./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-buckets-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/sll-buckets-2.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 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:58:28,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:58:28,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:58:28,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:58:28,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:58:28,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:58:28,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:58:28,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:58:28,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:58:28,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:58:28,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:58:28,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:58:28,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:58:28,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:58:28,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:58:28,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:58:28,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:58:28,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:58:28,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:58:28,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:58:28,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:58:28,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:58:28,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:58:28,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:58:28,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:58:28,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:58:28,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:58:28,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:58:28,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:58:28,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:58:28,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:58:28,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:58:28,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:58:28,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:58:28,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:58:28,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:58:28,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:58:28,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:58:28,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:58:28,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:58:28,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:58:28,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:58:28,169 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:58:28,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:58:28,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:58:28,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:58:28,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:58:28,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:58:28,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:58:28,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:58:28,173 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:58:28,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:58:28,174 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:58:28,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:58:28,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:58:28,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:58:28,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:58:28,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:58:28,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:58:28,175 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:58:28,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:58:28,175 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:58:28,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:58:28,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:58:28,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:58:28,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:58:28,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:58:28,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:58:28,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:58:28,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:58:28,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:58:28,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:58:28,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:58:28,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:58:28,178 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:58:28,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:58:28,178 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:58:28,178 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb [2023-02-16 00:58:28,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:58:28,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:58:28,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:58:28,375 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:58:28,376 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:58:28,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-buckets-2.i [2023-02-16 00:58:29,376 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:58:29,552 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:58:29,553 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i [2023-02-16 00:58:29,560 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62bafb60d/f07408fa8b6f4784b2eb883579344c2b/FLAG03e34d165 [2023-02-16 00:58:29,573 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62bafb60d/f07408fa8b6f4784b2eb883579344c2b [2023-02-16 00:58:29,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:58:29,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:58:29,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:58:29,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:58:29,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:58:29,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c4e3d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29, skipping insertion in model container [2023-02-16 00:58:29,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:58:29,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:58:29,781 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2023-02-16 00:58:29,785 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2023-02-16 00:58:29,786 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2023-02-16 00:58:29,788 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2023-02-16 00:58:29,788 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2023-02-16 00:58:29,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:58:29,797 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:58:29,835 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2023-02-16 00:58:29,836 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2023-02-16 00:58:29,837 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2023-02-16 00:58:29,840 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2023-02-16 00:58:29,840 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2023-02-16 00:58:29,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:58:29,899 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:58:29,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29 WrapperNode [2023-02-16 00:58:29,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:58:29,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:58:29,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:58:29,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:58:29,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,951 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 155 [2023-02-16 00:58:29,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:58:29,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:58:29,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:58:29,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:58:29,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,971 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:58:29,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:58:29,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:58:29,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:58:29,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (1/1) ... [2023-02-16 00:58:29,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:58:29,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:58:30,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 00:58:30,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 00:58:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:58:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:58:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 00:58:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:58:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 00:58:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 00:58:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:58:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:58:30,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:58:30,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:58:30,184 