./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-buckets-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 22:46:35,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 22:46:35,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 22:46:35,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 22:46:35,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 22:46:35,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 22:46:35,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 22:46:35,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 22:46:35,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 22:46:35,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 22:46:35,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 22:46:35,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 22:46:35,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 22:46:35,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 22:46:35,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 22:46:35,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 22:46:35,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 22:46:35,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 22:46:35,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 22:46:35,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 22:46:35,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 22:46:35,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 22:46:35,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 22:46:35,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 22:46:35,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 22:46:35,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 22:46:35,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 22:46:35,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 22:46:35,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 22:46:35,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 22:46:35,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 22:46:35,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 22:46:35,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 22:46:35,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 22:46:35,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 22:46:35,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 22:46:35,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 22:46:35,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 22:46:35,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 22:46:35,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 22:46:35,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 22:46:35,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 22:46:35,416 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 22:46:35,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 22:46:35,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 22:46:35,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 22:46:35,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 22:46:35,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 22:46:35,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 22:46:35,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 22:46:35,419 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 22:46:35,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 22:46:35,419 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 22:46:35,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 22:46:35,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 22:46:35,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 22:46:35,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 22:46:35,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 22:46:35,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 22:46:35,420 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 22:46:35,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 22:46:35,421 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 22:46:35,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 22:46:35,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 22:46:35,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 22:46:35,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 22:46:35,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:46:35,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 22:46:35,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 22:46:35,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 22:46:35,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 22:46:35,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 22:46:35,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 22:46:35,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 22:46:35,422 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 22:46:35,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 22:46:35,423 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 22:46:35,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac [2023-02-14 22:46:35,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 22:46:35,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 22:46:35,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 22:46:35,655 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 22:46:35,656 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 22:46:35,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-buckets-1.i [2023-02-14 22:46:36,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 22:46:36,821 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 22:46:36,822 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-buckets-1.i [2023-02-14 22:46:36,830 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af2161101/f55b49a2199d457884564f3d9ce0f0df/FLAGcf1400aeb [2023-02-14 22:46:36,842 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af2161101/f55b49a2199d457884564f3d9ce0f0df [2023-02-14 22:46:36,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 22:46:36,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 22:46:36,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 22:46:36,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 22:46:36,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 22:46:36,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:46:36" (1/1) ... [2023-02-14 22:46:36,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f3eadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:36, skipping insertion in model container [2023-02-14 22:46:36,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:46:36" (1/1) ... [2023-02-14 22:46:36,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 22:46:36,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 22:46:37,144 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-1.i[22663,22676] [2023-02-14 22:46:37,147 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-1.i[22734,22747] [2023-02-14 22:46:37,148 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-1.i[22862,22875] [2023-02-14 22:46:37,150 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-1.i[23275,23288] [2023-02-14 22:46:37,151 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-1.i[23364,23377] [2023-02-14 22:46:37,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:46:37,161 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 22:46:37,187 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-1.i[22663,22676] [2023-02-14 22:46:37,192 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-1.i[22734,22747] [2023-02-14 22:46:37,194 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-1.i[22862,22875] [2023-02-14 22:46:37,217 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-1.i[23275,23288] [2023-02-14 22:46:37,218 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-1.i[23364,23377] [2023-02-14 22:46:37,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:46:37,236 INFO L208 MainTranslator]: Completed translation [2023-02-14 22:46:37,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37 WrapperNode [2023-02-14 22:46:37,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 22:46:37,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 22:46:37,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 22:46:37,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 22:46:37,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,267 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 155 [2023-02-14 22:46:37,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 22:46:37,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 22:46:37,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 22:46:37,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 22:46:37,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,294 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 22:46:37,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 22:46:37,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 22:46:37,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 22:46:37,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (1/1) ... [2023-02-14 22:46:37,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:46:37,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:46:37,333 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) [2023-02-14 22:46:37,339 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 [2023-02-14 22:46:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 22:46:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 22:46:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 22:46:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 22:46:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 22:46:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 22:46:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 22:46:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 22:46:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 22:46:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 22:46:37,447 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 22:46:37,453 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 22:46:37,670 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 22:46:37,674 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 22:46:37,674 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2023-02-14 22:46:37,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:46:37 BoogieIcfgContainer [2023-02-14 22:46:37,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 22:46:37,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 22:46:37,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 22:46:37,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 22:46:37,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:46:36" (1/3) ... [2023-02-14 22:46:37,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fa86b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:46:37, skipping insertion in model container [2023-02-14 22:46:37,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:46:37" (2/3) ... [2023-02-14 22:46:37,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fa86b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:46:37, skipping insertion in model container [2023-02-14 22:46:37,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:46:37" (3/3) ... [2023-02-14 22:46:37,680 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.i [2023-02-14 22:46:37,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 22:46:37,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-02-14 22:46:37,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 22:46:37,723 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;@26d693bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 22:46:37,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-02-14 22:46:37,725 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) [2023-02-14 22:46:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 22:46:37,729 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:37,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:37,730 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)] === [2023-02-14 22:46:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash 179510098, now seen corresponding path program 1 times [2023-02-14 22:46:37,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:37,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78853478] [2023-02-14 22:46:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:37,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:38,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78853478] [2023-02-14 22:46:38,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78853478] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:46:38,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:46:38,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 22:46:38,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054658602] [2023-02-14 22:46:38,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:46:38,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 22:46:38,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 22:46:38,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 22:46:38,117 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) [2023-02-14 22:46:38,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:38,196 INFO L93 Difference]: Finished difference Result 112 states and 188 transitions. [2023-02-14 22:46:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 22:46:38,198 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 [2023-02-14 22:46:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:38,203 INFO L225 Difference]: With dead ends: 112 [2023-02-14 22:46:38,204 INFO L226 Difference]: Without dead ends: 66 [2023-02-14 22:46:38,206 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 [2023-02-14 22:46:38,209 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 [2023-02-14 22:46:38,209 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] [2023-02-14 22:46:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-14 22:46:38,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2023-02-14 22:46:38,251 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) [2023-02-14 22:46:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-02-14 22:46:38,252 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 8 [2023-02-14 22:46:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:38,253 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-02-14 22:46:38,253 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) [2023-02-14 22:46:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-02-14 22:46:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 22:46:38,253 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:38,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:38,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 22:46:38,254 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)] === [2023-02-14 22:46:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:38,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1306111283, now seen corresponding path program 1 times [2023-02-14 22:46:38,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:38,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933247239] [2023-02-14 22:46:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:38,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:38,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:38,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933247239] [2023-02-14 22:46:38,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933247239] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:46:38,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:46:38,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:46:38,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796299155] [2023-02-14 