./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/forester-heap/sll-rb-cnstr_1-1.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 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:08:53,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:08:53,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:08:53,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:08:53,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:08:53,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:08:53,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:08:53,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:08:53,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:08:53,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:08:53,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:08:53,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:08:53,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:08:53,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:08:53,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:08:53,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:08:53,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:08:53,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:08:53,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:08:53,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:08:53,923 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:08:53,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:08:53,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:08:53,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:08:53,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:08:53,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:08:53,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:08:53,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:08:53,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:08:53,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:08:53,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:08:53,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:08:53,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:08:53,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:08:53,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:08:53,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:08:53,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:08:53,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:08:53,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:08:53,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:08:53,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:08:53,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:08:53,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:08:53,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:08:53,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:08:53,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:08:53,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:08:53,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:08:53,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:08:53,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:08:53,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:08:53,962 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:08:53,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:08:53,963 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:08:53,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:08:53,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:08:53,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:08:53,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:08:53,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:08:53,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:08:53,964 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:08:53,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:08:53,965 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:08:53,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:08:53,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:08:53,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:08:53,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:08:53,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:08:53,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:08:53,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:08:53,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:08:53,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:08:53,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:08:53,966 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:08:53,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:08:53,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:08:53,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b [2022-07-21 02:08:54,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:08:54,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:08:54,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:08:54,246 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:08:54,247 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:08:54,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2022-07-21 02:08:54,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50298bfa/ef6590a64e7a4c0ba4be5f761e63a14c/FLAG94852d067 [2022-07-21 02:08:54,674 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:08:54,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2022-07-21 02:08:54,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50298bfa/ef6590a64e7a4c0ba4be5f761e63a14c/FLAG94852d067 [2022-07-21 02:08:54,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50298bfa/ef6590a64e7a4c0ba4be5f761e63a14c [2022-07-21 02:08:54,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:08:54,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:08:54,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:08:54,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:08:54,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:08:54,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:08:54" (1/1) ... [2022-07-21 02:08:54,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb4c39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:54, skipping insertion in model container [2022-07-21 02:08:54,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:08:54" (1/1) ... [2022-07-21 02:08:54,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:08:54,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:08:54,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2022-07-21 02:08:54,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2022-07-21 02:08:54,998 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2022-07-21 02:08:54,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2022-07-21 02:08:55,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:08:55,010 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:08:55,046 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2022-07-21 02:08:55,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2022-07-21 02:08:55,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2022-07-21 02:08:55,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2022-07-21 02:08:55,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:08:55,073 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:08:55,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55 WrapperNode [2022-07-21 02:08:55,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:08:55,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:08:55,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:08:55,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:08:55,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,124 INFO L137 Inliner]: procedures = 119, calls = 32, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2022-07-21 02:08:55,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:08:55,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:08:55,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:08:55,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:08:55,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:08:55,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:08:55,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:08:55,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:08:55,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (1/1) ... [2022-07-21 02:08:55,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:08:55,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:08:55,199 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) [2022-07-21 02:08:55,214 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 [2022-07-21 02:08:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 02:08:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 02:08:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 02:08:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:08:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 02:08:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 02:08:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 02:08:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:08:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:08:55,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:08:55,297 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:08:55,299 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:08:55,422 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:08:55,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:08:55,426 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-21 02:08:55,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:08:55 BoogieIcfgContainer [2022-07-21 02:08:55,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:08:55,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:08:55,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:08:55,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:08:55,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:08:54" (1/3) ... [2022-07-21 02:08:55,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e3095a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:08:55, skipping