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:58:30,186 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:58:30,393 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:58:30,397 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:58:30,397 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2023-02-16 00:58:30,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:58:30 BoogieIcfgContainer [2023-02-16 00:58:30,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:58:30,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:58:30,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:58:30,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:58:30,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:58:29" (1/3) ... [2023-02-16 00:58:30,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba17996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:58:30, skipping insertion in model container [2023-02-16 00:58:30,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:58:29" (2/3) ... [2023-02-16 00:58:30,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba17996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:58:30, skipping insertion in model container [2023-02-16 00:58:30,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:58:30" (3/3) ... [2023-02-16 00:58:30,404 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2023-02-16 00:58:30,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:58:30,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-02-16 00:58:30,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:58:30,447 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d9ec028, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:58:30,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-02-16 00:58:30,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 38 states have (on average 1.868421052631579) internal successors, (71), 43 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 00:58:30,454 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:30,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:30,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash 179510098, now seen corresponding path program 1 times [2023-02-16 00:58:30,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:30,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561827977] [2023-02-16 00:58:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:30,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:30,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561827977] [2023-02-16 00:58:30,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561827977] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:58:30,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:58:30,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:58:30,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229521354] [2023-02-16 00:58:30,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:58:30,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:58:30,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:30,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:58:30,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:58:30,772 INFO L87 Difference]: Start difference. First operand has 44 states, 38 states have (on average 1.868421052631579) internal successors, (71), 43 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:30,826 INFO L93 Difference]: Finished difference Result 112 states and 188 transitions. [2023-02-16 00:58:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:58:30,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2023-02-16 00:58:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:30,849 INFO L225 Difference]: With dead ends: 112 [2023-02-16 00:58:30,849 INFO L226 Difference]: Without dead ends: 66 [2023-02-16 00:58:30,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:58:30,854 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 94 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:30,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 84 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:58:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-16 00:58:30,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2023-02-16 00:58:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-02-16 00:58:30,886 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 8 [2023-02-16 00:58:30,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:30,886 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-02-16 00:58:30,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-02-16 00:58:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 00:58:30,887 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:30,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:30,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:58:30,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:30,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1306111283, now seen corresponding path program 1 times [2023-02-16 00:58:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:30,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463065755] [2023-02-16 00:58:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:30,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:30,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463065755] [2023-02-16 00:58:30,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463065755] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:58:30,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:58:30,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:58:30,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535873817] [2023-02-16 00:58:30,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:58:30,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:58:30,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:31,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:58:31,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:58:31,000 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:31,036 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-02-16 00:58:31,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:58:31,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 00:58:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:31,038 INFO L225 Difference]: With dead ends: 45 [2023-02-16 00:58:31,038 INFO L226 Difference]: Without dead ends: 43 [2023-02-16 00:58:31,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:58:31,040 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:31,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:58:31,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-16 00:58:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2023-02-16 00:58:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2023-02-16 00:58:31,048 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 9 [2023-02-16 00:58:31,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:31,049 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2023-02-16 00:58:31,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2023-02-16 00:58:31,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 00:58:31,050 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:31,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:31,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 00:58:31,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1834780084, now seen corresponding path program 1 times [2023-02-16 00:58:31,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:31,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745929842] [2023-02-16 00:58:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:31,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:31,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:31,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745929842] [2023-02-16 00:58:31,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745929842] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:58:31,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:58:31,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:58:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178892128] [2023-02-16 00:58:31,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:58:31,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:58:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:58:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:58:31,656 INFO L87 Difference]: Start difference. First operand 39 states and 47 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) [2023-02-16 00:58:31,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:31,771 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2023-02-16 00:58:31,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 00:58:31,772 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 [2023-02-16 00:58:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:31,773 INFO L225 Difference]: With dead ends: 61 [2023-02-16 00:58:31,773 INFO L226 Difference]: Without dead ends: 50 [2023-02-16 00:58:31,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-16 