22:46:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:46:38,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:46:38,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:38,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:46:38,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:46:38,341 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) [2023-02-14 22:46:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:38,371 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-02-14 22:46:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:46:38,372 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 [2023-02-14 22:46:38,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:38,374 INFO L225 Difference]: With dead ends: 45 [2023-02-14 22:46:38,374 INFO L226 Difference]: Without dead ends: 43 [2023-02-14 22:46:38,375 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 [2023-02-14 22:46:38,376 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 [2023-02-14 22:46:38,377 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] [2023-02-14 22:46:38,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-14 22:46:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2023-02-14 22:46:38,382 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) [2023-02-14 22:46:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2023-02-14 22:46:38,384 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 9 [2023-02-14 22:46:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:38,387 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2023-02-14 22:46:38,387 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) [2023-02-14 22:46:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2023-02-14 22:46:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 22:46:38,388 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:38,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:38,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 22:46:38,388 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)] === [2023-02-14 22:46:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:38,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1834780084, now seen corresponding path program 1 times [2023-02-14 22:46:38,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:38,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512577272] [2023-02-14 22:46:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:38,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:38,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512577272] [2023-02-14 22:46:38,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512577272] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:46:38,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:46:38,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 22:46:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541459251] [2023-02-14 22:46:38,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:46:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 22:46:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:38,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 22:46:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 22:46:38,822 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) [2023-02-14 22:46:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:38,948 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2023-02-14 22:46:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 22:46:38,949 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 [2023-02-14 22:46:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:38,952 INFO L225 Difference]: With dead ends: 61 [2023-02-14 22:46:38,952 INFO L226 Difference]: Without dead ends: 50 [2023-02-14 22:46:38,952 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 [2023-02-14 22:46:38,954 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 [2023-02-14 22:46:38,955 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] [2023-02-14 22:46:38,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-14 22:46:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2023-02-14 22:46:38,971 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) [2023-02-14 22:46:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-02-14 22:46:38,972 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 10 [2023-02-14 22:46:38,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:38,972 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-02-14 22:46:38,972 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) [2023-02-14 22:46:38,973 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-02-14 22:46:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 22:46:38,973 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:38,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:38,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 22:46:38,973 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)] === [2023-02-14 22:46:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash 710639734, now seen corresponding path program 1 times [2023-02-14 22:46:38,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:38,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972462612] [2023-02-14 22:46:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:38,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:39,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:39,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972462612] [2023-02-14 22:46:39,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972462612] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:46:39,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:46:39,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:46:39,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909172453] [2023-02-14 22:46:39,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:46:39,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:46:39,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:46:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:46:39,024 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) [2023-02-14 22:46:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:39,057 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-02-14 22:46:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:46:39,058 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 [2023-02-14 22:46:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:39,058 INFO L225 Difference]: With dead ends: 45 [2023-02-14 22:46:39,058 INFO L226 Difference]: Without dead ends: 43 [2023-02-14 22:46:39,059 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 [2023-02-14 22:46:39,059 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 [2023-02-14 22:46:39,059 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] [2023-02-14 22:46:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-14 22:46:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-02-14 22:46:39,063 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) [2023-02-14 22:46:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-02-14 22:46:39,064 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 10 [2023-02-14 22:46:39,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:39,064 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-02-14 22:46:39,064 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) [2023-02-14 22:46:39,064 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-02-14 22:46:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 22:46:39,065 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:39,065 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:39,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 22:46:39,065 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)] === [2023-02-14 22:46:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash 625501225, now seen corresponding path program 1 times [2023-02-14 22:46:39,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:39,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571261890] [2023-02-14 22:46:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:39,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:39,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571261890] [2023-02-14 22:46:39,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571261890] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:46:39,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550819832] [2023-02-14 22:46:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:39,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:46:39,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:46:39,637 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) [2023-02-14 22:46:39,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 22:46:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:39,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 63 conjunts are in the unsatisfiable core [2023-02-14 22:46:39,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:46:39,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:39,839 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 [2023-02-14 22:46:39,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:39,862 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 32 treesize of output 36 [2023-02-14 22:46:39,887 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2023-02-14 22:46:39,888 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 [2023-02-14 22:46:39,898 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 [2023-02-14 22:46:39,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:39,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:39,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:39,909 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 27 treesize of output 31 [2023-02-14 22:46:39,917 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 [2023-02-14 22:46:39,929 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 22:46:39,929 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 35 treesize of output 27 [2023-02-14 22:46:40,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:40,050 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2023-02-14 22:46:40,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:40,055 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:46:40,063 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-14 22:46:40,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 51 [2023-02-14 22:46:40,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:40,154 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:46:40,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:46:40,156 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 76 treesize of output 44 [2023-02-14 22:46:40,168 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2023-02-14 22:46:40,168 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 [2023-02-14 22:46:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:40,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:46:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:40,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550819832] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:46:40,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:46:40,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-02-14 22:46:40,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417426587] [2023-02-14 22:46:40,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:46:40,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 22:46:40,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:40,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 22:46:40,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-02-14 22:46:40,345 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) [2023-02-14 22:46:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:40,799 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2023-02-14 22:46:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 22:46:40,799 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 [2023-02-14 22:46:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:40,801 INFO L225 Difference]: With dead ends: 75 [2023-02-14 22:46:40,802 INFO L226 Difference]: Without dead ends: 64 [2023-02-14 22:46:40,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-02-14 22:46:40,804 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 66 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 22:46:40,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 209 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 22:46:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-14 22:46:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2023-02-14 22:46:40,815 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) [2023-02-14 22:46:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2023-02-14 22:46:40,815 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 15 [2023-02-14 22:46:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:40,815 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2023-02-14 22:46:40,815 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) [2023-02-14 22:46:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2023-02-14 22:46:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 22:46:40,816 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:40,816 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:40,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 22:46:41,021 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 [2023-02-14 22:46:41,022 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)] === [2023-02-14 22:46:41,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1157082046, now seen corresponding path program 1 times [2023-02-14 22:46:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:41,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89072158] [2023-02-14 22:46:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:41,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:41,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89072158] [2023-02-14 22:46:41,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89072158] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:46:41,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591843016] [2023-02-14 22:46:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:41,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:46:41,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:46:41,372 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) [2023-02-14 22:46:41,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 22:46:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:41,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-14 22:46:41,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:46:41,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:41,500 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 [2023-02-14 22:46:41,517 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-02-14 22:46:41,517 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 [2023-02-14 22:46:41,542 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-14 22:46:41,543 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 [2023-02-14 22:46:41,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:41,582 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 [2023-02-14 22:46:41,593 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-14 22:46:41,593 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 [2023-02-14 22:46:41,620 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 [2023-02-14 22:46:41,679 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:46:41,679 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 [2023-02-14 22:46:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:41,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:46:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:41,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591843016] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:46:41,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:46:41,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-02-14 