insertion in model container [2022-07-21 02:08:55,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:55" (2/3) ... [2022-07-21 02:08:55,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e3095a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:08:55, skipping insertion in model container [2022-07-21 02:08:55,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:08:55" (3/3) ... [2022-07-21 02:08:55,433 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2022-07-21 02:08:55,442 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:08:55,442 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-21 02:08:55,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:08:55,487 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19a9c52f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43fbb58d [2022-07-21 02:08:55,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 02:08:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 02:08:55,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:08:55,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 02:08:55,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:08:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:08:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2022-07-21 02:08:55,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:08:55,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246791452] [2022-07-21 02:08:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:08:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:55,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:08:55,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246791452] [2022-07-21 02:08:55,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246791452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:08:55,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:08:55,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:08:55,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841079157] [2022-07-21 02:08:55,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:08:55,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:08:55,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:08:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:08:55,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:08:55,680 INFO L87 Difference]: Start difference. First operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:08:55,690 INFO L93 Difference]: Finished difference Result 61 states and 98 transitions. [2022-07-21 02:08:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:08:55,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-21 02:08:55,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:08:55,696 INFO L225 Difference]: With dead ends: 61 [2022-07-21 02:08:55,696 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 02:08:55,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:08:55,700 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:08:55,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:08:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 02:08:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-21 02:08:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-07-21 02:08:55,720 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 6 [2022-07-21 02:08:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:08:55,720 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-07-21 02:08:55,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,720 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-07-21 02:08:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 02:08:55,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:08:55,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:08:55,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:08:55,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:08:55,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:08:55,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2022-07-21 02:08:55,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:08:55,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766365787] [2022-07-21 02:08:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:55,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:08:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:55,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:08:55,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766365787] [2022-07-21 02:08:55,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766365787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:08:55,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:08:55,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 02:08:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087865176] [2022-07-21 02:08:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:08:55,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 02:08:55,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:08:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 02:08:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 02:08:55,769 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:08:55,801 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-21 02:08:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 02:08:55,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 02:08:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:08:55,802 INFO L225 Difference]: With dead ends: 30 [2022-07-21 02:08:55,802 INFO L226 Difference]: Without dead ends: 28 [2022-07-21 02:08:55,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:08:55,803 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:08:55,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:08:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-21 02:08:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-07-21 02:08:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-21 02:08:55,807 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 7 [2022-07-21 02:08:55,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:08:55,807 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-21 02:08:55,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-21 02:08:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 02:08:55,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:08:55,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:08:55,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:08:55,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:08:55,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:08:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2022-07-21 02:08:55,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:08:55,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813815404] [2022-07-21 02:08:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:55,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:08:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:55,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:08:55,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813815404] [2022-07-21 02:08:55,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813815404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:08:55,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:08:55,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 02:08:55,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482690418] [2022-07-21 02:08:55,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:08:55,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 02:08:55,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:08:55,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 02:08:55,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:08:55,925 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:08:55,981 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-07-21 02:08:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 02:08:55,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 02:08:55,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:08:55,983 INFO L225 Difference]: With dead ends: 50 [2022-07-21 02:08:55,983 INFO L226 Difference]: Without dead ends: 48 [2022-07-21 02:08:55,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 02:08:55,984 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:08:55,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 67 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:08:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-21 02:08:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2022-07-21 02:08:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-07-21 02:08:55,989 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 10 [2022-07-21 02:08:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:08:55,989 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-07-21 02:08:55,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-07-21 02:08:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 02:08:55,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:08:55,990 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:08:55,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 02:08:55,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:08:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:08:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2022-07-21 02:08:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:08:55,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352317558] [2022-07-21 02:08:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:55,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:08:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:56,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:08:56,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352317558] [2022-07-21 02:08:56,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352317558] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:08:56,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17073585] [2022-07-21 02:08:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:56,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:08:56,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:08:56,215 