00:58:31,774 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:31,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 94 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:58:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-16 00:58:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2023-02-16 00:58:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 43 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) [2023-02-16 00:58:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-02-16 00:58:31,780 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 10 [2023-02-16 00:58:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:31,780 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-02-16 00:58:31,780 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) [2023-02-16 00:58:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-02-16 00:58:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 00:58:31,781 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:31,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:31,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 00:58:31,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:31,782 INFO L85 PathProgramCache]: Analyzing trace with hash 710639734, now seen corresponding path program 1 times [2023-02-16 00:58:31,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:31,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492510471] [2023-02-16 00:58:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:31,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:31,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:31,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492510471] [2023-02-16 00:58:31,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492510471] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:58:31,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:58:31,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:58:31,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283504336] [2023-02-16 00:58:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:58:31,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:58:31,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:58:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:58:31,819 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-02-16 00:58:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:31,863 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-02-16 00:58:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:58:31,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2023-02-16 00:58:31,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:31,865 INFO L225 Difference]: With dead ends: 45 [2023-02-16 00:58:31,865 INFO L226 Difference]: Without dead ends: 43 [2023-02-16 00:58:31,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:58:31,870 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:31,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:58:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-16 00:58:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-02-16 00:58:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.275) internal successors, (51), 41 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) [2023-02-16 00:58:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-02-16 00:58:31,878 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 10 [2023-02-16 00:58:31,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:31,879 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-02-16 00:58:31,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-02-16 00:58:31,879 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-02-16 00:58:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 00:58:31,880 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:31,880 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:31,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 00:58:31,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash 625501225, now seen corresponding path program 1 times [2023-02-16 00:58:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:31,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128763689] [2023-02-16 00:58:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:31,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:32,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:32,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128763689] [2023-02-16 00:58:32,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128763689] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:58:32,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569984766] [2023-02-16 00:58:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:32,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:32,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:58:32,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:58:32,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:58:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:32,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 80 conjunts are in the unsatisfiable core [2023-02-16 00:58:32,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:58:32,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:32,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2023-02-16 00:58:32,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:32,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2023-02-16 00:58:33,004 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2023-02-16 00:58:33,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 74 [2023-02-16 00:58:33,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:33,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:33,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:33,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2023-02-16 00:58:33,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-02-16 00:58:33,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-02-16 00:58:33,048 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-16 00:58:33,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 43 [2023-02-16 00:58:33,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:33,150 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:58:33,159 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-02-16 00:58:33,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 62 [2023-02-16 00:58:33,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:33,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:33,167 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:58:33,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 51 [2023-02-16 00:58:33,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:33,266 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:58:33,272 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-02-16 00:58:33,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 52 [2023-02-16 00:58:33,283 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2023-02-16 00:58:33,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 21 [2023-02-16 00:58:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:33,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:58:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:33,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569984766] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:58:33,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:58:33,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-02-16 00:58:33,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524263717] [2023-02-16 00:58:33,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:58:33,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 00:58:33,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 00:58:33,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-02-16 00:58:33,443 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2023-02-16 00:58:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:33,875 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2023-02-16 00:58:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 00:58:33,876 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) Word has length 15 [2023-02-16 00:58:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:33,876 INFO L225 Difference]: With dead ends: 75 [2023-02-16 00:58:33,876 INFO L226 Difference]: Without dead ends: 64 [2023-02-16 00:58:33,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2023-02-16 00:58:33,877 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:33,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 207 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:58:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-16 00:58:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2023-02-16 00:58:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2023-02-16 00:58:33,883 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 15 [2023-02-16 00:58:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:33,884 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2023-02-16 00:58:33,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2023-02-16 00:58:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2023-02-16 