22:46:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123974841] [2023-02-14 22:46:41,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:46:41,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-14 22:46:41,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:41,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-14 22:46:41,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=117, Unknown=2, NotChecked=0, Total=156 [2023-02-14 22:46:41,776 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) [2023-02-14 22:46:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:42,196 INFO L93 Difference]: Finished difference Result 155 states and 194 transitions. [2023-02-14 22:46:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 22:46:42,197 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 [2023-02-14 22:46:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:42,198 INFO L225 Difference]: With dead ends: 155 [2023-02-14 22:46:42,198 INFO L226 Difference]: Without dead ends: 153 [2023-02-14 22:46:42,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=315, Unknown=2, NotChecked=0, Total=462 [2023-02-14 22:46:42,198 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 355 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 22:46:42,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 316 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 22:46:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-02-14 22:46:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 71. [2023-02-14 22:46:42,206 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) [2023-02-14 22:46:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2023-02-14 22:46:42,207 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 16 [2023-02-14 22:46:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:42,207 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2023-02-14 22:46:42,207 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) [2023-02-14 22:46:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2023-02-14 22:46:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 22:46:42,208 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:42,208 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:42,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 22:46:42,413 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 [2023-02-14 22:46:42,413 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)] === [2023-02-14 22:46:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:42,414 INFO L85 PathProgramCache]: Analyzing trace with hash 442135079, now seen corresponding path program 2 times [2023-02-14 22:46:42,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:42,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442792594] [2023-02-14 22:46:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:42,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:42,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:42,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442792594] [2023-02-14 22:46:42,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442792594] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:46:42,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971892985] [2023-02-14 22:46:42,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 22:46:42,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:46:42,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:46:42,802 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) [2023-02-14 22:46:42,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 22:46:43,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 22:46:43,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:46:43,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-14 22:46:43,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:46:43,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:43,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:43,093 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 [2023-02-14 22:46:43,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:43,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:43,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:43,099 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 [2023-02-14 22:46:43,116 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2023-02-14 22:46:43,116 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 [2023-02-14 22:46:43,167 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-02-14 22:46:43,167 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 [2023-02-14 22:46:43,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 22:46:43,186 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 [2023-02-14 22:46:43,244 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 [2023-02-14 22:46:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 22:46:43,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 22:46:43,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971892985] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:46:43,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 22:46:43,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-02-14 22:46:43,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012826857] [2023-02-14 22:46:43,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:46:43,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 22:46:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:43,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 22:46:43,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-02-14 22:46:43,259 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) [2023-02-14 22:46:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:43,531 INFO L93 Difference]: Finished difference Result 184 states and 227 transitions. [2023-02-14 22:46:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 22:46:43,532 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 [2023-02-14 22:46:43,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:43,532 INFO L225 Difference]: With dead ends: 184 [2023-02-14 22:46:43,533 INFO L226 Difference]: Without dead ends: 149 [2023-02-14 22:46:43,533 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 [2023-02-14 22:46:43,533 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 106 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 22:46:43,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 161 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 22:46:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-14 22:46:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 99. [2023-02-14 22:46:43,547 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) [2023-02-14 22:46:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 122 transitions. [2023-02-14 22:46:43,547 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 122 transitions. Word has length 18 [2023-02-14 22:46:43,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:43,547 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 122 transitions. [2023-02-14 22:46:43,548 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) [2023-02-14 22:46:43,548 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 122 transitions. [2023-02-14 22:46:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 22:46:43,548 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:43,548 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:43,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 22:46:43,754 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 [2023-02-14 22:46:43,754 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)] === [2023-02-14 22:46:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash -482453053, now seen corresponding path program 1 times [2023-02-14 22:46:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:43,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356031606] [2023-02-14 22:46:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:43,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:44,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:44,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356031606] [2023-02-14 22:46:44,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356031606] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:46:44,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474983988] [2023-02-14 22:46:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:44,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:46:44,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:46:44,139 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) [2023-02-14 22:46:44,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 22:46:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:44,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 71 conjunts are in the unsatisfiable core [2023-02-14 22:46:44,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:46:44,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,279 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 [2023-02-14 22:46:44,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,287 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 [2023-02-14 22:46:44,304 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2023-02-14 22:46:44,304 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 82 treesize of output 81 [2023-02-14 22:46:44,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,316 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 [2023-02-14 22:46:44,318 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 [2023-02-14 22:46:44,343 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-14 22:46:44,343 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 [2023-02-14 22:46:44,349 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 [2023-02-14 22:46:44,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,408 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-14 22:46:44,408 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 102 treesize of output 78 [2023-02-14 22:46:44,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,424 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-02-14 22:46:44,424 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 [2023-02-14 22:46:44,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,435 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 [2023-02-14 22:46:44,490 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-14 22:46:44,490 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 76 [2023-02-14 22:46:44,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,496 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 [2023-02-14 22:46:44,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:44,629 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 [2023-02-14 22:46:44,666 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 22:46:44,666 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 63 treesize of output 26 [2023-02-14 22:46:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:44,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:46:44,712 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1043 (Array Int Int)) (v_ArrVal_1042 (Array Int Int))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1043))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1042) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) 0))) is different from false [2023-02-14 22:46:44,720 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_24| Int) (v_ArrVal_1043 (Array Int Int)) (v_ArrVal_1042 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_24|) 0)) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_24| v_ArrVal_1043))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_24| v_ArrVal_1042) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) 0)))) is different from false [2023-02-14 22:46:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:44,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474983988] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:46:44,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:46:44,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-02-14 22:46:44,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720011240] [2023-02-14 22:46:44,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:46:44,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-14 22:46:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:44,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-14 22:46:44,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=195, Unknown=2, NotChecked=58, Total=306 [2023-02-14 22:46:44,749 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) [2023-02-14 22:46:45,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:45,758 INFO L93 Difference]: Finished difference Result 222 states and 278 transitions. [2023-02-14 22:46:45,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 22:46:45,758 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 [2023-02-14 22:46:45,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:45,759 INFO L225 Difference]: With dead ends: 222 [2023-02-14 22:46:45,759 INFO L226 Difference]: Without dead ends: 220 [2023-02-14 22:46:45,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=709, Unknown=2, NotChecked=118, Total=1056 [2023-02-14 22:46:45,760 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 458 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 22:46:45,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 325 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 432 Invalid, 0 Unknown, 205 Unchecked, 0.5s Time] [2023-02-14 22:46:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-02-14 22:46:45,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 120. [2023-02-14 22:46:45,780 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) [2023-02-14 22:46:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2023-02-14 22:46:45,780 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 19 [2023-02-14 22:46:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:45,781 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2023-02-14 22:46:45,781 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) [2023-02-14 22:46:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2023-02-14 22:46:45,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 22:46:45,781 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:45,782 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:45,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 22:46:45,988 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 [2023-02-14 22:46:45,989 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)] === [2023-02-14 22:46:45,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:45,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1136543444, now seen corresponding path program 2 times [2023-02-14 22:46:45,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:45,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224627285] [2023-02-14 22:46:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:46,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:46,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224627285] [2023-02-14 22:46:46,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224627285] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:46:46,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973421008] [2023-02-14 22:46:46,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 22:46:46,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:46:46,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:46:46,873 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) [2023-02-14 22:46:46,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 22:46:47,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 