./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2n_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-simple/dll2n_append_unequal.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:05:26,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:05:26,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:05:26,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:05:26,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:05:26,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:05:26,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:05:26,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:05:26,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:05:26,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:05:26,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:05:26,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:05:26,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:05:26,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:05:26,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:05:26,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:05:26,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:05:26,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:05:26,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:05:26,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:05:26,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:05:26,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:05:26,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:05:26,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:05:26,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:05:26,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:05:26,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:05:26,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:05:26,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:05:26,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:05:26,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:05:26,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:05:26,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:05:26,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:05:26,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:05:26,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:05:26,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:05:26,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:05:26,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:05:26,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:05:26,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:05:26,529 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:05:26,556 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:05:26,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:05:26,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:05:26,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:05:26,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:05:26,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:05:26,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:05:26,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:05:26,564 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:05:26,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:05:26,565 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:05:26,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:05:26,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:05:26,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:05:26,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:05:26,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:05:26,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:05:26,566 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:05:26,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:05:26,567 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:05:26,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:05:26,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:05:26,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:05:26,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:05:26,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:05:26,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:05:26,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:05:26,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:05:26,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:05:26,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:05:26,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:05:26,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:05:26,570 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:05:26,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:05:26,570 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:05:26,570 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 [2023-02-16 01:05:26,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:05:26,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:05:26,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:05:26,866 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:05:26,866 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:05:26,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2023-02-16 01:05:27,991 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:05:28,222 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:05:28,223 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2023-02-16 01:05:28,238 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6df645fb/77a8000a7cba4834a6831dbd62fb36b3/FLAGe0448f2c5 [2023-02-16 01:05:28,253 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6df645fb/77a8000a7cba4834a6831dbd62fb36b3 [2023-02-16 01:05:28,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:05:28,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:05:28,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:05:28,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:05:28,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:05:28,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b269cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28, skipping insertion in model container [2023-02-16 01:05:28,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:05:28,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:05:28,585 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_append_unequal.i[24457,24470] [2023-02-16 01:05:28,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:05:28,605 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:05:28,668 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_append_unequal.i[24457,24470] [2023-02-16 01:05:28,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:05:28,725 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:05:28,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28 WrapperNode [2023-02-16 01:05:28,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:05:28,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:05:28,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:05:28,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:05:28,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,788 INFO L138 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 138 [2023-02-16 01:05:28,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:05:28,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:05:28,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:05:28,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:05:28,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,841 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:05:28,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:05:28,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:05:28,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:05:28,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (1/1) ... [2023-02-16 01:05:28,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:05:28,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:05:28,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 01:05:28,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 01:05:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 01:05:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 01:05:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-02-16 01:05:28,919 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-02-16 01:05:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 01:05:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:05:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 01:05:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 01:05:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 01:05:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 01:05:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 01:05:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:05:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:05:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:05:29,045 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:05:29,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:05:29,381 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:05:29,390 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:05:29,391 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-16 01:05:29,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:05:29 BoogieIcfgContainer [2023-02-16 01:05:29,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:05:29,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:05:29,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:05:29,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:05:29,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:05:28" (1/3) ... [2023-02-16 