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) [2022-07-21 02:08:56,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 02:08:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:56,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-21 02:08:56,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:08:56,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:08:56,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:08:56,437 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 02:08:56,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:08:56,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:08:56,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 24 treesize of output 26 [2022-07-21 02:08:56,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 02:08:56,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:08:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:08:56,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 23 [2022-07-21 02:08:56,559 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-21 02:08:56,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 02:08:56,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 02:08:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:56,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:08:56,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:08:56,730 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-07-21 02:08:56,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2022-07-21 02:08:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:56,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17073585] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:08:56,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:08:56,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-21 02:08:56,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110488772] [2022-07-21 02:08:56,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:08:56,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 02:08:56,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:08:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 02:08:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-21 02:08:56,736 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:56,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:08:56,883 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-07-21 02:08:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 02:08:56,883 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-21 02:08:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:08:56,884 INFO L225 Difference]: With dead ends: 38 [2022-07-21 02:08:56,884 INFO L226 Difference]: Without dead ends: 36 [2022-07-21 02:08:56,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-07-21 02:08:56,885 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:08:56,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 68 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 57 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-07-21 02:08:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-21 02:08:56,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2022-07-21 02:08:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-21 02:08:56,888 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2022-07-21 02:08:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:08:56,889 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-21 02:08:56,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-21 02:08:56,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 02:08:56,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:08:56,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:08:56,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 02:08:57,107 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 [2022-07-21 02:08:57,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:08:57,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:08:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1689639521, now seen corresponding path program 1 times [2022-07-21 02:08:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:08:57,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746427694] [2022-07-21 02:08:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:57,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:08:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:08:57,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746427694] [2022-07-21 02:08:57,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746427694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:08:57,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:08:57,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 02:08:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124114834] [2022-07-21 02:08:57,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:08:57,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 02:08:57,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:08:57,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 02:08:57,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:08:57,168 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:57,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:08:57,207 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-07-21 02:08:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 02:08:57,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-21 02:08:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:08:57,208 INFO L225 Difference]: With dead ends: 38 [2022-07-21 02:08:57,208 INFO L226 Difference]: Without dead ends: 26 [2022-07-21 02:08:57,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 02:08:57,211 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:08:57,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:08:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-21 02:08:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-21 02:08:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-21 02:08:57,223 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2022-07-21 02:08:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:08:57,223 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-21 02:08:57,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-21 02:08:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 02:08:57,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:08:57,225 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:08:57,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 02:08:57,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:08:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:08:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2084817261, now seen corresponding path program 1 times [2022-07-21 02:08:57,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:08:57,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255854993] [2022-07-21 02:08:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:57,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:08:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:57,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:08:57,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255854993] [2022-07-21 02:08:57,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255854993] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:08:57,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437583345] [2022-07-21 02:08:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:57,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:08:57,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:08:57,289 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) [2022-07-21 02:08:57,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 02:08:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:57,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 02:08:57,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:08:57,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:08:57,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-21 02:08:57,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:08:57,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-21 02:08:57,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 02:08:57,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 02:08:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:57,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:08:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:57,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437583345] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:08:57,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:08:57,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-07-21 02:08:57,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559391914] [2022-07-21 02:08:57,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:08:57,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 02:08:57,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:08:57,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 02:08:57,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 02:08:57,455 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:57,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:08:57,523 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-07-21 02:08:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 02:08:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-21 02:08:57,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:08:57,524 INFO L225 Difference]: With dead ends: 49 [2022-07-21 02:08:57,524 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 02:08:57,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-21 02:08:57,525 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:08:57,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 90 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:08:57,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 02:08:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-21 