22:46:47,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:46:47,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 76 conjunts are in the unsatisfiable core [2023-02-14 22:46:47,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:46:47,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,221 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 [2023-02-14 22:46:47,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,226 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 [2023-02-14 22:46:47,244 INFO L321 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2023-02-14 22:46:47,244 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 [2023-02-14 22:46:47,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,251 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 42 treesize of output 44 [2023-02-14 22:46:47,256 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 [2023-02-14 22:46:47,259 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-14 22:46:47,260 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 [2023-02-14 22:46:47,265 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 [2023-02-14 22:46:47,270 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 [2023-02-14 22:46:47,275 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 [2023-02-14 22:46:47,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,373 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:46:47,379 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-14 22:46:47,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 94 treesize of output 69 [2023-02-14 22:46:47,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 69 [2023-02-14 22:46:47,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,538 INFO L321 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2023-02-14 22:46:47,539 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 [2023-02-14 22:46:47,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:47,543 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:46:47,548 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-14 22:46:47,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 65 [2023-02-14 22:46:47,687 INFO L321 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2023-02-14 22:46:47,688 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 64 [2023-02-14 22:46:47,694 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-14 22:46:47,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 21 [2023-02-14 22:46:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:47,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:46:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:50,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973421008] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:46:50,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:46:50,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2023-02-14 22:46:50,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405345249] [2023-02-14 22:46:50,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:46:50,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-14 22:46:50,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:50,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-14 22:46:50,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=351, Unknown=1, NotChecked=0, Total=420 [2023-02-14 22:46:50,065 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 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) [2023-02-14 22:46:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:51,040 INFO L93 Difference]: Finished difference Result 149 states and 185 transitions. [2023-02-14 22:46:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-14 22:46:51,041 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 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 [2023-02-14 22:46:51,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:51,042 INFO L225 Difference]: With dead ends: 149 [2023-02-14 22:46:51,042 INFO L226 Difference]: Without dead ends: 138 [2023-02-14 22:46:51,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=167, Invalid=762, Unknown=1, NotChecked=0, Total=930 [2023-02-14 22:46:51,044 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 74 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-14 22:46:51,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 227 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-14 22:46:51,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-14 22:46:51,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 125. [2023-02-14 22:46:51,063 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) [2023-02-14 22:46:51,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 156 transitions. [2023-02-14 22:46:51,063 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 156 transitions. Word has length 20 [2023-02-14 22:46:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:51,064 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 156 transitions. [2023-02-14 22:46:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 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) [2023-02-14 22:46:51,064 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 156 transitions. [2023-02-14 22:46:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 22:46:51,064 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:51,065 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:51,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 22:46:51,269 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 [2023-02-14 22:46:51,270 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)] === [2023-02-14 22:46:51,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:51,270 INFO L85 PathProgramCache]: Analyzing trace with hash 220535656, now seen corresponding path program 2 times [2023-02-14 22:46:51,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:51,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335486151] [2023-02-14 22:46:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:51,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 22:46:51,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:51,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335486151] [2023-02-14 22:46:51,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335486151] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:46:51,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468316354] [2023-02-14 22:46:51,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 22:46:51,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:46:51,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:46:51,778 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) [2023-02-14 22:46:51,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 22:46:52,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 22:46:52,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:46:52,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 74 conjunts are in the unsatisfiable core [2023-02-14 22:46:52,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:46:52,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:52,131 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 [2023-02-14 22:46:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:52,137 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 [2023-02-14 22:46:52,157 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-02-14 22:46:52,157 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 104 treesize of output 99 [2023-02-14 22:46:52,163 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 [2023-02-14 22:46:52,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:52,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:52,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:52,170 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 27 treesize of output 31 [2023-02-14 22:46:52,173 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 [2023-02-14 22:46:52,202 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-14 22:46:52,203 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 [2023-02-14 22:46:52,208 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 [2023-02-14 22:46:52,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:52,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:52,249 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 [2023-02-14 22:46:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:52,254 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 57 treesize of output 51 [2023-02-14 22:46:52,267 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-14 22:46:52,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-02-14 22:46:52,285 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-14 22:46:52,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-14 22:46:52,337 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 56 treesize of output 50 [2023-02-14 22:46:52,340 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 [2023-02-14 22:46:52,352 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 [2023-02-14 22:46:52,495 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 57 treesize of output 33 [2023-02-14 22:46:52,535 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:46:52,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2023-02-14 22:46:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 22:46:52,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:46:52,606 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1452 (Array Int Int)) (v_ArrVal_1451 (Array Int Int)) (|ULTIMATE.start_main_~item~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|) 1)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1452) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (+ 8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1451) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) 1)) is different from false [2023-02-14 22:46:52,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:46:52,614 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 [2023-02-14 22:46:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 22:46:52,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468316354] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:46:52,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:46:52,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-02-14 22:46:52,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017451680] [2023-02-14 22:46:52,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:46:52,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-14 22:46:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-14 22:46:52,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2023-02-14 22:46:52,677 INFO L87 Difference]: Start difference. First operand 125 states and 156 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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) [2023-02-14 22:46:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:53,645 INFO L93 Difference]: Finished difference Result 275 states and 346 transitions. [2023-02-14 22:46:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 22:46:53,645 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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 [2023-02-14 22:46:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:53,646 INFO L225 Difference]: With dead ends: 275 [2023-02-14 22:46:53,646 INFO L226 Difference]: Without dead ends: 240 [2023-02-14 22:46:53,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=575, Unknown=1, NotChecked=52, Total=812 [2023-02-14 22:46:53,647 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 215 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-14 22:46:53,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 348 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 530 Invalid, 0 Unknown, 82 Unchecked, 0.6s Time] [2023-02-14 22:46:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-02-14 22:46:53,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 168. [2023-02-14 22:46:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 166 states have (on average 1.2650602409638554) internal successors, (210), 167 states have internal predecessors, (210), 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) [2023-02-14 22:46:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 210 transitions. [2023-02-14 22:46:53,670 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 210 transitions. Word has length 21 [2023-02-14 22:46:53,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:53,670 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 210 transitions. [2023-02-14 22:46:53,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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) [2023-02-14 22:46:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 210 transitions. [2023-02-14 22:46:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 22:46:53,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:53,671 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:46:53,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 22:46:53,879 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 [2023-02-14 22:46:53,879 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)] === [2023-02-14 22:46:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash -800532698, now seen corresponding path program 1 times [2023-02-14 22:46:53,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:53,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656449393] [2023-02-14 22:46:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:54,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656449393] [2023-02-14 22:46:54,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656449393] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:46:54,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242035646] [2023-02-14 22:46:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:54,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:46:54,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:46:54,437 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) [2023-02-14 22:46:54,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 22:46:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:54,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 88 conjunts are in the unsatisfiable core [2023-02-14 22:46:54,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:46:54,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,603 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 [2023-02-14 22:46:54,623 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2023-02-14 22:46:54,623 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 95 treesize of output 94 [2023-02-14 22:46:54,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,628 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 32 treesize of output 36 [2023-02-14 22:46:54,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,635 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 [2023-02-14 22:46:54,660 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-14 22:46:54,661 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 [2023-02-14 22:46:54,666 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 [2023-02-14 22:46:54,672 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 33 treesize of output 46 [2023-02-14 22:46:54,688 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 [2023-02-14 22:46:54,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,742 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 45 treesize of output 42 [2023-02-14 22:46:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,755 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-14 22:46:54,755 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 94 treesize of output 76 [2023-02-14 22:46:54,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,772 