01:05:29,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39782d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:05:29, skipping insertion in model container [2023-02-16 01:05:29,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:05:28" (2/3) ... [2023-02-16 01:05:29,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39782d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:05:29, skipping insertion in model container [2023-02-16 01:05:29,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:05:29" (3/3) ... [2023-02-16 01:05:29,402 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.i [2023-02-16 01:05:29,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:05:29,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:05:29,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:05:29,476 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7947d562, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:05:29,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:05:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:05:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 01:05:29,487 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:05:29,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:05:29,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:05:29,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:05:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash -346371136, now seen corresponding path program 1 times [2023-02-16 01:05:29,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:05:29,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35299898] [2023-02-16 01:05:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:29,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:05:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 01:05:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:05:29,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:05:29,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35299898] [2023-02-16 01:05:29,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35299898] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:05:29,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:05:29,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:05:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481961195] [2023-02-16 01:05:29,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:05:29,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:05:29,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:05:29,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:05:29,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:05:29,828 INFO L87 Difference]: Start difference. First operand has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:05:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:05:29,917 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2023-02-16 01:05:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:05:29,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-16 01:05:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:05:29,925 INFO L225 Difference]: With dead ends: 65 [2023-02-16 01:05:29,925 INFO L226 Difference]: Without dead ends: 30 [2023-02-16 01:05:29,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:05:29,930 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:05:29,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:05:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-16 01:05:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-16 01:05:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:05:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2023-02-16 01:05:29,962 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2023-02-16 01:05:29,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:05:29,963 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2023-02-16 01:05:29,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:05:29,963 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2023-02-16 01:05:29,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 01:05:29,965 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:05:29,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:05:29,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:05:29,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:05:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:05:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1530291827, now seen corresponding path program 1 times [2023-02-16 01:05:29,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:05:29,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606085169] [2023-02-16 01:05:29,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:29,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:05:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:30,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 01:05:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:05:30,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:05:30,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606085169] [2023-02-16 01:05:30,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606085169] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:05:30,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:05:30,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:05:30,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120775099] [2023-02-16 01:05:30,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:05:30,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:05:30,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:05:30,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:05:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:05:30,216 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:05:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:05:30,287 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2023-02-16 01:05:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:05:30,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-16 01:05:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:05:30,289 INFO L225 Difference]: With dead ends: 58 [2023-02-16 01:05:30,290 INFO L226 Difference]: Without dead ends: 35 [2023-02-16 01:05:30,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:05:30,291 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:05:30,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 86 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:05:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-16 01:05:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-02-16 01:05:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:05:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-02-16 01:05:30,299 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 17 [2023-02-16 01:05:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:05:30,299 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-02-16 01:05:30,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:05:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-02-16 01:05:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 01:05:30,300 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:05:30,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:05:30,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 01:05:30,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:05:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:05:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash 878865159, now seen corresponding path program 1 times [2023-02-16 01:05:30,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:05:30,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583255092] [2023-02-16 01:05:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:30,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:05:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:05:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-16 01:05:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:05:30,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:05:30,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583255092] [2023-02-16 01:05:30,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583255092] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:05:30,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:05:30,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:05:30,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020534257] [2023-02-16 01:05:30,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:05:30,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:05:30,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:05:30,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:05:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:05:30,432 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:05:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:05:30,477 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2023-02-16 01:05:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:05:30,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-02-16 01:05:30,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:05:30,478 INFO L225 Difference]: With dead ends: 63 [2023-02-16 01:05:30,478 INFO L226 Difference]: Without dead ends: 35 [2023-02-16 01:05:30,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:05:30,480 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:05:30,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 