02:08:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-07-21 02:08:57,528 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2022-07-21 02:08:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:08:57,528 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-07-21 02:08:57,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:08:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-07-21 02:08:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 02:08:57,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:08:57,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:08:57,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 02:08:57,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 02:08:57,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:08:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:08:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1088473273, now seen corresponding path program 1 times [2022-07-21 02:08:57,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:08:57,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50206870] [2022-07-21 02:08:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:57,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:08:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:57,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:08:57,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50206870] [2022-07-21 02:08:57,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50206870] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:08:57,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986485716] [2022-07-21 02:08:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:08:57,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:08:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:08:57,884 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) [2022-07-21 02:08:57,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 02:08:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:08:57,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-21 02:08:57,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:08:57,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:08:58,009 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 02:08:58,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:08:58,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-21 02:08:58,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-21 02:08:58,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-21 02:08:58,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-21 02:08:58,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:08:58,065 INFO L356 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2022-07-21 02:08:58,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 47 treesize of output 48 [2022-07-21 02:08:58,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:08:58,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:08:58,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 25 [2022-07-21 02:08:58,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 11 [2022-07-21 02:08:58,086 INFO L356 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-07-21 02:08:58,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 38 [2022-07-21 02:08:58,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 02:08:58,226 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 02:08:58,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 23 [2022-07-21 02:08:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:08:58,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:08:58,251 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:08:58,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 40 treesize of output 41 [2022-07-21 02:08:58,260 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_5 (Array Int Int)) (v_ArrVal_328 (Array Int Int)) (v_ArrVal_329 (Array Int Int)) (v_ArrVal_335 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_5 |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (= .cse0 0) (not (= (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_5) .cse0 v_ArrVal_335))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_328) .cse0 v_ArrVal_329) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) 0)) (not (= (select |c_#valid| .cse0) 0))))) is different from false [2022-07-21 02:08:58,270 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:08:58,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 65 [2022-07-21 02:08:58,275 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:08:58,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2022-07-21 02:08:58,325 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:08:58,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 1524 treesize of output 1125 [2022-07-21 02:08:58,380 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:08:58,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1043 treesize of output 979 [2022-07-21 02:08:58,411 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:08:58,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 1093 treesize of output 919 [2022-07-21 02:08:58,454 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:08:58,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1098 treesize of output 1033 [2022-07-21 02:08:58,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1018 treesize of output 982 [2022-07-21 02:08:58,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 982 treesize of output 910 [2022-07-21 02:09:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:03,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986485716] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:09:03,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:09:03,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-07-21 02:09:03,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410705126] [2022-07-21 02:09:03,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:09:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 02:09:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:09:03,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 02:09:03,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2022-07-21 02:09:03,819 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:09:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:09:04,091 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2022-07-21 02:09:04,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 02:09:04,092 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-21 02:09:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:09:04,093 INFO L225 Difference]: With dead ends: 66 [2022-07-21 02:09:04,093 INFO L226 Difference]: Without dead ends: 64 [2022-07-21 02:09:04,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=379, Unknown=1, NotChecked=40, Total=506 [2022-07-21 02:09:04,094 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 02:09:04,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 170 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time] [2022-07-21 02:09:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-21 02:09:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2022-07-21 02:09:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:09:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-07-21 02:09:04,098 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 20 [2022-07-21 02:09:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:09:04,098 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-07-21 02:09:04,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:09:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-07-21 02:09:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 02:09:04,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:09:04,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:09:04,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 02:09:04,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:09:04,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:09:04,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:09:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -67404919, now seen corresponding path program 1 times [2022-07-21 02:09:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:09:04,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712616828] [2022-07-21 02:09:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:09:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:04,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:09:04,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712616828] [2022-07-21 02:09:04,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712616828] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:09:04,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431116235] [2022-07-21 02:09:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:04,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:09:04,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:09:04,510 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) [2022-07-21 02:09:04,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 02:09:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:04,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-21 02:09:04,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:09:04,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:09:04,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-21 02:09:04,605 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 02:09:04,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-21 02:09:04,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:09:04,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-21 02:09:04,627 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 02:09:04,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-21 02:09:04,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:09:04,649 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 02:09:04,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 02:09:04,674 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 02:09:04,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 50 