00:58:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 00:58:33,884 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:33,885 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:33,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 00:58:34,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:34,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1157082046, now seen corresponding path program 1 times [2023-02-16 00:58:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:34,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361887876] [2023-02-16 00:58:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:34,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:34,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361887876] [2023-02-16 00:58:34,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361887876] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:58:34,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092742440] [2023-02-16 00:58:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:34,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:34,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:58:34,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:58:34,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:58:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:34,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-16 00:58:34,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:58:34,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:34,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2023-02-16 00:58:34,575 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-02-16 00:58:34,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 71 [2023-02-16 00:58:34,597 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-16 00:58:34,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2023-02-16 00:58:34,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:34,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2023-02-16 00:58:34,645 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-16 00:58:34,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-16 00:58:34,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2023-02-16 00:58:34,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:58:34,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2023-02-16 00:58:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:34,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:58:34,756 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_679 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_679) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)))) is different from false [2023-02-16 00:58:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:34,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092742440] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:58:34,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:58:34,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-02-16 00:58:34,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847489784] [2023-02-16 00:58:34,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:58:34,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 00:58:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:34,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 00:58:34,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=100, Unknown=1, NotChecked=20, Total=156 [2023-02-16 00:58:34,807 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:35,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:35,397 INFO L93 Difference]: Finished difference Result 189 states and 238 transitions. [2023-02-16 00:58:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 00:58:35,397 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-16 00:58:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:35,398 INFO L225 Difference]: With dead ends: 189 [2023-02-16 00:58:35,398 INFO L226 Difference]: Without dead ends: 187 [2023-02-16 00:58:35,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=388, Unknown=1, NotChecked=44, Total=600 [2023-02-16 00:58:35,399 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 307 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:35,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 345 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 363 Invalid, 2 Unknown, 103 Unchecked, 0.4s Time] [2023-02-16 00:58:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-02-16 00:58:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 71. [2023-02-16 00:58:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 70 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2023-02-16 00:58:35,411 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 16 [2023-02-16 00:58:35,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:35,412 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2023-02-16 00:58:35,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:35,412 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2023-02-16 00:58:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 00:58:35,413 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:35,413 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:35,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 00:58:35,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-16 00:58:35,619 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:35,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:35,621 INFO L85 PathProgramCache]: Analyzing trace with hash 442135079, now seen corresponding path program 2 times [2023-02-16 00:58:35,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:35,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556818368] [2023-02-16 00:58:35,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:35,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:36,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:36,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556818368] [2023-02-16 00:58:36,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556818368] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:58:36,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156060778] [2023-02-16 00:58:36,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:58:36,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:36,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:58:36,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:58:36,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:58:36,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:58:36,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:58:36,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-16 00:58:36,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:58:36,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:36,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:36,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2023-02-16 00:58:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:36,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:36,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:36,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2023-02-16 00:58:36,507 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2023-02-16 00:58:36,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2023-02-16 00:58:36,569 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 00:58:36,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-02-16 00:58:36,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 00:58:36,600 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-02-16 00:58:36,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-02-16 00:58:36,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-16 00:58:36,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2023-02-16 00:58:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:58:36,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:58:36,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156060778] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:58:36,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:58:36,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-02-16 00:58:36,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163025439] [2023-02-16 00:58:36,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:58:36,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 00:58:36,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 00:58:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-02-16 00:58:36,762 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:37,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:37,106 INFO L93 Difference]: Finished difference Result 184 states and 227 transitions. [2023-02-16 00:58:37,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 00:58:37,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 18 [2023-02-16 00:58:37,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:37,107 INFO L225 Difference]: With dead ends: 184 [2023-02-16 00:58:37,107 INFO L226 Difference]: Without dead ends: 149 [2023-02-16 00:58:37,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-02-16 00:58:37,108 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 92 