85 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:05:30,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-16 01:05:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-02-16 01:05:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:05:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2023-02-16 01:05:30,487 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 27 [2023-02-16 01:05:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:05:30,487 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2023-02-16 01:05:30,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:05:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2023-02-16 01:05:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 01:05:30,488 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:05:30,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:05:30,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 01:05:30,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:05:30,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:05:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash -709482743, now seen corresponding path program 1 times [2023-02-16 01:05:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:05:30,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236759193] [2023-02-16 01:05:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:30,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:05:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:05:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-16 01:05:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:05:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:05:30,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236759193] [2023-02-16 01:05:30,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236759193] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:05:30,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708023066] [2023-02-16 01:05:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:30,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:05:30,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:05:30,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:05:30,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:05:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:30,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:05:30,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:05:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:05:30,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:05:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:05:30,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708023066] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:05:30,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:05:30,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2023-02-16 01:05:30,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018386222] [2023-02-16 01:05:30,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:05:30,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 01:05:30,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:05:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 01:05:30,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:05:30,880 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-16 01:05:30,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:05:30,927 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2023-02-16 01:05:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 01:05:30,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2023-02-16 01:05:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:05:30,928 INFO L225 Difference]: With dead ends: 59 [2023-02-16 01:05:30,928 INFO L226 Difference]: Without dead ends: 36 [2023-02-16 01:05:30,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:05:30,930 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:05:30,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 88 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:05:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-16 01:05:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-02-16 01:05:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:05:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2023-02-16 01:05:30,936 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 27 [2023-02-16 01:05:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:05:30,936 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2023-02-16 01:05:30,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-16 01:05:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2023-02-16 01:05:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-16 01:05:30,938 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:05:30,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:05:30,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 01:05:31,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:05:31,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:05:31,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:05:31,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1607276515, now seen corresponding path program 1 times [2023-02-16 01:05:31,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:05:31,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273623749] [2023-02-16 01:05:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:31,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:05:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:31,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:05:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 01:05:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:05:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:05:31,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:05:31,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273623749] [2023-02-16 01:05:31,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273623749] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:05:31,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377845400] [2023-02-16 01:05:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:31,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:05:31,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:05:31,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:05:31,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:05:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:31,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-16 01:05:31,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:05:32,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-16 01:05:32,313 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (exists ((v_ArrVal_520 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_520))))) is different from true [2023-02-16 01:05:32,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:32,343 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 24 treesize of output 24 [2023-02-16 01:05:32,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-02-16 01:05:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-02-16 01:05:32,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:05:32,496 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_523 (Array Int Int)) (|v_node_create_~temp~0#1.base_13| Int)) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_13| v_ArrVal_523) |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|))) (or (<= (+ .cse0 1) 0) (not (< |v_node_create_~temp~0#1.base_13| |c_#StackHeapBarrier|)) (<= 1 .cse0)))) is different from false [2023-02-16 01:05:32,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377845400] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:05:32,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:05:32,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2023-02-16 01:05:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629560951] [2023-02-16 01:05:32,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:05:32,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 01:05:32,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:05:32,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 01:05:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=525, Unknown=2, NotChecked=94, Total=702 [2023-02-16 01:05:32,503 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 19 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 01:05:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:05:32,964 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2023-02-16 01:05:32,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 01:05:32,965 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 19 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2023-02-16 01:05:32,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:05:32,966 INFO L225 Difference]: With dead ends: 64 [2023-02-16 01:05:32,966 INFO L226 Difference]: Without dead ends: 36 [2023-02-16 01:05:32,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=839, Unknown=2, NotChecked=122, Total=1122 [2023-02-16 01:05:32,967 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 144 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:05:32,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 197 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 201 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2023-02-16 01:05:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-16 01:05:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-02-16 01:05:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:05:32,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2023-02-16 