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-02-14 22:46:54,772 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 33 treesize of output 37 [2023-02-14 22:46:54,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-02-14 22:46:54,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:46:54,849 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 45 treesize of output 42 [2023-02-14 22:46:54,857 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-14 22:46:54,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 74 [2023-02-14 22:46:54,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2023-02-14 22:46:55,130 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2023-02-14 22:46:55,130 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 116 treesize of output 62 [2023-02-14 22:46:55,139 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2023-02-14 22:46:55,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 22 [2023-02-14 22:46:55,162 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 [2023-02-14 22:46:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:55,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:46:55,265 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int)) (v_ArrVal_1654 (Array Int Int)) (|ULTIMATE.start_main_~item~0#1.offset| Int)) (= (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1655)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1654))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (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|) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|) 2)) (select (select .cse0 .cse1) .cse2)) (+ 8 (select (select .cse3 .cse1) .cse2))))) 2)) is different from false [2023-02-14 22:46:55,275 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:46:55,275 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 59 treesize of output 63 [2023-02-14 22:46:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:55,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242035646] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:46:55,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:46:55,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-02-14 22:46:55,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140048313] [2023-02-14 22:46:55,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:46:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-14 22:46:55,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:46:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-14 22:46:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=402, Unknown=1, NotChecked=40, Total=506 [2023-02-14 22:46:55,348 INFO L87 Difference]: Start difference. First operand 168 states and 210 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 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) [2023-02-14 22:46:56,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:46:56,868 INFO L93 Difference]: Finished difference Result 325 states and 407 transitions. [2023-02-14 22:46:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-14 22:46:56,869 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 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) Word has length 21 [2023-02-14 22:46:56,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:46:56,870 INFO L225 Difference]: With dead ends: 325 [2023-02-14 22:46:56,870 INFO L226 Difference]: Without dead ends: 290 [2023-02-14 22:46:56,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=956, Unknown=1, NotChecked=66, Total=1260 [2023-02-14 22:46:56,871 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 308 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-14 22:46:56,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 457 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 750 Invalid, 0 Unknown, 130 Unchecked, 0.9s Time] [2023-02-14 22:46:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-02-14 22:46:56,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 204. [2023-02-14 22:46:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 202 states have (on average 1.2673267326732673) internal successors, (256), 203 states have internal predecessors, (256), 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) [2023-02-14 22:46:56,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 256 transitions. [2023-02-14 22:46:56,903 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 256 transitions. Word has length 21 [2023-02-14 22:46:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:46:56,904 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 256 transitions. [2023-02-14 22:46:56,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 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) [2023-02-14 22:46:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 256 transitions. [2023-02-14 22:46:56,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 22:46:56,905 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:46:56,905 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] [2023-02-14 22:46:56,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-14 22:46:57,109 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 [2023-02-14 22:46:57,110 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)] === [2023-02-14 22:46:57,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:46:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash -962615628, now seen corresponding path program 1 times [2023-02-14 22:46:57,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:46:57,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999591988] [2023-02-14 22:46:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:57,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:46:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:57,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:46:57,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999591988] [2023-02-14 22:46:57,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999591988] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:46:57,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663887819] [2023-02-14 22:46:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:46:57,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:46:57,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:46:57,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 22:46:57,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 22:46:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:46:57,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 62 conjunts are in the unsatisfiable core [2023-02-14 22:46:57,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:46:57,943 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-02-14 22:46:57,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 23 [2023-02-14 22:46:57,988 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-02-14 22:46:57,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 22:46:58,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 22:46:58,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 22:46:58,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2023-02-14 22:46:58,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 22:46:58,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-02-14 22:46:58,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2023-02-14 22:46:58,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2023-02-14 22:46:58,257 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 26 treesize of output 10 [2023-02-14 22:46:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:46:58,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:46:58,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 160 [2023-02-14 22:46:58,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 274 [2023-02-14 22:47:09,158 WARN L233 SmtUtils]: Spent 10.17s on a formula simplification. DAG size of input: 70 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:47:09,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2023-02-14 22:47:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:47:09,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663887819] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:47:09,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:47:09,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 29 [2023-02-14 22:47:09,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629037821] [2023-02-14 22:47:09,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:47:09,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-14 22:47:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:47:09,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-14 22:47:09,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2023-02-14 22:47:09,519 INFO L87 Difference]: Start difference. First operand 204 states and 256 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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) [2023-02-14 22:47:11,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:47:11,239 INFO L93 Difference]: Finished difference Result 376 states and 474 transitions. [2023-02-14 22:47:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-14 22:47:11,240 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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 24 [2023-02-14 22:47:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:47:11,241 INFO L225 Difference]: With dead ends: 376 [2023-02-14 22:47:11,241 INFO L226 Difference]: Without dead ends: 339 [2023-02-14 22:47:11,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=607, Invalid=2149, Unknown=0, NotChecked=0, Total=2756 [2023-02-14 22:47:11,242 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 567 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-14 22:47:11,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 507 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-14 22:47:11,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-02-14 22:47:11,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 234. [2023-02-14 22:47:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 232 states have (on average 1.271551724137931) internal successors, (295), 233 states have internal predecessors, (295), 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) [2023-02-14 22:47:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 295 transitions. [2023-02-14 22:47:11,283 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 295 transitions. Word has length 24 [2023-02-14 22:47:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:47:11,283 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 295 transitions. [2023-02-14 22:47:11,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 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) [2023-02-14 22:47:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 295 transitions. [2023-02-14 22:47:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 22:47:11,285 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:47:11,285 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:47:11,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-14 22:47:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-14 22:47:11,490 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-14 22:47:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:47:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1317906679, now seen corresponding path program 3 times [2023-02-14 22:47:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:47:11,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414202803] [2023-02-14 22:47:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:47:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:47:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:47:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:47:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:47:12,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414202803] [2023-02-14 22:47:12,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414202803] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:47:12,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052207889] [2023-02-14 22:47:12,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 22:47:12,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:47:12,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:47:12,123 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 22:47:12,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 22:47:12,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-14 22:47:12,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:47:12,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 79 conjunts are in the unsatisfiable core [2023-02-14 22:47:12,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:47:12,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:12,970 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 [2023-02-14 22:47:12,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:12,974 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 [2023-02-14 22:47:12,994 INFO L321 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2023-02-14 22:47:12,994 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 [2023-02-14 22:47:12,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:13,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:13,000 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 42 treesize of output 44 [2023-02-14 22:47:13,005 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 [2023-02-14 22:47:13,007 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 [2023-02-14 22:47:13,015 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-14 22:47:13,015 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 [2023-02-14 22:47:13,022 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 [2023-02-14 22:47:13,027 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 [2023-02-14 22:47:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:13,108 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-14 22:47:13,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 62 [2023-02-14 22:47:13,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:13,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:13,114 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 0 case distinctions, treesize of input 65 treesize of output 58 [2023-02-14 22:47:13,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:13,237 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-14 22:47:13,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 65 [2023-02-14 22:47:13,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:13,247 INFO L321 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2023-02-14 22:47:13,247 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 1 case distinctions, treesize of input 61 treesize of output 65 [2023-02-14 22:47:13,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:13,375 INFO L321 Elim1Store]: treesize reduction 200, result has 18.0 percent of original size [2023-02-14 22:47:13,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 82 [2023-02-14 22:47:13,396 INFO L321 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2023-02-14 22:47:13,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 72 [2023-02-14 22:47:13,502 INFO L321 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2023-02-14 22:47:13,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 74 [2023-02-14 22:47:13,513 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2023-02-14 22:47:13,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 28 [2023-02-14 22:47:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:47:13,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:47:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:47:13,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052207889] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:47:13,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:47:13,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 