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:37,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 172 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:58:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-16 00:58:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 99. [2023-02-16 00:58:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 97 states have (on average 1.2577319587628866) internal successors, (122), 98 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 122 transitions. [2023-02-16 00:58:37,122 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 122 transitions. Word has length 18 [2023-02-16 00:58:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:37,122 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 122 transitions. [2023-02-16 00:58:37,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:37,122 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 122 transitions. [2023-02-16 00:58:37,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 00:58:37,122 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:37,123 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:37,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:58:37,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:37,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash -482453053, now seen corresponding path program 1 times [2023-02-16 00:58:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:37,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021740574] [2023-02-16 00:58:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021740574] [2023-02-16 00:58:37,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021740574] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:58:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870576922] [2023-02-16 00:58:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:37,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:37,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:58:37,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:58:37,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:58:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:37,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 71 conjunts are in the unsatisfiable core [2023-02-16 00:58:37,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:58:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:37,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2023-02-16 00:58:37,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:37,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2023-02-16 00:58:37,905 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2023-02-16 00:58:37,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 88 [2023-02-16 00:58:37,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:37,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:37,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:37,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-16 00:58:37,938 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-16 00:58:37,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2023-02-16 00:58:37,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-02-16 00:58:37,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-02-16 00:58:38,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:38,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:38,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:38,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2023-02-16 00:58:38,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:38,076 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-16 00:58:38,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 80 [2023-02-16 00:58:38,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:38,104 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-02-16 00:58:38,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2023-02-16 00:58:38,186 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-16 00:58:38,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 78 [2023-02-16 00:58:38,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:38,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2023-02-16 00:58:38,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:38,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2023-02-16 00:58:38,365 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 00:58:38,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 26 [2023-02-16 00:58:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:38,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:58:38,428 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1051 (Array Int Int)) (v_ArrVal_1050 (Array Int Int))) (not (= 0 (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1051))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1050) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))))) is different from false [2023-02-16 00:58:38,438 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_24| Int) (v_ArrVal_1051 (Array Int Int)) (v_ArrVal_1050 (Array Int Int))) (or (not (= 0 (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_24| v_ArrVal_1051))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_24| v_ArrVal_1050) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)))) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_24|))))) is different from false [2023-02-16 00:58:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:38,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870576922] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:58:38,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:58:38,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-02-16 00:58:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772321486] [2023-02-16 00:58:38,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:58:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 00:58:38,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 00:58:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=195, Unknown=2, NotChecked=58, Total=306 [2023-02-16 00:58:38,467 INFO L87 Difference]: Start difference. First operand 99 states and 122 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:39,463 INFO L93 Difference]: Finished difference Result 222 states and 278 transitions. [2023-02-16 00:58:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-16 00:58:39,464 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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 19 [2023-02-16 00:58:39,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:39,464 INFO L225 Difference]: With dead ends: 222 [2023-02-16 00:58:39,464 INFO L226 Difference]: Without dead ends: 220 [2023-02-16 00:58:39,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=755, Unknown=2, NotChecked=122, Total=1122 [2023-02-16 00:58:39,465 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 535 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:39,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 279 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 356 Invalid, 0 Unknown, 231 Unchecked, 0.5s Time] [2023-02-16 00:58:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-02-16 00:58:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 120. [2023-02-16 00:58:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.2796610169491525) internal successors, (151), 119 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2023-02-16 00:58:39,483 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 19 [2023-02-16 00:58:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:39,483 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2023-02-16 00:58:39,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2023-02-16 00:58:39,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 00:58:39,484 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:39,484 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:39,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 00:58:39,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:39,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:39,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1136543444, now seen corresponding path program 2 times [2023-02-16 00:58:39,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:39,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217227400] [2023-02-16 00:58:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:39,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:40,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:40,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217227400] [2023-02-16 00:58:40,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217227400] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:58:40,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66602484] [2023-02-16 00:58:40,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:58:40,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:40,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:58:40,621 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:58:40,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 