01:05:32,973 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 37 [2023-02-16 01:05:32,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:05:32,973 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2023-02-16 01:05:32,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 19 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 01:05:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2023-02-16 01:05:32,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-16 01:05:32,975 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:05:32,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:05:32,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 01:05:33,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:05:33,182 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:05:33,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:05:33,183 INFO L85 PathProgramCache]: Analyzing trace with hash -859241559, now seen corresponding path program 1 times [2023-02-16 01:05:33,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:05:33,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874418531] [2023-02-16 01:05:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:33,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:05:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:05:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 01:05:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:05:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:05:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:05:34,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874418531] [2023-02-16 01:05:34,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874418531] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:05:34,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139623234] [2023-02-16 01:05:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:34,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:05:34,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:05:34,584 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:05:34,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:05:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:34,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 82 conjunts are in the unsatisfiable core [2023-02-16 01:05:34,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:05:34,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 01:05:35,071 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:05:35,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:05:35,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 01:05:35,213 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 01:05:35,213 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-02-16 01:05:35,503 INFO L321 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-02-16 01:05:35,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 29 [2023-02-16 01:05:35,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 01:05:35,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:35,667 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-16 01:05:35,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 80 [2023-02-16 01:05:35,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:35,683 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 66 treesize of output 64 [2023-02-16 01:05:35,702 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2023-02-16 01:05:35,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2023-02-16 01:05:36,017 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2023-02-16 01:05:36,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 69 [2023-02-16 01:05:36,060 INFO L321 Elim1Store]: treesize reduction 114, result has 15.6 percent of original size [2023-02-16 01:05:36,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 67 [2023-02-16 01:05:36,092 INFO L321 Elim1Store]: treesize reduction 62, result has 24.4 percent of original size [2023-02-16 01:05:36,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 121 [2023-02-16 01:05:36,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:36,103 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 73 treesize of output 71 [2023-02-16 01:05:36,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2023-02-16 01:05:36,171 INFO L321 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-02-16 01:05:36,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 24 [2023-02-16 01:05:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:05:36,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:05:36,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139623234] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:05:36,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:05:36,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 44 [2023-02-16 01:05:36,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276754503] [2023-02-16 01:05:36,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:05:36,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-16 01:05:36,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:05:36,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-16 01:05:36,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2284, Unknown=4, NotChecked=0, Total=2450 [2023-02-16 01:05:36,806 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 44 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 36 states have internal predecessors, (62), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 01:05:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:05:40,112 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2023-02-16 01:05:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-16 01:05:40,116 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 36 states have internal predecessors, (62), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2023-02-16 01:05:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:05:40,117 INFO L225 Difference]: With dead ends: 53 [2023-02-16 01:05:40,117 INFO L226 Difference]: Without dead ends: 42 [2023-02-16 01:05:40,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=529, Invalid=4297, Unknown=4, NotChecked=0, Total=4830 [2023-02-16 01:05:40,120 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 215 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 01:05:40,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 428 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 01:05:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-16 01:05:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2023-02-16 01:05:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:05:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-16 01:05:40,129 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 40 [2023-02-16 01:05:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:05:40,129 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-16 01:05:40,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 36 states have internal predecessors, (62), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 01:05:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-16 01:05:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 01:05:40,130 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:05:40,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-02-16 01:05:40,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:05:40,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:05:40,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:05:40,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:05:40,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1146227584, now seen corresponding path program 1 times [2023-02-16 01:05:40,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:05:40,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028944784] [2023-02-16 01:05:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:40,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:05:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:42,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:05:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:42,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 01:05:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:42,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:05:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:05:42,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:05:42,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028944784] [2023-02-16 01:05:42,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028944784] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:05:42,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466361197] [2023-02-16 01:05:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:42,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:05:42,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:05:42,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:05:42,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:05:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:43,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 147 conjunts are in the unsatisfiable core [2023-02-16 01:05:43,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:05:43,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 01:05:43,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-16 01:05:43,592 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:05:43,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:05:43,797 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 11 treesize of output 7 [2023-02-16 01:05:43,969 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-16 01:05:43,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-02-16 01:05:44,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:44,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-02-16 01:05:44,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 01:05:44,188 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 01:05:44,189 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-02-16 01:05:44,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-02-16 01:05:44,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:05:44,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 37 [2023-02-16 01:05:44,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-02-16 01:05:44,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2023-02-16 01:05:44,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:44,851 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-16 01:05:44,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 70 [2023-02-16 01:05:44,865 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-16 01:05:44,869 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 1 case distinctions, treesize of input 18 treesize of output 28 [2023-02-16 01:05:44,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-16 01:05:44,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:44,897 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-02-16 01:05:44,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 33 [2023-02-16 01:05:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:44,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 01:05:45,683 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:05:45,725 INFO L321 Elim1Store]: treesize reduction 135, result has 17.2 percent of original size [2023-02-16 01:05:45,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 210 treesize of output 108 [2023-02-16 01:05:45,759 INFO L321 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2023-02-16 01:05:45,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 274 treesize of output 165 [2023-02-16 01:05:45,782 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2023-02-16 01:05:45,782 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 163 [2023-02-16 01:05:45,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 47 [2023-02-16 01:05:45,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:45,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2023-02-16 01:05:45,941 INFO L321 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-02-16 01:05:45,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 55 [2023-02-16 01:05:45,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2023-02-16 01:05:46,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 01:05:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:05:46,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:05:46,906 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| Int) (v_ArrVal_1039 (Array Int Int)) (v_ArrVal_1035 (Array Int Int)) (v_ArrVal_1034 (Array Int Int)) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_10| Int) (v_ArrVal_1031 (Array Int Int)) (v_ArrVal_1052 (Array Int Int)) (v_ArrVal_1051 (Array Int Int)) (v_ArrVal_1050 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1050)) (.cse4 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1051))) (let ((.cse0 (select (select .cse1 (select (select .cse1 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (+ (select (select .cse4 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 4)))) (let ((.cse2 (select .cse1 .cse0)) (.cse3 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_10| 4))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16|))) (= (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1052) .cse0 v_ArrVal_1039) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1035) (select (select (store (store .cse1 .cse0 (store .cse2 .cse3 |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16|)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1031) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store .cse4 .cse0 (store (select .cse4 .cse0) .cse3 0)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1034) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_main_~data~0#1|) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| |c_#StackHeapBarrier|)) (not (= 0 (select .cse2 .cse3)))))))) is different from false [2023-02-16 01:05:46,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466361197] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:05:46,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:05:46,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2023-02-16 01:05:46,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870691907] [2023-02-16 01:05:46,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:05:46,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-16 01:05:46,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:05:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-16 01:05:46,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=3564, Unknown=39, NotChecked=120, Total=3906 [2023-02-16 01:05:46,912 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 56 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 47 states have internal predecessors, (74), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 01:05:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:05:53,171 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2023-02-16 01:05:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-16 01:05:53,181 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 47 states have internal predecessors, (74), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2023-02-16 01:05:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:05:53,184 INFO L225 Difference]: With dead ends: 65 [2023-02-16 01:05:53,185 INFO L226 Difference]: Without dead ends: 63 [2023-02-16 01:05:53,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=666, Invalid=6439, Unknown=39, NotChecked=166, Total=7310 [2023-02-16 01:05:53,188 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 524 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:05:53,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 444 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-16 01:05:53,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-16 01:05:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2023-02-16 01:05:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:05:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2023-02-16 01:05:53,213 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 44 [2023-02-16 01:05:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:05:53,213 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2023-02-16 01:05:53,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 47 states have internal predecessors, (74), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 01:05:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2023-02-16 01:05:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-16 01:05:53,214 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:05:53,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:05:53,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:05:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:05:53,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:05:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:05:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1173262244, now seen corresponding path program 1 times [2023-02-16 01:05:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:05:53,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436544566] [2023-02-16 01:05:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:53,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:05:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:53,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:05:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:53,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 01:05:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:53,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:05:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 01:05:53,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:05:53,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436544566] [2023-02-16 01:05:53,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436544566] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:05:53,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:05:53,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 01:05:53,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205346282] [2023-02-16 01:05:53,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:05:53,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 01:05:53,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:05:53,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 01:05:53,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:05:53,563 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 01:05:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:05:53,635 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2023-02-16 01:05:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:05:53,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-02-16 01:05:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:05:53,637 INFO L225 Difference]: With dead ends: 56 [2023-02-16 01:05:53,637 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 