treesize of output 47 [2022-07-21 02:09:04,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-21 02:09:04,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-21 02:09:04,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 02:09:04,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-21 02:09:04,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:09:04,863 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:04,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-07-21 02:09:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:04,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:09:04,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 82 treesize of output 62 [2022-07-21 02:09:04,989 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_418 (Array Int Int))) (= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_418) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4) (+ |c_ULTIMATE.start_main_~end~0#1.offset| 4))) (forall ((v_ArrVal_417 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_417) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) |c_ULTIMATE.start_main_~end~0#1.base|))) is different from false [2022-07-21 02:09:05,010 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:05,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-21 02:09:05,015 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:05,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 02:09:05,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-21 02:09:05,032 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 02:09:05,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 1 [2022-07-21 02:09:05,074 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:05,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-21 02:09:05,079 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:05,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 02:09:05,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-21 02:09:05,101 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 02:09:05,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 1 [2022-07-21 02:09:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:05,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431116235] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:09:05,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:09:05,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 22 [2022-07-21 02:09:05,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649660415] [2022-07-21 02:09:05,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:09:05,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 02:09:05,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:09:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 02:09:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=360, Unknown=5, NotChecked=38, Total=462 [2022-07-21 02:09:05,121 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:09:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:09:05,581 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2022-07-21 02:09:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 02:09:05,582 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-21 02:09:05,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:09:05,582 INFO L225 Difference]: With dead ends: 70 [2022-07-21 02:09:05,582 INFO L226 Difference]: Without dead ends: 58 [2022-07-21 02:09:05,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=619, Unknown=5, NotChecked=52, Total=812 [2022-07-21 02:09:05,583 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 02:09:05,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 245 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 213 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2022-07-21 02:09:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-07-21 02:09:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2022-07-21 02:09:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:09:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2022-07-21 02:09:05,587 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 20 [2022-07-21 02:09:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:09:05,587 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2022-07-21 02:09:05,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:09:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2022-07-21 02:09:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 02:09:05,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:09:05,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:09:05,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 02:09:05,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:09:05,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:09:05,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:09:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash 299800945, now seen corresponding path program 1 times [2022-07-21 02:09:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:09:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706130209] [2022-07-21 02:09:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:09:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:06,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:09:06,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706130209] [2022-07-21 02:09:06,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706130209] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:09:06,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610814734] [2022-07-21 02:09:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:06,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:09:06,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:09:06,003 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) [2022-07-21 02:09:06,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 02:09:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:06,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-21 02:09:06,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:09:06,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:09:06,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-21 02:09:06,184 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 02:09:06,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-21 02:09:06,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:09:06,212 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 02:09:06,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 02:09:06,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-21 02:09:06,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-21 02:09:06,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:06,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:06,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 48 [2022-07-21 02:09:06,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 23 [2022-07-21 02:09:06,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 15 [2022-07-21 02:09:06,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:06,317 INFO L356 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-07-21 02:09:06,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 53 treesize of output 54 [2022-07-21 02:09:06,345 INFO L356 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2022-07-21 02:09:06,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 46 [2022-07-21 02:09:06,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 15 [2022-07-21 02:09:06,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:09:06,528 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 02:09:06,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 100 treesize of output 47 [2022-07-21 02:09:06,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 36 treesize of output 19 [2022-07-21 02:09:06,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-21 02:09:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:06,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:09:06,612 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:06,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 95 [2022-07-21 02:09:06,617 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:06,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 88 [2022-07-21 02:09:06,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 259 treesize of output 181 [2022-07-21 02:09:06,641 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_17 (Array Int Int)) (v_arrayElimArr_18 (Array Int Int)) (v_ArrVal_551 (Array Int Int)) (v_ArrVal_550 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_18 |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (select |c_#valid| .cse0) 0)) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_17) .cse0 v_ArrVal_551)) (.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_18) .cse0 v_ArrVal_550))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (= (select (select .cse1 .cse2) .cse3) .cse0) (= (select v_arrayElimArr_17 |c_ULTIMATE.start_main_~end~0#1.offset|) (select (select .cse4 .cse2) .cse3)))))))) is different from false [2022-07-21 02:09:06,652 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:06,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 66 [2022-07-21 02:09:06,656 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:06,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 50 [2022-07-21 02:09:06,664 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:06,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 342 treesize of output 341 [2022-07-21 02:09:07,147 INFO L356 Elim1Store]: treesize reduction 294, result has 60.5 percent of original size [2022-07-21 02:09:07,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 4714 treesize of output 4643 [2022-07-21 02:09:07,279 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:07,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 4338 treesize of output 3988 [2022-07-21 02:09:07,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3950 treesize of output 3734 [2022-07-21 02:09:07,479 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:07,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 3782 treesize of output 3332