00:58:40,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:58:40,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:58:40,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 82 conjunts are in the unsatisfiable core [2023-02-16 00:58:40,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:58:41,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 38 [2023-02-16 00:58:41,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 42 [2023-02-16 00:58:41,033 INFO L321 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2023-02-16 00:58:41,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 79 [2023-02-16 00:58:41,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2023-02-16 00:58:41,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-02-16 00:58:41,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 31 [2023-02-16 00:58:41,059 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-16 00:58:41,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 43 [2023-02-16 00:58:41,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 31 [2023-02-16 00:58:41,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-02-16 00:58:41,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2023-02-16 00:58:41,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,190 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:58:41,203 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2023-02-16 00:58:41,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 105 treesize of output 79 [2023-02-16 00:58:41,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,324 INFO L321 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2023-02-16 00:58:41,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 58 [2023-02-16 00:58:41,329 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:58:41,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:41,340 INFO L321 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2023-02-16 00:58:41,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 101 treesize of output 68 [2023-02-16 00:58:41,475 INFO L321 Elim1Store]: treesize reduction 61, result has 15.3 percent of original size [2023-02-16 00:58:41,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 136 treesize of output 78 [2023-02-16 00:58:41,490 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2023-02-16 00:58:41,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 27 [2023-02-16 00:58:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:41,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:58:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:50,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66602484] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:58:50,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:58:50,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 20 [2023-02-16 00:58:50,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029196725] [2023-02-16 00:58:50,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:58:50,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 00:58:50,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:50,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 00:58:50,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=312, Unknown=3, NotChecked=0, Total=380 [2023-02-16 00:58:50,010 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:51,337 INFO L93 Difference]: Finished difference Result 149 states and 185 transitions. [2023-02-16 00:58:51,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 00:58:51,338 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 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 [2023-02-16 00:58:51,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:51,338 INFO L225 Difference]: With dead ends: 149 [2023-02-16 00:58:51,338 INFO L226 Difference]: Without dead ends: 138 [2023-02-16 00:58:51,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=155, Invalid=598, Unknown=3, NotChecked=0, Total=756 [2023-02-16 00:58:51,339 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 64 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:51,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 267 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-16 00:58:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-16 00:58:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 125. [2023-02-16 00:58:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 123 states have (on average 1.2682926829268293) internal successors, (156), 124 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:51,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 156 transitions. [2023-02-16 00:58:51,405 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 156 transitions. Word has length 20 [2023-02-16 00:58:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:51,405 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 156 transitions. [2023-02-16 00:58:51,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 156 transitions. [2023-02-16 00:58:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 00:58:51,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:51,409 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:51,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-16 00:58:51,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:51,610 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:51,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash 220535656, now seen corresponding path program 2 times [2023-02-16 00:58:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:51,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151444162] [2023-02-16 00:58:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:51,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:58:52,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:52,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151444162] [2023-02-16 00:58:52,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151444162] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:58:52,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137326860] [2023-02-16 00:58:52,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:58:52,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:52,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:58:52,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:58:52,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 00:58:52,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:58:52,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:58:52,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 64 conjunts are in the unsatisfiable core [2023-02-16 00:58:52,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:58:52,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:52,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2023-02-16 00:58:52,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:52,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2023-02-16 00:58:52,592 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-02-16 00:58:52,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 93 [2023-02-16 00:58:52,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 40 [2023-02-16 00:58:52,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:52,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:52,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:52,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2023-02-16 00:58:52,652 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-16 00:58:52,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2023-02-16 00:58:52,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-16 00:58:52,739 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 00:58:52,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 00:58:52,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-16 00:58:52,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:52,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2023-02-16 00:58:52,779 INFO L321 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2023-02-16 00:58:52,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2023-02-16 00:58:52,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-16 00:58:52,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-02-16 00:58:52,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-02-16 00:58:52,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 00:58:53,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-02-16 00:58:53,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 00:58:53,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2023-02-16 00:58:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:58:53,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:58:53,151 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1457 (Array Int Int)) (v_ArrVal_1456 (Array Int Int)) (|ULTIMATE.start_main_~item~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ |ULTIMATE.start_main_~item~0#1.offset| 4) 1)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1457) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1456) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 8)) 1)) is different from false [2023-02-16 00:58:53,161 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:58:53,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2023-02-16 