01:05:53,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-16 01:05:53,639 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:05:53,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 114 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:05:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 01:05:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2023-02-16 01:05:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:05:53,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2023-02-16 01:05:53,658 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 45 [2023-02-16 01:05:53,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:05:53,660 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2023-02-16 01:05:53,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 01:05:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2023-02-16 01:05:53,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 01:05:53,665 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:05:53,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:05:53,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 01:05:53,665 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:05:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:05:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash -731397669, now seen corresponding path program 2 times [2023-02-16 01:05:53,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:05:53,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833221325] [2023-02-16 01:05:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:05:53,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:05:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:05:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 01:05:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:05:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:05:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:05:57,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:05:57,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833221325] [2023-02-16 01:05:57,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833221325] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:05:57,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764626004] [2023-02-16 01:05:57,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:05:57,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:05:57,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:05:57,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:05:57,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:05:57,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:05:57,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:05:57,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 166 conjunts are in the unsatisfiable core [2023-02-16 01:05:57,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:05:57,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 01:05:57,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 01:05:58,110 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 01:05:58,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 01:05:58,141 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:05:58,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:05:58,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 01:05:58,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-02-16 01:05:58,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-02-16 01:05:58,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 01:05:58,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:58,408 INFO L321 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2023-02-16 01:05:58,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 59 [2023-02-16 01:05:58,417 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 22 treesize of output 24 [2023-02-16 01:05:58,422 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 20 treesize of output 22 [2023-02-16 01:05:58,790 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2023-02-16 01:05:58,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 52 [2023-02-16 01:05:58,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2023-02-16 01:05:58,806 INFO L321 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-02-16 01:05:58,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2023-02-16 01:05:58,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2023-02-16 01:05:59,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:59,042 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2023-02-16 01:05:59,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 118 treesize of output 110 [2023-02-16 01:05:59,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:59,051 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 22 treesize of output 24 [2023-02-16 01:05:59,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:59,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:59,060 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 01:05:59,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 98 [2023-02-16 01:05:59,085 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2023-02-16 01:05:59,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2023-02-16 01:05:59,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:00,053 INFO L321 Elim1Store]: treesize reduction 120, result has 23.6 percent of original size [2023-02-16 01:06:00,053 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 7 new quantified variables, introduced 11 case distinctions, treesize of input 323 treesize of output 228 [2023-02-16 01:06:00,093 INFO L321 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2023-02-16 01:06:00,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 292 treesize of output 177 [2023-02-16 01:06:00,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:00,124 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2023-02-16 01:06:00,125 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 273 treesize of output 228 [2023-02-16 01:06:00,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:00,145 INFO L321 Elim1Store]: treesize reduction 47, result has 48.9 percent of original size [2023-02-16 01:06:00,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 69 [2023-02-16 01:06:00,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:06:00,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:06:00,222 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:06:00,227 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-02-16 01:06:00,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 69 [2023-02-16 01:06:00,450 INFO L321 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2023-02-16 01:06:00,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 269 treesize of output 97 [2023-02-16 01:06:00,502 INFO L321 Elim1Store]: treesize reduction 3, result has 95.5 percent of original size [2023-02-16 01:06:00,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 107 [2023-02-16 01:06:00,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 01:06:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:06:00,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:06:00,707 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1459 (Array Int Int)) (v_ArrVal_1458 (Array Int Int)) (v_ArrVal_1457 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base| v_ArrVal_1457) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1459) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| v_ArrVal_1454) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1458) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4) |c_ULTIMATE.start_dll_append_~new_last~0#1.offset|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1453) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2023-02-16 01:06:01,630 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1459 (Array Int Int)) (v_ArrVal_1458 (Array Int Int)) (v_ArrVal_1457 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1472 (Array Int Int)) (|v_ULTIMATE.start_dll_append_#t~ret7#1.base_19| Int) (v_ArrVal_1471 (Array Int Int)) (v_ArrVal_1470 (Array Int Int)) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_14| Int)) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_19| v_ArrVal_1470)) (.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_19| v_ArrVal_1471))) (let ((.cse1 (let ((.cse4 (select (select .cse0 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (.cse5 (+ (select (select .cse3 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 4))) (select (select .cse0 (select (select .cse0 .cse4) .cse5)) (+ (select (select .cse3 .cse4) .cse5) 4)))) (.cse2 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_14| 4))) (or (not (= 0 (select (select .cse0 .cse1) .cse2))) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_19|))) (= (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_19| v_ArrVal_1472) .cse1 v_ArrVal_1457) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_19| v_ArrVal_1459) (select (select (store (store .cse0 .cse1 v_ArrVal_1454) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_19| v_ArrVal_1458) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store .cse3 .cse1 (store (select .cse3 .cse1) .cse2 0)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_19| v_ArrVal_1453) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_main_~data~0#1|) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_19| |c_#StackHeapBarrier|)))))) is different from false [2023-02-16 01:06:01,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764626004] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:06:01,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:06:01,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 57 [2023-02-16 01:06:01,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113467035] [2023-02-16 01:06:01,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:06:01,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-02-16 01:06:01,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:06:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-02-16 01:06:01,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3710, Unknown=7, NotChecked=246, Total=4160 [2023-02-16 01:06:01,635 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 57 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 48 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 01:06:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:06:15,808 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2023-02-16 01:06:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-16 01:06:15,809 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 48 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2023-02-16 01:06:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:06:15,810 INFO L225 Difference]: With dead ends: 116 [2023-02-16 01:06:15,810 INFO L226 Difference]: Without dead ends: 114 [2023-02-16 01:06:15,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 110 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2566 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=1034, Invalid=10957, Unknown=7, NotChecked=434, Total=12432 [2023-02-16 01:06:15,814 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 716 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-16 01:06:15,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 602 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-16 01:06:15,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-02-16 01:06:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 50. [2023-02-16 01:06:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:06:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-02-16 01:06:15,832 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 46 [2023-02-16 01:06:15,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:06:15,832 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-02-16 01:06:15,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 48 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 01:06:15,832 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-02-16 01:06:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-16 01:06:15,833 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:06:15,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:06:15,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 01:06:16,037 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 [2023-02-16 01:06:16,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:06:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:06:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2018358036, now seen corresponding path program 1 times [2023-02-16 01:06:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:06:16,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106937681] [2023-02-16 01:06:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:06:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:06:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:06:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:06:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:06:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 01:06:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:06:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:06:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:06:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:06:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:06:18,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106937681] [2023-02-16 01:06:18,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106937681] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:06:18,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648018443] [2023-02-16 01:06:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:06:18,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:06:18,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:06:18,590 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:06:18,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 01:06:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:06:18,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 185 conjunts are in the unsatisfiable core [2023-02-16 01:06:18,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:06:18,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 01:06:18,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-16 01:06:19,041 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:06:19,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:06:19,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 01:06:19,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 01:06:19,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:19,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-02-16 01:06:19,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2023-02-16 01:06:19,514 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 01:06:19,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 01:06:19,539 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-16 01:06:19,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-02-16 01:06:19,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 01:06:19,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 01:06:19,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-02-16 01:06:19,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 01:06:19,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 01:06:19,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-02-16 01:06:19,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 01:06:19,822 INFO L321 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2023-02-16 01:06:19,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 150 treesize of output 83 [2023-02-16 01:06:19,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2023-02-16 01:06:19,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-02-16 01:06:20,278 INFO L321 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2023-02-16 01:06:20,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 67 [2023-02-16 01:06:20,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2023-02-16 01:06:20,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:06:20,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2023-02-16 01:06:20,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:20,545 INFO L321 Elim1Store]: treesize reduction 215, result has 8.9 percent of original size [2023-02-16 01:06:20,545 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 200 treesize of output 115 [2023-02-16 01:06:20,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:20,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:20,580 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2023-02-16 01:06:20,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 166 [2023-02-16 01:06:20,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:20,605 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2023-02-16 01:06:20,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 39 [2023-02-16 01:06:20,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-16 01:06:21,276 INFO L321 Elim1Store]: treesize reduction 47, result has 48.9 percent of original size [2023-02-16 01:06:21,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 64 [2023-02-16 01:06:21,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:21,447 INFO L321 Elim1Store]: treesize reduction 288, result has 19.1 percent of original size [2023-02-16 01:06:21,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 252 treesize of output 155 [2023-02-16 01:06:21,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:06:21,523 INFO L321 Elim1Store]: treesize reduction 170, result has 22.7 percent of original size [2023-02-16 01:06:21,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 241 treesize of output 216 [2023-02-16 01:06:21,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2023-02-16 01:06:48,629 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 01:07:32,469 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 01:07:45,249 WARN L233 SmtUtils]: Spent 12.73s on a formula simplification. DAG size of input: 759 DAG size of output: 683 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-16 01:07:45,251 INFO L321 Elim1Store]: treesize reduction 198, result has 89.9 percent of original size [2023-02-16 01:07:45,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 1 disjoint index pairs (out of 153 index pairs), introduced 28 new quantified variables, introduced 153 case distinctions, treesize of input 1052 treesize of output 2136 [2023-02-16 01:07:46,138 INFO L217 Elim1Store]: Index analysis took 831 ms [2023-02-16 01:08:02,709 WARN L233 SmtUtils]: Spent 16.47s on a formula simplification. DAG size of input: 738 DAG size of output: 658 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-16 01:08:02,710 INFO L321 Elim1Store]: treesize reduction 202, result has 87.7 percent of original size [2023-02-16 01:08:02,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 1 disjoint index pairs (out of 153 index pairs), introduced 22 new quantified variables, introduced 152 case distinctions, treesize of input 1352 treesize of output 2438