:04:28,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-18 22:04:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:28,020 INFO L225 Difference]: With dead ends: 89 [2023-02-18 22:04:28,020 INFO L226 Difference]: Without dead ends: 89 [2023-02-18 22:04:28,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-02-18 22:04:28,021 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 267 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:28,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 128 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:28,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-18 22:04:28,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2023-02-18 22:04:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 68 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2023-02-18 22:04:28,022 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 37 [2023-02-18 22:04:28,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:28,023 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2023-02-18 22:04:28,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2023-02-18 22:04:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 22:04:28,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:28,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:28,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-18 22:04:28,024 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:28,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1835692060, now seen corresponding path program 1 times [2023-02-18 22:04:28,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:28,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105983325] [2023-02-18 22:04:28,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:28,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 22:04:28,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:28,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105983325] [2023-02-18 22:04:28,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105983325] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:28,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:28,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 22:04:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905071323] [2023-02-18 22:04:28,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:28,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 22:04:28,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 22:04:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-18 22:04:28,195 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:28,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:28,271 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2023-02-18 22:04:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 22:04:28,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-18 22:04:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:28,272 INFO L225 Difference]: With dead ends: 72 [2023-02-18 22:04:28,272 INFO L226 Difference]: Without dead ends: 72 [2023-02-18 22:04:28,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-02-18 22:04:28,273 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 181 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:28,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 171 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:28,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-02-18 22:04:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2023-02-18 22:04:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2023-02-18 22:04:28,275 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 38 [2023-02-18 22:04:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:28,275 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2023-02-18 22:04:28,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:28,275 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2023-02-18 22:04:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-18 22:04:28,276 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:28,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:28,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-18 22:04:28,276 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:28,277 INFO L85 PathProgramCache]: Analyzing trace with hash -676090250, now seen corresponding path program 1 times [2023-02-18 22:04:28,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:28,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977198520] [2023-02-18 22:04:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:28,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:04:28,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:28,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977198520] [2023-02-18 22:04:28,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977198520] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:28,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:28,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 22:04:28,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565836528] [2023-02-18 22:04:28,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:28,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 22:04:28,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:28,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 22:04:28,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-18 22:04:28,521 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:28,674 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2023-02-18 22:04:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 22:04:28,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-02-18 22:04:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:28,675 INFO L225 Difference]: With dead ends: 69 [2023-02-18 22:04:28,675 INFO L226 Difference]: Without dead ends: 69 [2023-02-18 22:04:28,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-02-18 22:04:28,676 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 213 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:28,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 185 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:04:28,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-18 22:04:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-02-18 22:04:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2023-02-18 22:04:28,678 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 41 [2023-02-18 22:04:28,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:28,678 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2023-02-18 22:04:28,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2023-02-18 22:04:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-18 22:04:28,678 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:28,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:28,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-18 22:04:28,679 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:28,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2066036839, now seen corresponding path program 1 times [2023-02-18 22:04:28,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:28,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275978775] [2023-02-18 22:04:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:28,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 22:04:29,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:29,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275978775] [2023-02-18 22:04:29,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275978775] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:04:29,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:04:29,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-02-18 22:04:29,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245816115] [2023-02-18 22:04:29,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:04:29,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 22:04:29,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:04:29,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 22:04:29,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-02-18 22:04:29,378 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:04:29,855 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2023-02-18 22:04:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 22:04:29,856 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-02-18 22:04:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:04:29,857 INFO L225 Difference]: With dead ends: 82 [2023-02-18 22:04:29,857 INFO L226 Difference]: Without dead ends: 82 [2023-02-18 22:04:29,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2023-02-18 22:04:29,858 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 329 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 22:04:29,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 212 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 22:04:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-18 22:04:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2023-02-18 22:04:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2023-02-18 22:04:29,859 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 44 [2023-02-18 22:04:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:04:29,860 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2023-02-18 22:04:29,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:04:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2023-02-18 22:04:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 22:04:29,860 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:04:29,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:04:29,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-18 22:04:29,860 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2023-02-18 22:04:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:04:29,861 INFO L85 PathProgramCache]: Analyzing trace with hash -377366918, now seen corresponding path program 1 times [2023-02-18 22:04:29,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:04:29,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713445354] [2023-02-18 22:04:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:29,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:04:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 22:04:30,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:04:30,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713445354] [2023-02-18 22:04:30,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713445354] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:04:30,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644220224] [2023-02-18 22:04:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:04:30,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:04:30,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:04:30,789 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) [2023-02-18 22:04:30,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 22:04:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:04:30,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 100 conjunts are in the unsatisfiable core [2023-02-18 22:04:30,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:04:31,009 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 [2023-02-18 22:04:31,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:04:31,082 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 [2023-02-18 22:04:31,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,113 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 21 [2023-02-18 22:04:31,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 22:04:31,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2023-02-18 22:04:31,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-18 22:04:31,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2023-02-18 22:04:31,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 22:04:31,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,324 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 22:04:31,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2023-02-18 22:04:31,330 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 22:04:31,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-02-18 22:04:31,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,417 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:04:31,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 88 [2023-02-18 22:04:31,424 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 8 treesize of output 7 [2023-02-18 22:04:31,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-02-18 22:04:31,459 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 71 [2023-02-18 22:04:31,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 22:04:31,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:04:31,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 169 treesize of output 170 [2023-02-18 22:04:31,583 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 0 case distinctions, treesize of input 111 treesize of output 87 [2023-02-18 22:04:31,590 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 28 [2023-02-18 22:04:31,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 1 [2023-02-18 22:04:31,620 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 0 case distinctions, treesize of input 87 treesize of output 69 [2023-02-18 22:04:31,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 22:04:31,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 1 [2023-02-18 22:04:31,675 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 0 case distinctions, treesize of input 104 treesize of output 82 [2023-02-18 22:04:35,998 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:04:36,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 105 select indices, 105 select index equivalence classes, 0 disjoint index pairs (out of 5460 index pairs), introduced 151 new quantified variables, introduced 5460 case distinctions, treesize of input 4202 treesize of output 46782 [2023-02-18 22:05:17,576 INFO L217 Elim1Store]: Index analysis took 14722 ms [2023-02-18 22:05:17,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:05:17,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 37 select indices, 37 select index equivalence classes, 0 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 666 case distinctions, treesize of input 2846 treesize of output 9660