00:58:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:58:53,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137326860] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:58:53,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:58:53,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-02-16 00:58:53,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054689855] [2023-02-16 00:58:53,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:58:53,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 00:58:53,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:53,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 00:58:53,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=291, Unknown=1, NotChecked=34, Total=380 [2023-02-16 00:58:53,213 INFO L87 Difference]: Start difference. First operand 125 states and 156 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 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) [2023-02-16 00:58:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:54,069 INFO L93 Difference]: Finished difference Result 285 states and 357 transitions. [2023-02-16 00:58:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:58:54,069 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 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) Word has length 21 [2023-02-16 00:58:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:54,071 INFO L225 Difference]: With dead ends: 285 [2023-02-16 00:58:54,071 INFO L226 Difference]: Without dead ends: 250 [2023-02-16 00:58:54,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=469, Unknown=1, NotChecked=46, Total=650 [2023-02-16 00:58:54,072 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 168 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:54,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 341 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 499 Invalid, 0 Unknown, 73 Unchecked, 0.6s Time] [2023-02-16 00:58:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-02-16 00:58:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 177. [2023-02-16 00:58:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.28) internal successors, (224), 176 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2023-02-16 00:58:54,103 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 224 transitions. Word has length 21 [2023-02-16 00:58:54,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:54,103 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 224 transitions. [2023-02-16 00:58:54,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 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) [2023-02-16 00:58:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 224 transitions. [2023-02-16 00:58:54,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 00:58:54,104 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:54,104 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:54,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 00:58:54,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:54,312 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:54,313 INFO L85 PathProgramCache]: Analyzing trace with hash -800532698, now seen corresponding path program 1 times [2023-02-16 00:58:54,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:54,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835095213] [2023-02-16 00:58:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:54,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:55,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:58:55,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835095213] [2023-02-16 00:58:55,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835095213] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:58:55,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047647775] [2023-02-16 00:58:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:55,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:55,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:58:55,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:58:55,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 00:58:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:58:55,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 95 conjunts are in the unsatisfiable core [2023-02-16 00:58:55,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:58:55,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2023-02-16 00:58:55,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2023-02-16 00:58:55,257 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2023-02-16 00:58:55,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 81 [2023-02-16 00:58:55,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2023-02-16 00:58:55,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-02-16 00:58:55,296 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-16 00:58:55,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2023-02-16 00:58:55,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2023-02-16 00:58:55,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-02-16 00:58:55,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,412 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 00:58:55,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 99 treesize of output 67 [2023-02-16 00:58:55,424 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2023-02-16 00:58:55,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 36 [2023-02-16 00:58:55,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,450 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2023-02-16 00:58:55,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2023-02-16 00:58:55,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-02-16 00:58:55,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,483 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-02-16 00:58:55,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2023-02-16 00:58:55,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,598 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:58:55,607 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-02-16 00:58:55,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 77 [2023-02-16 00:58:55,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:58:55,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2023-02-16 00:58:55,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2023-02-16 00:58:56,051 INFO L321 Elim1Store]: treesize reduction 28, result has 22.2 percent of original size [2023-02-16 00:58:56,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 123 treesize of output 61 [2023-02-16 00:58:56,063 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 00:58:56,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2023-02-16 00:58:56,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-02-16 00:58:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:56,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:58:56,327 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:58:56,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 85 [2023-02-16 00:58:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:58:56,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047647775] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:58:56,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:58:56,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-02-16 00:58:56,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207971716] [2023-02-16 00:58:56,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:58:56,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-16 00:58:56,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:58:56,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-16 00:58:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=350, Unknown=11, NotChecked=0, Total=420 [2023-02-16 00:58:56,449 INFO L87 Difference]: Start difference. First operand 177 states and 224 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 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) [2023-02-16 00:58:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:58:58,227 INFO L93 Difference]: Finished difference Result 338 states and 426 transitions. [2023-02-16 00:58:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 00:58:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 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 21 [2023-02-16 00:58:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:58:58,228 INFO L225 Difference]: With dead ends: 338 [2023-02-16 00:58:58,229 INFO L226 Difference]: Without dead ends: 303 [2023-02-16 00:58:58,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=268, Invalid=981, Unknown=11, NotChecked=0, Total=1260 [2023-02-16 00:58:58,229 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 305 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:58:58,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 491 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-16 00:58:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-02-16 00:58:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 220. [2023-02-16 00:58:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.2798165137614679) internal