20 [2023-02-14 22:47:13,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058174528] [2023-02-14 22:47:13,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:47:13,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 22:47:13,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:47:13,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 22:47:13,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-02-14 22:47:13,846 INFO L87 Difference]: Start difference. First operand 234 states and 295 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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) [2023-02-14 22:47:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:47:14,495 INFO L93 Difference]: Finished difference Result 249 states and 311 transitions. [2023-02-14 22:47:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 22:47:14,496 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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 25 [2023-02-14 22:47:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:47:14,497 INFO L225 Difference]: With dead ends: 249 [2023-02-14 22:47:14,497 INFO L226 Difference]: Without dead ends: 221 [2023-02-14 22:47:14,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-02-14 22:47:14,498 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 17 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 22:47:14,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 238 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-14 22:47:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-02-14 22:47:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2023-02-14 22:47:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 219 states have (on average 1.2831050228310503) internal successors, (281), 220 states have internal predecessors, (281), 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) [2023-02-14 22:47:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 281 transitions. [2023-02-14 22:47:14,533 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 281 transitions. Word has length 25 [2023-02-14 22:47:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:47:14,533 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 281 transitions. [2023-02-14 22:47:14,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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) [2023-02-14 22:47:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 281 transitions. [2023-02-14 22:47:14,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-14 22:47:14,533 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:47:14,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:47:14,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 22:47:14,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-14 22:47:14,740 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-14 22:47:14,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:47:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1702665013, now seen corresponding path program 1 times [2023-02-14 22:47:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:47:14,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001682026] [2023-02-14 22:47:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:47:14,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:47:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:47:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:47:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:47:15,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001682026] [2023-02-14 22:47:15,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001682026] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:47:15,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932479611] [2023-02-14 22:47:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:47:15,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:47:15,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:47:15,261 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 22:47:15,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 22:47:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:47:15,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 82 conjunts are in the unsatisfiable core [2023-02-14 22:47:15,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:47:15,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:15,456 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 [2023-02-14 22:47:15,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:15,460 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 32 treesize of output 36 [2023-02-14 22:47:15,476 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-02-14 22:47:15,477 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 69 treesize of output 68 [2023-02-14 22:47:15,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:15,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:15,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:15,482 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 [2023-02-14 22:47:15,484 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 [2023-02-14 22:47:15,491 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 22:47:15,491 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 35 treesize of output 27 [2023-02-14 22:47:15,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:15,538 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-02-14 22:47:15,539 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 49 [2023-02-14 22:47:15,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:15,575 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-14 22:47:15,575 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 2 case distinctions, treesize of input 42 treesize of output 50 [2023-02-14 22:47:15,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:15,655 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:47:15,664 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-02-14 22:47:15,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 83 [2023-02-14 22:47:15,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:15,670 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:47:15,714 INFO L321 Elim1Store]: treesize reduction 106, result has 41.8 percent of original size [2023-02-14 22:47:15,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 89 treesize of output 154 [2023-02-14 22:47:16,537 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-02-14 22:47:16,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 95 treesize of output 97 [2023-02-14 22:47:16,557 INFO L321 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-02-14 22:47:16,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 79 [2023-02-14 22:47:16,651 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 22 treesize of output 10 [2023-02-14 22:47:16,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:47:16,653 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 [2023-02-14 22:47:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:47:16,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:47:16,677 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4))) (and (forall ((v_ArrVal_2302 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bcki~0#1.base| v_ArrVal_2302) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_2303 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bcki~0#1.base| v_ArrVal_2303) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse0) 0)))) is different from false [2023-02-14 22:47:17,060 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4))) (and (forall ((|v_ULTIMATE.start_main_~item~0#1.base_47| Int)) (or (forall ((v_ArrVal_2303 (Array Int Int)) (v_ArrVal_2299 Int)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_47| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_47|) 0 0) 4 v_ArrVal_2299)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2303)) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_2298 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_47| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_47|) 0 0) 4 v_ArrVal_2298)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)))) (forall ((v_ArrVal_2303 (Array Int Int)) (|v_ULTIMATE.start_main_~item~0#1.base_47| Int) (v_ArrVal_2299 Int)) (let ((.cse3 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_47| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_47|) 0 0) 4 v_ArrVal_2299)))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (or (= .cse2 0) (= (select (select (store .cse3 .cse2 v_ArrVal_2303) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse1) 0))))) (forall ((v_ArrVal_2298 Int) (v_ArrVal_2302 (Array Int Int)) (|v_ULTIMATE.start_main_~item~0#1.base_47| Int) (v_ArrVal_2299 Int)) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_47| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_47|) 0 0) 4 v_ArrVal_2298)))) (or (= (select (select (store .cse4 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_47| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_47|) 0 0) 4 v_ArrVal_2299)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) v_ArrVal_2302) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse1) 0) (= (select (select .cse4 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)))) (forall ((v_ArrVal_2298 Int) (v_ArrVal_2302 (Array Int Int)) (|v_ULTIMATE.start_main_~item~0#1.base_47| Int) (v_ArrVal_2299 Int)) (let ((.cse5 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_47| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_47|) 0 0) 4 v_ArrVal_2299)) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (or (= (select (select (store (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_47| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_47|) 0 0) 4 v_ArrVal_2298)) .cse5 v_ArrVal_2302) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse1) 0) (= .cse5 0)))))) is different from false [2023-02-14 22:47:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-14 22:47:17,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932479611] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:47:17,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:47:17,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 23 [2023-02-14 22:47:17,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150575966] [2023-02-14 22:47:17,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:47:17,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-14 22:47:17,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:47:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-14 22:47:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=341, Unknown=10, NotChecked=78, Total=506 [2023-02-14 22:47:17,095 INFO L87 Difference]: Start difference. First operand 221 states and 281 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 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) [2023-02-14 22:47:18,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:47:18,958 INFO L93 Difference]: Finished difference Result 295 states and 373 transitions. [2023-02-14 22:47:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-14 22:47:18,958 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-14 22:47:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:47:18,959 INFO L225 Difference]: With dead ends: 295 [2023-02-14 22:47:18,959 INFO L226 Difference]: Without dead ends: 284 [2023-02-14 22:47:18,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=253, Invalid=863, Unknown=14, NotChecked=130, Total=1260 [2023-02-14 22:47:18,960 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 528 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 73 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-14 22:47:18,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 281 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 411 Invalid, 11 Unknown, 218 Unchecked, 0.9s Time] [2023-02-14 22:47:18,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-02-14 22:47:18,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 243. [2023-02-14 22:47:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 1.2863070539419088) internal successors, (310), 242 states have internal predecessors, (310), 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) [2023-02-14 22:47:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 310 transitions. [2023-02-14 22:47:18,999 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 310 transitions. Word has length 27 [2023-02-14 22:47:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:47:19,000 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 310 transitions. [2023-02-14 22:47:19,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 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) [2023-02-14 22:47:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 310 transitions. [2023-02-14 22:47:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-14 22:47:19,000 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:47:19,000 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, 1, 1, 1] [2023-02-14 22:47:19,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-14 22:47:19,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-14 22:47:19,205 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-14 22:47:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:47:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1308386699, now seen corresponding path program 1 times [2023-02-14 22:47:19,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:47:19,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008190556] [2023-02-14 22:47:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:47:19,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:47:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:47:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:47:19,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:47:19,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008190556] [2023-02-14 22:47:19,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008190556] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:47:19,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:47:19,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 22:47:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054966860] [2023-02-14 22:47:19,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:47:19,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 22:47:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:47:19,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 22:47:19,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 22:47:19,752 INFO L87 Difference]: Start difference. First operand 243 states and 310 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:47:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:47:19,998 INFO L93 Difference]: Finished difference Result 291 states and 370 transitions. [2023-02-14 22:47:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 22:47:19,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-14 22:47:19,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:47:19,999 INFO L225 Difference]: With dead ends: 291 [2023-02-14 22:47:20,000 INFO L226 Difference]: Without dead ends: 246 [2023-02-14 22:47:20,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-14 22:47:20,002 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 46 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 22:47:20,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 99 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 22:47:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-14 22:47:20,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2023-02-14 22:47:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 1.2738589211618256) internal successors, (307), 242 states have internal predecessors, (307), 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) [2023-02-14 22:47:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 307 transitions. [2023-02-14 22:47:20,049 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 307 transitions. Word has length 27 [2023-02-14 22:47:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:47:20,050 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 307 transitions. [2023-02-14 22:47:20,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:47:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 307 transitions. [2023-02-14 22:47:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-14 22:47:20,050 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:47:20,050 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:47:20,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-14 22:47:20,051 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-14 22:47:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:47:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1764820376, now seen corresponding path program 1 times [2023-02-14 22:47:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:47:20,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295074708] [2023-02-14 22:47:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:47:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:47:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:47:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:47:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:47:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295074708] [2023-02-14 22:47:20,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295074708] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:47:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142798566] [2023-02-14 22:47:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:47:20,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:47:20,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:47:20,781 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 22:47:20,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-14 22:47:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:47:20,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 110 conjunts are in the unsatisfiable core [2023-02-14 22:47:20,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:47:20,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:20,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:20,998 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 [2023-02-14 22:47:21,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,003 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 [2023-02-14 22:47:21,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,010 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 32 treesize of output 36 [2023-02-14 22:47:21,040 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2023-02-14 22:47:21,040 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 104 treesize of output 99 [2023-02-14 22:47:21,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,046 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 [2023-02-14 22:47:21,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,051 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 23 treesize of output 27 [2023-02-14 22:47:21,069 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-14 22:47:21,070 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 [2023-02-14 22:47:21,076 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 [2023-02-14 22:47:21,082 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 [2023-02-14 22:47:21,190 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-02-14 22:47:21,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 77 [2023-02-14 22:47:21,209 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-02-14 22:47:21,209 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 2 case distinctions, treesize of input 41 treesize of output 50 [2023-02-14 22:47:21,218 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 20 treesize of output 14 [2023-02-14 22:47:21,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,242 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 77 treesize of output 55 [2023-02-14 22:47:21,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,265 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 [2023-02-14 22:47:21,272 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 22:47:21,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-14 22:47:21,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 22:47:21,378 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-02-14 22:47:21,379 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 95 treesize of output 83 [2023-02-14 22:47:21,392 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2023-02-14 22:47:21,393 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 59 [2023-02-14 22:47:21,413 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-14 22:47:21,422 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 [2023-02-14 22:47:21,739 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:47:21,739 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 39 [2023-02-14 22:47:21,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,925 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2023-02-14 22:47:21,926 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 43 [2023-02-14 22:47:21,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:47:21,943 INFO L321 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2023-02-14 22:47:21,943 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 30 treesize of output 32 [2023-02-14 22:47:22,027 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 22 treesize of output 10 [2023-02-14 22:47:22,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 22:47:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 22:47:22,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:47:24,114 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4))) (.cse0 (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4))) (and (forall ((|ULTIMATE.start_main_~bcki~0#1.offset| Int) (|ULTIMATE.start_main_~bcki~0#1.base| Int)) (or (forall ((v_ArrVal_2633 Int)) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~bcki~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~bcki~0#1.base|) (+ 4 |ULTIMATE.start_main_~bcki~0#1.offset|) v_ArrVal_2633)) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse0) 0)) (not (= (select (select |c_#memory_int| |ULTIMATE.start_main_~bcki~0#1.base|) (+ 8 |ULTIMATE.start_main_~bcki~0#1.offset|)) .cse1)))) (forall ((|ULTIMATE.start_main_~bcki~0#1.offset| Int) (|ULTIMATE.start_main_~bcki~0#1.base| Int)) (or (not (= (select (select |c_#memory_int| |ULTIMATE.start_main_~bcki~0#1.base|) (+ 8 |ULTIMATE.start_main_~bcki~0#1.offset|)) .cse1)) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~bcki~0#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~bcki~0#1.base|) (+ 4 |ULTIMATE.start_main_~bcki~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.offset|)) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse0) 0))))) is different from false [2023-02-14 22:47:24,203 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4) 2))) (.cse2 (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4))) (and (forall ((|ULTIMATE.start_main_~bcki~0#1.offset| Int) (|ULTIMATE.start_main_~bcki~0#1.base| Int) (v_ArrVal_2629 (Array Int Int))) (or (not (= 2 (select (select .cse0 |ULTIMATE.start_main_~bcki~0#1.base|) (+ 8 |ULTIMATE.start_main_~bcki~0#1.offset|)))) (forall ((v_ArrVal_2633 Int)) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_2629))) (store .cse1 |ULTIMATE.start_main_~bcki~0#1.base| (store (select .cse1 |ULTIMATE.start_main_~bcki~0#1.base|) (+ 4 |ULTIMATE.start_main_~bcki~0#1.offset|) v_ArrVal_2633))) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse2) 0)))) (forall ((|ULTIMATE.start_main_~bcki~0#1.offset| Int) (v_ArrVal_2631 (Array Int Int)) (|ULTIMATE.start_main_~bcki~0#1.base| Int)) (or (not (= 2 (select (select .cse0 |ULTIMATE.start_main_~bcki~0#1.base|) (+ 8 |ULTIMATE.start_main_~bcki~0#1.offset|)))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_2631))) (store .cse3 |ULTIMATE.start_main_~bcki~0#1.base| (store (select .cse3 |ULTIMATE.start_main_~bcki~0#1.base|) (+ 4 |ULTIMATE.start_main_~bcki~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.offset|))) |c_ULTIMATE.start_main_~bucket~0#1.base|) .cse2) 0))))) is different from false [2023-02-14 22:47:24,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:47:24,221 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 85 treesize of output 86 [2023-02-14 22:47:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-02-14 22:47:24,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142798566] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:47:24,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:47:24,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2023-02-14 22:47:24,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819708632] [2023-02-14 22:47:24,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:47:24,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-14 22:47:24,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:47:24,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-14 22:47:24,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=348, Unknown=2, NotChecked=78, Total=506 [2023-02-14 22:47:24,369 INFO L87 Difference]: Start difference. First operand 243 states and 307 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 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) [2023-02-14 22:47:33,109 WARN L233 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 79 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:47:51,815 WARN L233 SmtUtils]: Spent 10.33s on a formula simplification. DAG size of input: 90 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:48:06,310 WARN L233 SmtUtils]: Spent 14.42s on a formula simplification. DAG size of input: 104 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:48:16,847 WARN L233 SmtUtils]: Spent 10.33s on a formula simplification. DAG size of input: 86 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:48:37,730 WARN L233 SmtUtils]: Spent 20.83s on a formula simplification. DAG size of input: 100 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:48:38,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:48:38,346 INFO L93 Difference]: Finished difference Result 347 states and 435 transitions. [2023-02-14 22:48:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-14 22:48:38,347 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 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 29 [2023-02-14 22:48:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:48:38,348 INFO L225 Difference]: With dead ends: 347 [2023-02-14 22:48:38,348 INFO L226 Difference]: Without dead ends: 242 [2023-02-14 22:48:38,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 75.7s TimeCoverageRelationStatistics Valid=316, Invalid=1093, Unknown=5, NotChecked=146, Total=1560 [2023-02-14 22:48:38,352 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 119 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 34 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-14 22:48:38,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 405 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 540 Invalid, 16 Unknown, 113 Unchecked, 0.6s Time] [2023-02-14 22:48:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-02-14 22:48:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 226. [2023-02-14 22:48:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 224 states have (on average 1.2678571428571428) internal successors, (284), 225 states have internal predecessors, (284), 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) [2023-02-14 22:48:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 284 transitions. [2023-02-14 22:48:38,391 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 284 transitions. Word has length 29 [2023-02-14 22:48:38,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:48:38,391 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 284 transitions. [2023-02-14 22:48:38,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 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) [2023-02-14 22:48:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 284 transitions. [2023-02-14 22:48:38,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-14 22:48:38,392 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:48:38,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:48:38,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-14 22:48:38,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-14 22:48:38,599 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-14 22:48:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:48:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1842471721, now seen corresponding path program 1 times [2023-02-14 22:48:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:48:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405637264] [2023-02-14 22:48:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:48:38,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:48:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:48:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:48:39,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:48:39,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405637264] [2023-02-14 22:48:39,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405637264] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:48:39,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184631304] [2023-02-14 22:48:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:48:39,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:48:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:48:39,418 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 22:48:39,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-14 22:48:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:48:39,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-14 22:48:39,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:48:39,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 22:48:39,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-14 22:48:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:48:39,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 22:48:39,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184631304] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:48:39,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 22:48:39,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-02-14 22:48:39,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562493654] [2023-02-14 22:48:39,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:48:39,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 22:48:39,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:48:39,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 22:48:39,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-02-14 22:48:39,761 INFO L87 Difference]: Start difference. First operand 226 states and 284 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:48:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:48:40,017 INFO L93 Difference]: Finished difference Result 256 states and 325 transitions. [2023-02-14 22:48:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 22:48:40,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-14 22:48:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:48:40,018 INFO L225 Difference]: With dead ends: 256 [2023-02-14 22:48:40,018 INFO L226 Difference]: Without dead ends: 245 [2023-02-14 22:48:40,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-02-14 22:48:40,019 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 56 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 22:48:40,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 116 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 22:48:40,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-02-14 22:48:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 231. [2023-02-14 22:48:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 229 states have (on average 1.2663755458515285) internal successors, (290), 230 states have internal predecessors, (290), 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) [2023-02-14 22:48:40,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 290 transitions. [2023-02-14 22:48:40,065 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 290 transitions. Word has length 29 [2023-02-14 22:48:40,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:48:40,065 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 290 transitions. [2023-02-14 22:48:40,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:48:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 290 transitions. [2023-02-14 22:48:40,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-14 22:48:40,066 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:48:40,066 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:48:40,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-14 22:48:40,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-14 22:48:40,271 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-14 22:48:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:48:40,272 INFO L85 PathProgramCache]: Analyzing trace with hash -461850395, now seen corresponding path program 1 times [2023-02-14 22:48:40,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:48:40,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911391911] [2023-02-14 22:48:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:48:40,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:48:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:48:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:48:40,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:48:40,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911391911] [2023-02-14 22:48:40,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911391911] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:48:40,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905153454] [2023-02-14 22:48:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:48:40,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:48:40,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:48:40,896 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 22:48:40,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-14 22:48:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:48:41,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-14 22:48:41,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:48:41,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-14 22:48:41,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-14 22:48:41,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:41,177 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 21 treesize of output 20 [2023-02-14 22:48:41,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:41,182 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 21 treesize of output 20 [2023-02-14 22:48:41,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:41,301 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 21 treesize of output 20 [2023-02-14 22:48:41,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:41,304 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 27 treesize of output 26 [2023-02-14 22:48:41,355 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:48:41,355 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 1 case distinctions, treesize of input 41 treesize of output 31 [2023-02-14 22:48:41,359 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:48:41,359 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-02-14 22:48:41,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 22:48:41,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 22:48:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:48:41,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:48:41,726 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:48:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:48:41,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905153454] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:48:41,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:48:41,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2023-02-14 22:48:41,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107899076] [2023-02-14 22:48:41,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:48:41,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-14 22:48:41,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:48:41,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-14 22:48:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-02-14 22:48:41,744 INFO L87 Difference]: Start difference. First operand 231 states and 290 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 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) [2023-02-14 22:48:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:48:42,847 INFO L93 Difference]: Finished difference Result 281 states and 352 transitions. [2023-02-14 22:48:42,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-14 22:48:42,847 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 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 29 [2023-02-14 22:48:42,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:48:42,848 INFO L225 Difference]: With dead ends: 281 [2023-02-14 22:48:42,848 INFO L226 Difference]: Without dead ends: 270 [2023-02-14 22:48:42,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2023-02-14 22:48:42,849 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 362 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 22:48:42,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 219 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-14 22:48:42,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-02-14 22:48:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 245. [2023-02-14 22:48:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 243 states have (on average 1.2674897119341564) internal successors, (308), 244 states have internal predecessors, (308), 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) [2023-02-14 22:48:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 308 transitions. [2023-02-14 22:48:42,892 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 308 transitions. Word has length 29 [2023-02-14 22:48:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:48:42,892 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 308 transitions. [2023-02-14 22:48:42,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 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) [2023-02-14 22:48:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 308 transitions. [2023-02-14 22:48:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-14 22:48:42,893 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:48:42,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:48:42,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-14 22:48:43,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-14 22:48:43,098 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-02-14 22:48:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:48:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash -993211820, now seen corresponding path program 1 times [2023-02-14 22:48:43,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:48:43,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438787913] [2023-02-14 22:48:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:48:43,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:48:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:48:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:48:43,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:48:43,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438787913] [2023-02-14 22:48:43,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438787913] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:48:43,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343935569] [2023-02-14 22:48:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:48:43,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:48:43,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:48:43,601 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 22:48:43,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-14 22:48:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:48:43,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 117 conjunts are in the unsatisfiable core [2023-02-14 22:48:43,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:48:43,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:43,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:43,861 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 [2023-02-14 22:48:43,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:43,867 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 [2023-02-14 22:48:43,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:43,872 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 32 treesize of output 36 [2023-02-14 22:48:43,901 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-02-14 22:48:43,901 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 [2023-02-14 22:48:43,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:43,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:43,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:43,909 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 [2023-02-14 22:48:43,911 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 [2023-02-14 22:48:43,939 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2023-02-14 22:48:43,939 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 [2023-02-14 22:48:43,946 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 23 treesize of output 27 [2023-02-14 22:48:43,996 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 22:48:43,996 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 [2023-02-14 22:48:44,001 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 [2023-02-14 22:48:44,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:44,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:44,012 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-14 22:48:44,012 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 1 case distinctions, treesize of input 50 treesize of output 58 [2023-02-14 22:48:44,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:44,025 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-02-14 22:48:44,025 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 54 [2023-02-14 22:48:44,032 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 22:48:44,032 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 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-14 22:48:44,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:44,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:44,129 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:48:44,129 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:48:44,175 INFO L321 Elim1Store]: treesize reduction 118, result has 35.2 percent of original size [2023-02-14 22:48:44,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 152 [2023-02-14 22:48:44,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:44,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:44,183 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:48:44,192 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-02-14 22:48:44,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 100 [2023-02-14 22:48:44,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:44,270 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 27 treesize of output 26 [2023-02-14 22:48:44,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:48:44,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:44,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:48:44,653 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 17 [2023-02-14 22:48:45,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:45,262 INFO L321 Elim1Store]: treesize reduction 74, result has 32.7 percent of original size [2023-02-14 22:48:45,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 126 [2023-02-14 22:48:45,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:48:45,303 INFO L321 Elim1Store]: treesize reduction 244, result has 14.4 percent of original size [2023-02-14 22:48:45,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 14 case distinctions, treesize of input 76 treesize of output 74 [2023-02-14 22:48:45,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:48:45,637 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 145 treesize of output 117 [2023-02-14 22:48:45,776 INFO L321 Elim1Store]: treesize reduction 96, result has 62.1 percent of original size [2023-02-14 22:48:45,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 27 case distinctions, treesize of input 124 treesize of output 230 [2023-02-14 22:48:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:48:46,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:48:48,223 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:48:48,224 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 15 treesize of output 19 [2023-02-14 22:48:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:48:53,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343935569] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:48:53,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:48:53,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 33 [2023-02-14 22:48:53,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125948123] [2023-02-14 22:48:53,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:48:53,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-14 22:48:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:48:53,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-14 22:48:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2023-02-14 22:48:53,295 INFO L87 Difference]: Start difference. First operand 245 states and 308 transitions. Second operand has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 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) [2023-02-14 22:49:19,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-14 22:49:27,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-14 22:49:29,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-14 22:49:31,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 22:49:39,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 22:49:46,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 22:49:54,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 22:49:57,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 22:50:08,684 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification that was a NOOP. DAG size: 150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:50:11,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 22:50:24,106 WARN L233 SmtUtils]: Spent 7.63s on a formula simplification that was a NOOP. DAG size: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:50:27,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 22:50:41,144 WARN L233 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 150 DAG size of output: 121 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:50:43,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 22:50:47,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 22:51:09,104 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 240 DAG size of output: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)