successors, (279), 219 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:58:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 279 transitions. [2023-02-16 00:58:58,269 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 279 transitions. Word has length 21 [2023-02-16 00:58:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:58:58,269 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 279 transitions. [2023-02-16 00:58:58,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 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) [2023-02-16 00:58:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 279 transitions. [2023-02-16 00:58:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 00:58:58,270 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:58:58,270 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:58,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 00:58:58,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:58:58,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-16 00:58:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:58:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash -962615628, now seen corresponding path program 1 times [2023-02-16 00:58:58,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:58:58,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5953876] [2023-02-16 00:58:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:58:58,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:58:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 00:58:58,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 00:58:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 00:58:58,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 00:58:58,580 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-16 00:58:58,581 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-02-16 00:58:58,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-02-16 00:58:58,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-02-16 00:58:58,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-02-16 00:58:58,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-02-16 00:58:58,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-16 00:58:58,585 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-16 00:58:58,595 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 00:58:58,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 12:58:58 BoogieIcfgContainer [2023-02-16 00:58:58,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 00:58:58,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 00:58:58,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 00:58:58,644 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 00:58:58,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:58:30" (3/4) ... [2023-02-16 00:58:58,646 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-16 00:58:58,693 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 00:58:58,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 00:58:58,694 INFO L158 Benchmark]: Toolchain (without parser) took 29117.70ms. Allocated memory was 104.9MB in the beginning and 396.4MB in the end (delta: 291.5MB). Free memory was 59.1MB in the beginning and 250.8MB in the end (delta: -191.7MB). Peak memory consumption was 100.5MB. Max. memory is 16.1GB. [2023-02-16 00:58:58,694 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 00:58:58,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.06ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 59.1MB in the beginning and 97.9MB in the end (delta: -38.8MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2023-02-16 00:58:58,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.41ms. Allocated memory is still 125.8MB. Free memory was 97.9MB in the beginning and 95.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 00:58:58,695 INFO L158 Benchmark]: Boogie Preprocessor took 20.81ms. Allocated memory is still 125.8MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 00:58:58,695 INFO L158 Benchmark]: RCFGBuilder took 424.71ms. Allocated memory is still 125.8MB. Free memory was 93.7MB in the beginning and 70.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-02-16 00:58:58,695 INFO L158 Benchmark]: TraceAbstraction took 28243.23ms. Allocated memory was 125.8MB in the beginning and 396.4MB in the end (delta: 270.5MB). Free memory was 69.4MB in the beginning and 252.9MB in the end (delta: -183.5MB). Peak memory consumption was 86.8MB. Max. memory is 16.1GB. [2023-02-16 00:58:58,695 INFO L158 Benchmark]: Witness Printer took 49.63ms. Allocated memory is still 396.4MB. Free memory was 252.9MB in the beginning and 250.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 00:58:58,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.06ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 59.1MB in the beginning and 97.9MB in the end (delta: -38.8MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.41ms. Allocated memory is still 125.8MB. Free memory was 97.9MB in the beginning and 95.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.81ms. Allocated memory is still 125.8MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.71ms. Allocated memory is still 125.8MB. Free memory was 93.7MB in the beginning and 70.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 28243.23ms. Allocated memory was 125.8MB in the beginning and 396.4MB in the end (delta: 270.5MB). Free memory was 69.4MB in the beginning and 252.9MB in the end (delta: -183.5MB). Peak memory consumption was 86.8MB. Max. memory is 16.1GB. * Witness Printer took 49.63ms. Allocated memory is still 396.4MB. Free memory was 252.9MB in the beginning and 250.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1061]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] BCK* bucket = malloc(sizeof(BCK)); [L1005] bucket->data = 0 [L1006] bucket->list = ((void*)0) [L1008] bucket->next = malloc(sizeof(BCK)) [L1009] EXPR bucket->next [L1009] BCK* bcki = bucket->next; [L1010] bcki->data = 1 [L1011] bcki->list = ((void*)0) [L1013] bcki->next = malloc(sizeof(BCK)) [L1014] EXPR bcki->next [L1014] bcki = bcki->next [L1015] bcki->data = 2 [L1016] bcki->list = ((void*)0) [L1017] bcki->next = ((void*)0) [L1019] struct TSLL* item = ((void*)0); [L1020] struct TSLL* itr = ((void*)0); VAL [bcki={-1:0}, bucket={-3:0}, item={0:0}, itr={0:0}] [L1021] COND TRUE __VERIFIER_nondet_int() [L1023] item = malloc(sizeof(SLL)) [L1024] item->next = ((void*)0) [L1025] COND TRUE __VERIFIER_nondet_int() [L1026] item->data = 0 VAL [bcki={-1:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1032] bcki = bucket VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1034] COND FALSE !(!(bcki != ((void*)0))) VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1035] COND FALSE !(!(item != ((void*)0))) VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1036] EXPR bcki->data [L1036] EXPR item->data VAL [bcki={-3:0}, bcki->data=0, bucket={-3:0}, item={-4:0}, item->data=0, itr={0:0}] [L1036] COND FALSE !(bcki->data != item->data) [L1038] COND FALSE !(!(bcki != ((void*)0))) VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1040] EXPR bcki->list VAL [bcki={-3:0}, bcki->list={0:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1040] COND TRUE bcki->list == ((void*)0) [L1041] bcki->list = item VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1021] COND FALSE !(__VERIFIER_nondet_int()) [L1052] bcki = bucket VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1053] COND TRUE bcki != ((void*)0) [L1055] EXPR bcki->list [L1055] item = bcki->list [L1056] bcki->list = ((void*)0) VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1057] COND TRUE item != ((void*)0) [L1059] itr = item [L1060] EXPR item->next [L1060] item = item->next [L1061] EXPR itr->data [L1061] EXPR bcki->data VAL [bcki={-3:0}, bcki->data=0, bucket={-3:0}, item={0:0}, itr={-4:0}, itr->data=0] [L1061] COND TRUE !(itr->data != bcki->data) [L1061] reach_error() VAL [bcki={-3:0}, bucket={-3:0}, item={0:0}, itr={-4:0}] - UnprovableResult [Line: 1034]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 28.2s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 1695 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1695 mSDsluCounter, 2399 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 407 IncrementalHoareTripleChecker+Unchecked, 2003 mSDsCounter, 220 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2858 IncrementalHoareTripleChecker+Invalid, 3487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 220 mSolverCounterUnsat, 396 mSDtfsCounter, 2858 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 184 SyntacticMatches, 9 SemanticMatches, 185 ConstructedPredicates, 4 IntricatePredicates, 2 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=11, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 488 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 385 ConstructedInterpolants, 43 QuantifiedInterpolants, 12259 SizeOfPredicates, 63 NumberOfNonLiveVariables, 1807 ConjunctsInSsa, 478 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 54/141 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-16 00:58:58,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE