./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/running_example.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:35:15,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:35:15,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:35:15,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:35:15,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:35:15,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:35:15,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:35:15,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:35:15,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:35:15,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:35:15,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:35:15,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:35:15,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:35:15,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:35:15,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:35:15,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:35:15,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:35:15,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:35:15,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:35:15,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:35:15,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:35:15,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:35:15,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:35:15,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:35:15,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:35:15,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:35:15,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:35:15,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:35:15,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:35:15,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:35:15,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:35:15,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:35:15,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:35:15,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:35:15,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:35:15,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:35:15,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:35:15,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:35:15,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:35:15,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:35:15,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:35:15,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:35:15,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:35:15,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:35:15,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:35:15,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:35:15,480 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:35:15,481 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:35:15,481 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:35:15,481 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:35:15,482 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:35:15,482 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:35:15,483 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:35:15,483 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:35:15,483 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:35:15,484 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:35:15,484 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:35:15,485 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:35:15,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:35:15,486 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:35:15,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:35:15,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:35:15,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:35:15,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:35:15,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:35:15,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:35:15,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:35:15,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:35:15,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:35:15,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:35:15,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:35:15,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:35:15,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:35:15,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:35:15,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:35:15,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:35:15,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:35:15,491 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:35:15,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:35:15,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:35:15,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:35:15,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:35:15,492 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f [2021-11-19 13:35:15,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:35:15,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:35:15,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:35:15,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:35:15,773 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:35:15,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/heap-data/running_example.i [2021-11-19 13:35:15,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data/9bdd7700f/59fa1d775b4b4d61ab7d91575d75418d/FLAG5033fe20b [2021-11-19 13:35:16,369 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:35:16,370 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/sv-benchmarks/c/heap-data/running_example.i [2021-11-19 13:35:16,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data/9bdd7700f/59fa1d775b4b4d61ab7d91575d75418d/FLAG5033fe20b [2021-11-19 13:35:16,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data/9bdd7700f/59fa1d775b4b4d61ab7d91575d75418d [2021-11-19 13:35:16,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:35:16,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:35:16,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:35:16,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:35:16,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:35:16,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:35:16" (1/1) ... [2021-11-19 13:35:16,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8dc822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:16, skipping insertion in model container [2021-11-19 13:35:16,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:35:16" (1/1) ... [2021-11-19 13:35:16,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:35:16,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:35:17,084 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-11-19 13:35:17,093 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:35:17,104 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:35:17,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-11-19 13:35:17,156 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:35:17,185 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:35:17,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17 WrapperNode [2021-11-19 13:35:17,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:35:17,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:35:17,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:35:17,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:35:17,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,229 INFO L137 Inliner]: procedures = 121, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 72 [2021-11-19 13:35:17,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:35:17,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:35:17,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:35:17,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:35:17,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:35:17,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:35:17,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:35:17,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:35:17,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (1/1) ... [2021-11-19 13:35:17,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:35:17,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:17,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:35:17,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:35:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 13:35:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 13:35:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:35:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:35:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:35:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:35:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:35:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:35:17,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:35:17,514 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:35:17,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:35:17,692 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:35:17,725 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:35:17,726 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 13:35:17,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:35:17 BoogieIcfgContainer [2021-11-19 13:35:17,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:35:17,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:35:17,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:35:17,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:35:17,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:35:16" (1/3) ... [2021-11-19 13:35:17,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b53a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:35:17, skipping insertion in model container [2021-11-19 13:35:17,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:17" (2/3) ... [2021-11-19 13:35:17,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b53a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:35:17, skipping insertion in model container [2021-11-19 13:35:17,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:35:17" (3/3) ... [2021-11-19 13:35:17,738 INFO L111 eAbstractionObserver]: Analyzing ICFG running_example.i [2021-11-19 13:35:17,743 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:35:17,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:35:17,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:35:17,797 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:35:17,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:35:17,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) [2021-11-19 13:35:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 13:35:17,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:17,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 13:35:17,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:17,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:17,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1470856896, now seen corresponding path program 1 times [2021-11-19 13:35:17,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:17,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447763404] [2021-11-19 13:35:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:17,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:18,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:18,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447763404] [2021-11-19 13:35:18,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447763404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:18,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:18,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:35:18,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640557276] [2021-11-19 13:35:18,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:18,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:35:18,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:18,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:35:18,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:35:18,050 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:18,086 INFO L93 Difference]: Finished difference Result 18 states and 26 transitions. [2021-11-19 13:35:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:35:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 13:35:18,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:18,098 INFO L225 Difference]: With dead ends: 18 [2021-11-19 13:35:18,098 INFO L226 Difference]: Without dead ends: 11 [2021-11-19 13:35:18,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:35:18,108 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:18,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-19 13:35:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-19 13:35:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-11-19 13:35:18,146 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 6 [2021-11-19 13:35:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:18,147 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-11-19 13:35:18,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-11-19 13:35:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:35:18,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:18,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:18,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:35:18,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:18,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:18,154 INFO L85 PathProgramCache]: Analyzing trace with hash 237321750, now seen corresponding path program 1 times [2021-11-19 13:35:18,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:18,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306918196] [2021-11-19 13:35:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:18,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:18,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:18,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306918196] [2021-11-19 13:35:18,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306918196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:18,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:18,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:35:18,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689997965] [2021-11-19 13:35:18,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:18,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:35:18,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:18,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:35:18,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:35:18,294 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 5 states, 5 states have (on average 1.6) 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) [2021-11-19 13:35:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:18,370 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2021-11-19 13:35:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:35:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) 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 [2021-11-19 13:35:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:18,372 INFO L225 Difference]: With dead ends: 22 [2021-11-19 13:35:18,372 INFO L226 Difference]: Without dead ends: 20 [2021-11-19 13:35:18,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:18,379 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:18,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-19 13:35:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-11-19 13:35:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2021-11-19 13:35:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-11-19 13:35:18,396 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 8 [2021-11-19 13:35:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:18,398 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-19 13:35:18,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) 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) [2021-11-19 13:35:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-11-19 13:35:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:35:18,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:18,403 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:18,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:35:18,404 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:18,405 INFO L85 PathProgramCache]: Analyzing trace with hash 540596448, now seen corresponding path program 1 times [2021-11-19 13:35:18,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:18,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923343468] [2021-11-19 13:35:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:18,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:18,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:18,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923343468] [2021-11-19 13:35:18,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923343468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:35:18,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364576209] [2021-11-19 13:35:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:18,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:18,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:18,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:35:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:18,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 13:35:18,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:18,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:18,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-19 13:35:18,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:18,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:18,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-19 13:35:19,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-19 13:35:19,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2021-11-19 13:35:19,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2021-11-19 13:35:19,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-19 13:35:19,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-19 13:35:19,321 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 13:35:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:19,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:19,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-19 13:35:19,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [928079670] [2021-11-19 13:35:19,459 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-19 13:35:19,460 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:35:19,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:35:19,471 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:35:19,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:35:19,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,517 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:35:19,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 13:35:19,520 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:35:19,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 13:35:19,523 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:35:19,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-19 13:35:19,526 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:35:19,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-19 13:35:19,531 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:35:19,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,535 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:35:19,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:35:19,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 13:35:19,540 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:35:19,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,544 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:35:19,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 13:35:19,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-19 13:35:19,546 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:35:19,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:19,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:35:19,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-19 13:35:19,563 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6950b92e at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 13:35:19,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:35:19,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-19 13:35:19,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210172584] [2021-11-19 13:35:19,572 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:19,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:35:19,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:19,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:35:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:19,575 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-19 13:35:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:35:19,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:19,583 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:19,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:19,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:19,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:19,810 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6950b92e at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 13:35:19,812 INFO L158 Benchmark]: Toolchain (without parser) took 3103.72ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 73.7MB in the beginning and 61.6MB in the end (delta: 12.1MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2021-11-19 13:35:19,812 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:35:19,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.89ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 62.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:35:19,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.11ms. Allocated memory is still 96.5MB. Free memory was 62.1MB in the beginning and 60.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:35:19,813 INFO L158 Benchmark]: Boogie Preprocessor took 28.59ms. Allocated memory is still 96.5MB. Free memory was 60.3MB in the beginning and 58.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:35:19,813 INFO L158 Benchmark]: RCFGBuilder took 468.74ms. Allocated memory is still 96.5MB. Free memory was 58.9MB in the beginning and 45.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 13:35:19,813 INFO L158 Benchmark]: TraceAbstraction took 2080.93ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 45.2MB in the beginning and 61.6MB in the end (delta: -16.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-19 13:35:19,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 476.89ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 62.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.11ms. Allocated memory is still 96.5MB. Free memory was 62.1MB in the beginning and 60.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.59ms. Allocated memory is still 96.5MB. Free memory was 60.3MB in the beginning and 58.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 468.74ms. Allocated memory is still 96.5MB. Free memory was 58.9MB in the beginning and 45.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2080.93ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 45.2MB in the beginning and 61.6MB in the end (delta: -16.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6950b92e de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6950b92e: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-19 13:35:19,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:35:22,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:35:22,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:35:22,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:35:22,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:35:22,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:35:22,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:35:22,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:35:22,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:35:22,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:35:22,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:35:22,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:35:22,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:35:22,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:35:22,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:35:22,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:35:22,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:35:22,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:35:22,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:35:22,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:35:22,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:35:22,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:35:22,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:35:22,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:35:22,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:35:22,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:35:22,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:35:22,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:35:22,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:35:22,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:35:22,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:35:22,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:35:22,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:35:22,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:35:22,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:35:22,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:35:22,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:35:22,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:35:22,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:35:22,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:35:22,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:35:22,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:35:22,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:35:22,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:35:22,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:35:22,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:35:22,517 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:35:22,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:35:22,517 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:35:22,517 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:35:22,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:35:22,518 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:35:22,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:35:22,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:35:22,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:35:22,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:35:22,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:35:22,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:35:22,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:35:22,522 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:35:22,522 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:35:22,522 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:35:22,522 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:35:22,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:35:22,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:35:22,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:35:22,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:35:22,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:35:22,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:35:22,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:35:22,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:35:22,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:35:22,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:35:22,524 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:35:22,525 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:22,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:35:22,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:35:22,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:35:22,526 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f [2021-11-19 13:35:22,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:35:22,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:35:22,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:35:22,948 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:35:22,949 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:35:22,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/heap-data/running_example.i [2021-11-19 13:35:23,030 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data/e57d41936/1fd1a867963b4a138fbbad641eb4922d/FLAG00ee3dccc [2021-11-19 13:35:23,700 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:35:23,701 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/sv-benchmarks/c/heap-data/running_example.i [2021-11-19 13:35:23,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data/e57d41936/1fd1a867963b4a138fbbad641eb4922d/FLAG00ee3dccc [2021-11-19 13:35:23,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/data/e57d41936/1fd1a867963b4a138fbbad641eb4922d [2021-11-19 13:35:23,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:35:23,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:35:24,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:35:24,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:35:24,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:35:24,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:35:23" (1/1) ... [2021-11-19 13:35:24,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547704ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24, skipping insertion in model container [2021-11-19 13:35:24,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:35:23" (1/1) ... [2021-11-19 13:35:24,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:35:24,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:35:24,447 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-11-19 13:35:24,457 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:35:24,472 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:35:24,523 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-11-19 13:35:24,525 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:35:24,577 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:35:24,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24 WrapperNode [2021-11-19 13:35:24,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:35:24,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:35:24,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:35:24,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:35:24,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,647 INFO L137 Inliner]: procedures = 124, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2021-11-19 13:35:24,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:35:24,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:35:24,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:35:24,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:35:24,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:35:24,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:35:24,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:35:24,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:35:24,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (1/1) ... [2021-11-19 13:35:24,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:35:24,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:24,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:35:24,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:35:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:35:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:35:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:35:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:35:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:35:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:35:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:35:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:35:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:35:24,955 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:35:24,957 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:35:25,310 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:35:25,316 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:35:25,316 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 13:35:25,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:35:25 BoogieIcfgContainer [2021-11-19 13:35:25,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:35:25,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:35:25,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:35:25,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:35:25,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:35:23" (1/3) ... [2021-11-19 13:35:25,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537a1711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:35:25, skipping insertion in model container [2021-11-19 13:35:25,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:24" (2/3) ... [2021-11-19 13:35:25,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537a1711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:35:25, skipping insertion in model container [2021-11-19 13:35:25,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:35:25" (3/3) ... [2021-11-19 13:35:25,327 INFO L111 eAbstractionObserver]: Analyzing ICFG running_example.i [2021-11-19 13:35:25,333 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:35:25,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:35:25,382 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:35:25,389 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:35:25,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:35:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:25,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:35:25,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:25,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:25,413 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:25,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:25,422 INFO L85 PathProgramCache]: Analyzing trace with hash 508893296, now seen corresponding path program 1 times [2021-11-19 13:35:25,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:25,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337265094] [2021-11-19 13:35:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:25,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:25,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:25,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:25,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:35:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:25,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:35:25,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:25,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:25,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:25,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337265094] [2021-11-19 13:35:25,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337265094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:25,606 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:25,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:35:25,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544381081] [2021-11-19 13:35:25,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:25,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:35:25,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:25,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:35:25,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:35:25,643 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-19 13:35:25,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:25,657 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2021-11-19 13:35:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:35:25,660 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2021-11-19 13:35:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:25,668 INFO L225 Difference]: With dead ends: 26 [2021-11-19 13:35:25,668 INFO L226 Difference]: Without dead ends: 14 [2021-11-19 13:35:25,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:35:25,675 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:25,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-19 13:35:25,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-19 13:35:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-11-19 13:35:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2021-11-19 13:35:25,709 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 8 [2021-11-19 13:35:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:25,709 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-11-19 13:35:25,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-19 13:35:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2021-11-19 13:35:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 13:35:25,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:25,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:25,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:25,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:35:25,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash 307872697, now seen corresponding path program 1 times [2021-11-19 13:35:25,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:25,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106088637] [2021-11-19 13:35:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:25,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:25,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:25,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:25,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:35:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:26,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:35:26,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:26,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:26,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:35:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:26,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:26,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:26,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106088637] [2021-11-19 13:35:26,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106088637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:26,320 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:26,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 13:35:26,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712834821] [2021-11-19 13:35:26,321 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:26,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:35:26,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:26,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:35:26,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:26,324 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-11-19 13:35:26,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:26,994 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2021-11-19 13:35:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:35:26,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 [2021-11-19 13:35:26,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:26,998 INFO L225 Difference]: With dead ends: 52 [2021-11-19 13:35:26,998 INFO L226 Difference]: Without dead ends: 43 [2021-11-19 13:35:26,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:35:27,000 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:27,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 80 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:35:27,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-19 13:35:27,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2021-11-19 13:35:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2021-11-19 13:35:27,013 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 9 [2021-11-19 13:35:27,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:27,014 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2021-11-19 13:35:27,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-11-19 13:35:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2021-11-19 13:35:27,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 13:35:27,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:27,015 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:27,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 13:35:27,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:35:27,216 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:27,217 INFO L85 PathProgramCache]: Analyzing trace with hash -44654956, now seen corresponding path program 1 times [2021-11-19 13:35:27,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:27,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191902890] [2021-11-19 13:35:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:27,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:27,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:27,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:27,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:35:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:27,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:35:27,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:27,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:27,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:35:27,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:27,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-19 13:35:27,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:27,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-19 13:35:27,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:27,664 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-11-19 13:35:27,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 52 [2021-11-19 13:35:27,679 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:35:27,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-11-19 13:35:27,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:35:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:27,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:27,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:27,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:35:27,874 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:27,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:35:29,931 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_17| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_17| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_4)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_17|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_17|) v_DerPreprocessor_3) |v_ULTIMATE.start_main_~p~0#1.offset_17| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_17|)))))) is different from false [2021-11-19 13:35:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 13:35:30,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:30,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191902890] [2021-11-19 13:35:30,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191902890] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:30,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [625407648] [2021-11-19 13:35:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:30,139 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:30,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:35:30,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:35:30,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-19 13:35:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:30,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:35:30,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:30,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:30,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:35:30,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:30,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-19 13:35:30,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:30,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-19 13:35:30,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:30,581 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-11-19 13:35:30,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 52 [2021-11-19 13:35:30,604 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:35:30,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-11-19 13:35:30,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:35:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:30,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:30,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:30,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-19 13:35:30,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:30,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-19 13:35:32,845 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_20| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_20| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_20|))))) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_8)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_20| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_20|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_20|) v_DerPreprocessor_7) |v_ULTIMATE.start_main_~p~0#1.offset_20| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)))) is different from false [2021-11-19 13:35:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 13:35:32,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [625407648] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:32,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606848497] [2021-11-19 13:35:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:32,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:32,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:32,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:33,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 13:35:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:33,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:35:33,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:33,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:35:33,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:33,196 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:33,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-19 13:35:33,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:33,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-19 13:35:33,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:33,330 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-11-19 13:35:33,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 53 [2021-11-19 13:35:33,350 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:35:33,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-19 13:35:33,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:35:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:33,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:33,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:33,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:35:33,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:33,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:35:35,534 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_23| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_23| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_23|)))) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_12)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_23| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_23|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_23|) v_DerPreprocessor_11) |v_ULTIMATE.start_main_~p~0#1.offset_23| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)))) is different from false [2021-11-19 13:35:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 13:35:35,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606848497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:35,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:35:35,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2021-11-19 13:35:35,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601116324] [2021-11-19 13:35:35,664 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:35,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:35:35,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:35:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=42, Unknown=3, NotChecked=42, Total=110 [2021-11-19 13:35:35,666 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2021-11-19 13:35:36,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:36,777 INFO L93 Difference]: Finished difference Result 69 states and 97 transitions. [2021-11-19 13:35:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:35:36,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 12 [2021-11-19 13:35:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:36,780 INFO L225 Difference]: With dead ends: 69 [2021-11-19 13:35:36,781 INFO L226 Difference]: Without dead ends: 60 [2021-11-19 13:35:36,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=82, Invalid=137, Unknown=3, NotChecked=84, Total=306 [2021-11-19 13:35:36,782 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:36,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 97 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 98 Invalid, 0 Unknown, 132 Unchecked, 0.8s Time] [2021-11-19 13:35:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-19 13:35:36,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 32. [2021-11-19 13:35:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 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) [2021-11-19 13:35:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2021-11-19 13:35:36,794 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 12 [2021-11-19 13:35:36,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:36,794 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2021-11-19 13:35:36,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2021-11-19 13:35:36,795 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2021-11-19 13:35:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 13:35:36,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:36,796 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:36,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:37,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:37,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-19 13:35:37,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:37,409 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash -893074814, now seen corresponding path program 1 times [2021-11-19 13:35:37,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:37,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38506797] [2021-11-19 13:35:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:37,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:37,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:37,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:37,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:35:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:37,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:35:37,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:37,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:37,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-19 13:35:37,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:37,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-19 13:35:37,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:37,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:35:37,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:37,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:35:37,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-19 13:35:37,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-19 13:35:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:37,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:37,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:37,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:35:37,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:37,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 13:35:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:37,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:37,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38506797] [2021-11-19 13:35:37,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38506797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:37,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [394208027] [2021-11-19 13:35:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:37,998 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:37,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:35:38,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:35:38,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 13:35:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:38,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:35:38,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:38,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:38,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-19 13:35:38,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:38,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-19 13:35:38,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:38,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:35:38,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:38,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:35:38,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-19 13:35:38,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-19 13:35:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:38,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:38,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:38,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:35:38,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:38,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 13:35:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:38,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [394208027] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:38,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386185982] [2021-11-19 13:35:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:38,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:38,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:38,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:38,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 13:35:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:38,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:35:38,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:38,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:38,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-19 13:35:38,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:38,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-19 13:35:38,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:38,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:35:38,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:38,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:35:38,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-19 13:35:38,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-19 13:35:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:38,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:38,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:38,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:35:38,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:38,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 13:35:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:38,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386185982] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:38,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:35:38,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 7 [2021-11-19 13:35:38,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43781222] [2021-11-19 13:35:38,977 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:38,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:35:38,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:35:38,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:38,979 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-11-19 13:35:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:39,666 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2021-11-19 13:35:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:35:39,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 [2021-11-19 13:35:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:39,668 INFO L225 Difference]: With dead ends: 68 [2021-11-19 13:35:39,668 INFO L226 Difference]: Without dead ends: 59 [2021-11-19 13:35:39,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:35:39,670 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:39,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 77 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:35:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-19 13:35:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-11-19 13:35:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2021-11-19 13:35:39,681 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 15 [2021-11-19 13:35:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:39,681 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2021-11-19 13:35:39,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-11-19 13:35:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2021-11-19 13:35:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 13:35:39,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:39,683 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:39,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-19 13:35:39,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:40,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:40,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:40,285 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:40,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1000926759, now seen corresponding path program 2 times [2021-11-19 13:35:40,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:40,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408015243] [2021-11-19 13:35:40,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:35:40,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:40,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:40,292 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:40,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:35:40,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:35:40,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:35:40,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:35:40,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:40,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:40,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:35:40,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:40,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:35:40,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:40,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:35:40,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:40,758 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-11-19 13:35:40,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-11-19 13:35:40,810 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:35:40,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-19 13:35:40,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:40,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 13:35:40,996 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-11-19 13:35:40,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2021-11-19 13:35:41,080 INFO L354 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2021-11-19 13:35:41,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-11-19 13:35:41,466 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:41,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2021-11-19 13:35:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:41,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:41,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:41,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:35:41,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:41,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:35:43,701 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_39| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_23)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_39| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_39|) (_ bv4 32) v_DerPreprocessor_22) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) is different from false [2021-11-19 13:35:43,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:43,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-19 13:35:43,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:43,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-19 13:35:46,128 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_39| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_21| (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_39| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_22| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_16| (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (bvslt |v_ULTIMATE.start_main_~x~0#1_16| (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_21|))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_25)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_21| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_21|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_39|) v_DerPreprocessor_24) |v_ULTIMATE.start_main_~p~0#1.offset_39| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_22| (_ bv4 32)) v_DerPreprocessor_23))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_39| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_39|) (_ bv4 32) v_DerPreprocessor_22) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_16|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_16| (_ bv20 32)))) is different from false [2021-11-19 13:35:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-11-19 13:35:46,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:46,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408015243] [2021-11-19 13:35:46,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408015243] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:46,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2139032965] [2021-11-19 13:35:46,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:35:46,731 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:46,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:35:46,738 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:35:46,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 13:35:46,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:35:46,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049431254] [2021-11-19 13:35:46,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:35:46,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:46,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:46,872 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:46,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 1 [2021-11-19 13:35:46,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 13:35:46,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:35:46,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:35:46,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:35:46,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:46,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:47,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:35:47,197 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:35:47,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-19 13:35:47,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:47,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:35:47,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:47,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:35:47,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:35:47,261 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-19 13:35:47,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-19 13:35:47,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:47,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-19 13:35:47,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:47,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-19 13:35:47,567 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:35:47,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-19 13:35:47,604 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-19 13:35:47,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-11-19 13:35:47,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:35:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:47,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:47,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:47,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-19 13:35:47,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:47,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-19 13:35:49,849 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_42| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_43| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_31)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_43| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_43|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_42|) v_DerPreprocessor_30) |v_ULTIMATE.start_main_~p~0#1.offset_42| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_43|))))))))) is different from false [2021-11-19 13:35:49,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:49,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-19 13:35:49,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:49,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-19 13:35:52,168 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_42| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_20| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_28| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_43| (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_26| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_43| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_26| (_ bv1 1)) |v_ULTIMATE.start_main_~p~0#1.base_43|))))))))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_33)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_26| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_26|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_43|) v_DerPreprocessor_32) |v_ULTIMATE.start_main_~p~0#1.offset_43| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_28| (_ bv4 32)) v_DerPreprocessor_31))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_43| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_43|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_42|) v_DerPreprocessor_30) |v_ULTIMATE.start_main_~p~0#1.offset_42| |v_ULTIMATE.start_main_~x~0#1_20|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_26|)))))) is different from false [2021-11-19 13:35:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-11-19 13:35:52,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049431254] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:52,651 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:35:52,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 16 [2021-11-19 13:35:52,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56195631] [2021-11-19 13:35:52,651 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:52,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:35:52,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:35:52,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=99, Unknown=4, NotChecked=92, Total=240 [2021-11-19 13:35:52,653 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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) [2021-11-19 13:35:55,020 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_42| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_43| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_31)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_43| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_43|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_42|) v_DerPreprocessor_30) |v_ULTIMATE.start_main_~p~0#1.offset_42| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_43|))))))))) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_39| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_23)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_39| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_39|) (_ bv4 32) v_DerPreprocessor_22) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (exists ((v_arrayElimCell_35 (_ BitVec 1))) (let ((.cse2 (bvneg (bvneg v_arrayElimCell_35)))) (and (= (_ bv0 1) (bvadd (bvneg .cse2) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse2 (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|))))))) (bvsge (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) (_ bv10 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_main_~tail~0#1.base|))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~tail~0#1.base|))) is different from false [2021-11-19 13:35:57,088 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_42| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_43| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_31)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_43| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_43|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_42|) v_DerPreprocessor_30) |v_ULTIMATE.start_main_~p~0#1.offset_42| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_43|))))))))) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_39| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_23)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_39| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_39|) (_ bv4 32) v_DerPreprocessor_22) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (exists ((v_arrayElimCell_35 (_ BitVec 1))) (let ((.cse2 (bvneg (bvneg v_arrayElimCell_35)))) (and (= (_ bv0 1) (bvadd (bvneg .cse2) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse2 (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|))))))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_main_~tail~0#1.base|))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~tail~0#1.base|))) is different from false [2021-11-19 13:35:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:57,647 INFO L93 Difference]: Finished difference Result 75 states and 108 transitions. [2021-11-19 13:35:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:35:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 [2021-11-19 13:35:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:57,653 INFO L225 Difference]: With dead ends: 75 [2021-11-19 13:35:57,654 INFO L226 Difference]: Without dead ends: 66 [2021-11-19 13:35:57,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=119, Invalid=241, Unknown=6, NotChecked=234, Total=600 [2021-11-19 13:35:57,656 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:57,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 110 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 0 Unknown, 174 Unchecked, 0.6s Time] [2021-11-19 13:35:57,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-19 13:35:57,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2021-11-19 13:35:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 59 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 87 transitions. [2021-11-19 13:35:57,668 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 87 transitions. Word has length 15 [2021-11-19 13:35:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:57,668 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 87 transitions. [2021-11-19 13:35:57,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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) [2021-11-19 13:35:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 87 transitions. [2021-11-19 13:35:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 13:35:57,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:57,670 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:57,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:57,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:58,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:35:58,078 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:58,079 INFO L85 PathProgramCache]: Analyzing trace with hash 680874398, now seen corresponding path program 1 times [2021-11-19 13:35:58,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:58,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486719970] [2021-11-19 13:35:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:58,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:58,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:58,081 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:58,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:35:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:58,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:35:58,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:58,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:58,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:35:58,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:35:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:58,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:58,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:35:58,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486719970] [2021-11-19 13:35:58,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486719970] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:58,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [558980628] [2021-11-19 13:35:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:58,560 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:58,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:35:58,566 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:35:58,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 13:35:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:58,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:35:58,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:58,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:58,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:35:59,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:35:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:59,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:59,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [558980628] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:59,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783182150] [2021-11-19 13:35:59,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:59,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:59,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:59,478 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:59,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 13:35:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:59,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:35:59,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:59,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:35:59,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:35:59,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:35:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:59,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:59,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783182150] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:59,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:35:59,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 10, 7, 7] total 20 [2021-11-19 13:35:59,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707453653] [2021-11-19 13:35:59,751 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:59,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 13:35:59,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 13:35:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:35:59,752 INFO L87 Difference]: Start difference. First operand 60 states and 87 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2021-11-19 13:36:02,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:02,370 INFO L93 Difference]: Finished difference Result 135 states and 189 transitions. [2021-11-19 13:36:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 13:36:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 13:36:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:02,372 INFO L225 Difference]: With dead ends: 135 [2021-11-19 13:36:02,372 INFO L226 Difference]: Without dead ends: 118 [2021-11-19 13:36:02,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=262, Invalid=608, Unknown=0, NotChecked=0, Total=870 [2021-11-19 13:36:02,374 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 101 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:02,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 149 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 13:36:02,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-19 13:36:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 96. [2021-11-19 13:36:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4736842105263157) internal successors, (140), 95 states have internal predecessors, (140), 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) [2021-11-19 13:36:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 140 transitions. [2021-11-19 13:36:02,389 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 140 transitions. Word has length 17 [2021-11-19 13:36:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:02,390 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 140 transitions. [2021-11-19 13:36:02,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2021-11-19 13:36:02,390 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 140 transitions. [2021-11-19 13:36:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 13:36:02,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:02,392 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:02,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:02,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:02,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:02,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:36:02,994 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:36:02,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:02,994 INFO L85 PathProgramCache]: Analyzing trace with hash -128474150, now seen corresponding path program 1 times [2021-11-19 13:36:02,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:02,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322432894] [2021-11-19 13:36:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:02,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:02,996 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:02,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:36:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:03,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:36:03,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:03,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:36:03,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 13:36:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:36:03,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:36:03,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:03,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322432894] [2021-11-19 13:36:03,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322432894] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:03,256 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:36:03,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 13:36:03,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162898900] [2021-11-19 13:36:03,257 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:03,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:36:03,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:03,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:36:03,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:36:03,258 INFO L87 Difference]: Start difference. First operand 96 states and 140 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:36:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:03,731 INFO L93 Difference]: Finished difference Result 127 states and 182 transitions. [2021-11-19 13:36:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:36:03,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 13:36:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:03,733 INFO L225 Difference]: With dead ends: 127 [2021-11-19 13:36:03,733 INFO L226 Difference]: Without dead ends: 98 [2021-11-19 13:36:03,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:36:03,735 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:03,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 59 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:36:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-19 13:36:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-11-19 13:36:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4526315789473685) internal successors, (138), 95 states have internal predecessors, (138), 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) [2021-11-19 13:36:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2021-11-19 13:36:03,755 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 17 [2021-11-19 13:36:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:03,755 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2021-11-19 13:36:03,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:36:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2021-11-19 13:36:03,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 13:36:03,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:03,757 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:03,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:03,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:36:03,962 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:36:03,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:03,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1524987734, now seen corresponding path program 1 times [2021-11-19 13:36:03,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:03,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496537661] [2021-11-19 13:36:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:03,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:03,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:03,965 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:03,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:36:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:04,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:36:04,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:04,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:36:04,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:36:04,209 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:36:04,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-19 13:36:04,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:04,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:36:04,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:04,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:36:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:04,260 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-19 13:36:04,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-19 13:36:04,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:04,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 13:36:04,468 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-11-19 13:36:04,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2021-11-19 13:36:04,549 INFO L354 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2021-11-19 13:36:04,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-11-19 13:36:04,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-19 13:36:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:36:04,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:04,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:04,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:36:04,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:04,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:36:07,054 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_64| (_ BitVec 32)) (v_DerPreprocessor_37 (_ BitVec 32)) (v_DerPreprocessor_38 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_38)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_64| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_64|) (_ bv4 32) v_DerPreprocessor_37) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) is different from false [2021-11-19 13:36:07,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:07,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 13:36:07,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:07,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-19 13:36:09,598 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_63| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_38| (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_35| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_29| (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_64| (_ BitVec 32)) (v_DerPreprocessor_37 (_ BitVec 32)) (v_DerPreprocessor_38 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_40)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_35| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_35|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_63|) v_DerPreprocessor_39) |v_ULTIMATE.start_main_~p~0#1.offset_63| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_38| (_ bv4 32)) v_DerPreprocessor_38))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_64| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_64|) (_ bv4 32) v_DerPreprocessor_37) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_29|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_35|))))))) (bvslt |v_ULTIMATE.start_main_~x~0#1_29| (_ bv10 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_29| (_ bv20 32)))) is different from false [2021-11-19 13:36:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-11-19 13:36:10,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:10,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496537661] [2021-11-19 13:36:10,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496537661] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:10,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1654797948] [2021-11-19 13:36:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:10,180 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:10,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:36:10,181 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:36:10,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 13:36:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:10,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:36:10,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:10,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:36:10,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:36:10,512 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:36:10,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-19 13:36:10,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:10,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:36:10,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:10,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:36:10,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:10,565 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-19 13:36:10,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-19 13:36:10,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:10,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 13:36:10,748 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-11-19 13:36:10,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2021-11-19 13:36:10,836 INFO L354 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2021-11-19 13:36:10,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-11-19 13:36:11,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-19 13:36:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:36:11,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:11,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:11,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:36:11,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:11,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:36:13,196 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_69| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_45)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_69| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_69|) (_ bv4 32) v_DerPreprocessor_44) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) is different from false [2021-11-19 13:36:13,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:13,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-19 13:36:13,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:13,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-19 13:36:15,717 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_69| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_67| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_40| (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_44| (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_34| (_ BitVec 32))) (or (bvslt |v_ULTIMATE.start_main_~x~0#1_34| (_ bv10 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_34| (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_40|))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_47)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_40| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_40|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_67|) v_DerPreprocessor_46) |v_ULTIMATE.start_main_~p~0#1.offset_67| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_44| (_ bv4 32)) v_DerPreprocessor_45))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_69| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_69|) (_ bv4 32) v_DerPreprocessor_44) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_34|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)))) is different from false [2021-11-19 13:36:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-11-19 13:36:16,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1654797948] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:16,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582890578] [2021-11-19 13:36:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:16,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:36:16,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:36:16,218 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:36:16,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-19 13:36:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:16,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:36:16,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:16,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:36:16,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:36:16,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:16,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:36:16,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:16,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:36:16,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:16,534 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-11-19 13:36:16,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-11-19 13:36:16,589 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:36:16,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-19 13:36:16,803 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:16,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-19 13:36:16,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:16,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-19 13:36:16,947 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:36:16,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 73 [2021-11-19 13:36:16,992 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-19 13:36:16,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-11-19 13:36:17,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:36:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:36:17,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:17,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:17,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:36:17,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:17,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:36:19,233 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_53 (_ BitVec 32)) (v_DerPreprocessor_52 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_73| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_70| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_53)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_73| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_73|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_70|) v_DerPreprocessor_52) |v_ULTIMATE.start_main_~p~0#1.offset_70| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_73|)))))) is different from false [2021-11-19 13:36:19,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-19 13:36:19,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-19 13:36:21,610 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_53 (_ BitVec 32)) (v_DerPreprocessor_54 (_ BitVec 32)) (v_DerPreprocessor_52 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_45| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_73| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_39| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_50| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_70| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_71| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_45|))))) (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~p~0#1.base_73|))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_55)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_45| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_45|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_71|) v_DerPreprocessor_54) |v_ULTIMATE.start_main_~p~0#1.offset_71| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_50| (_ bv4 32)) v_DerPreprocessor_53))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_73| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_73|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_70|) v_DerPreprocessor_52) |v_ULTIMATE.start_main_~p~0#1.offset_70| |v_ULTIMATE.start_main_~x~0#1_39|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)))) is different from false [2021-11-19 13:36:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-11-19 13:36:21,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582890578] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:21,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:36:21,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 18 [2021-11-19 13:36:21,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738788243] [2021-11-19 13:36:21,958 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:36:21,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:36:21,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:36:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=101, Unknown=6, NotChecked=150, Total=306 [2021-11-19 13:36:21,960 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 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) [2021-11-19 13:36:24,369 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (_ bv0 32)))) (and (forall ((|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_64| (_ BitVec 32)) (v_DerPreprocessor_37 (_ BitVec 32)) (v_DerPreprocessor_38 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_38)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_64| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_64|) (_ bv4 32) v_DerPreprocessor_37) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) (not (bvslt .cse1 (_ bv10 32))) (forall ((v_DerPreprocessor_53 (_ BitVec 32)) (v_DerPreprocessor_52 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_73| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_70| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_53)))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_73| (store (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_73|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_70|) v_DerPreprocessor_52) |v_ULTIMATE.start_main_~p~0#1.offset_70| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_73|)))))) (= |c_ULTIMATE.start_main_~p~0#1.offset| (_ bv0 32)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_main_~tail~0#1.base|))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (exists ((v_arrayElimCell_65 (_ BitVec 1))) (let ((.cse3 (bvneg v_arrayElimCell_65))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg .cse3))) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse3 (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|)))))) (not (bvsgt .cse1 (_ bv20 32))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~tail~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_69| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsge (select (select (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_45)))) (store .cse4 |v_ULTIMATE.start_main_~p~0#1.base_69| (store (store (select .cse4 |v_ULTIMATE.start_main_~p~0#1.base_69|) (_ bv4 32) v_DerPreprocessor_44) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))))) is different from false [2021-11-19 13:36:26,439 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_64| (_ BitVec 32)) (v_DerPreprocessor_37 (_ BitVec 32)) (v_DerPreprocessor_38 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_38)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_64| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_64|) (_ bv4 32) v_DerPreprocessor_37) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) (forall ((v_DerPreprocessor_53 (_ BitVec 32)) (v_DerPreprocessor_52 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_73| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_70| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_53)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_73| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_73|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_70|) v_DerPreprocessor_52) |v_ULTIMATE.start_main_~p~0#1.offset_70| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_73|)))))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_main_~tail~0#1.base|))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (exists ((v_arrayElimCell_65 (_ BitVec 1))) (let ((.cse2 (bvneg v_arrayElimCell_65))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg .cse2))) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse2 (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|)))))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~tail~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_69| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsge (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_45)))) (store .cse3 |v_ULTIMATE.start_main_~p~0#1.base_69| (store (store (select .cse3 |v_ULTIMATE.start_main_~p~0#1.base_69|) (_ bv4 32) v_DerPreprocessor_44) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32))))) is different from false [2021-11-19 13:36:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:26,839 INFO L93 Difference]: Finished difference Result 136 states and 196 transitions. [2021-11-19 13:36:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:36:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 13:36:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:26,842 INFO L225 Difference]: With dead ends: 136 [2021-11-19 13:36:26,842 INFO L226 Difference]: Without dead ends: 112 [2021-11-19 13:36:26,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=94, Invalid=170, Unknown=8, NotChecked=280, Total=552 [2021-11-19 13:36:26,843 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:26,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 96 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 79 Invalid, 0 Unknown, 178 Unchecked, 0.6s Time] [2021-11-19 13:36:26,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-19 13:36:26,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2021-11-19 13:36:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 93 states have internal predecessors, (134), 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) [2021-11-19 13:36:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 134 transitions. [2021-11-19 13:36:26,876 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 134 transitions. Word has length 17 [2021-11-19 13:36:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:26,876 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 134 transitions. [2021-11-19 13:36:26,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 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) [2021-11-19 13:36:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 134 transitions. [2021-11-19 13:36:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 13:36:26,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:26,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:26,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:27,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:27,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:27,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:36:27,478 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:36:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash -668283619, now seen corresponding path program 1 times [2021-11-19 13:36:27,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:27,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965323142] [2021-11-19 13:36:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:27,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:27,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:27,481 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:27,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 13:36:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:27,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:36:27,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:27,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:36:27,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:36:27,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:27,722 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-19 13:36:27,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 93 [2021-11-19 13:36:27,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 116 [2021-11-19 13:36:27,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:27,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:36:27,763 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-19 13:36:27,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 89 [2021-11-19 13:36:27,780 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-19 13:36:27,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 89 [2021-11-19 13:36:28,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:28,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:36:28,150 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:36:28,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 121 treesize of output 91 [2021-11-19 13:36:28,177 INFO L354 Elim1Store]: treesize reduction 51, result has 20.3 percent of original size [2021-11-19 13:36:28,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 106 treesize of output 91 [2021-11-19 13:36:28,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:28,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:36:28,185 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-19 13:36:28,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 89 treesize of output 80 [2021-11-19 13:36:28,226 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:36:28,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 51 [2021-11-19 13:36:28,232 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:36:28,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2021-11-19 13:36:28,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-19 13:36:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:28,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:28,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:28,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-19 13:36:28,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:28,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:36:28,685 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:28,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 348 treesize of output 347 [2021-11-19 13:36:28,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:28,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 525 [2021-11-19 13:36:28,920 INFO L354 Elim1Store]: treesize reduction 51, result has 48.5 percent of original size [2021-11-19 13:36:28,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 525 treesize of output 355 [2021-11-19 13:36:29,025 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:29,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 347 treesize of output 353 [2021-11-19 13:36:29,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:29,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 531 [2021-11-19 13:36:29,158 INFO L354 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2021-11-19 13:36:29,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 531 treesize of output 352 [2021-11-19 13:36:29,244 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:29,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 344 treesize of output 350 [2021-11-19 13:36:29,268 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 13:36:29,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:36:29,859 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-19 13:36:29,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 9 [2021-11-19 13:36:30,166 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:30,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-11-19 13:36:30,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:36:35,172 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:35,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 102 [2021-11-19 13:36:36,318 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:36,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 137 [2021-11-19 13:36:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:39,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:39,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965323142] [2021-11-19 13:36:39,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965323142] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:39,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [232932748] [2021-11-19 13:36:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:39,485 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:39,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:36:39,485 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:36:39,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 13:36:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:39,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:36:39,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:39,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:36:39,790 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-19 13:36:39,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 94 [2021-11-19 13:36:39,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 117 [2021-11-19 13:36:39,852 INFO L354 Elim1Store]: treesize reduction 150, result has 14.3 percent of original size [2021-11-19 13:36:39,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 90 [2021-11-19 13:36:39,866 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-19 13:36:39,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 105 [2021-11-19 13:36:40,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:40,335 INFO L354 Elim1Store]: treesize reduction 75, result has 16.7 percent of original size [2021-11-19 13:36:40,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 140 treesize of output 110 [2021-11-19 13:36:40,361 INFO L354 Elim1Store]: treesize reduction 87, result has 17.9 percent of original size [2021-11-19 13:36:40,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 104 [2021-11-19 13:36:40,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:40,384 INFO L354 Elim1Store]: treesize reduction 67, result has 16.3 percent of original size [2021-11-19 13:36:40,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 108 treesize of output 84 [2021-11-19 13:36:40,426 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-19 13:36:40,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 58 [2021-11-19 13:36:40,432 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 13:36:40,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2021-11-19 13:36:40,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-19 13:36:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:40,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:40,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:40,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-19 13:36:40,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:40,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:36:40,822 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:40,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 658 treesize of output 627 [2021-11-19 13:36:40,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:40,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1081 [2021-11-19 13:36:42,780 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-11-19 13:36:42,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1081 treesize of output 635 [2021-11-19 13:36:42,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:42,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1081 [2021-11-19 13:36:46,995 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-11-19 13:36:46,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1081 treesize of output 635 [2021-11-19 13:36:47,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:47,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 627 treesize of output 617 [2021-11-19 13:36:47,108 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:47,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 617 treesize of output 607 [2021-11-19 13:36:47,142 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 13:36:47,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:36:47,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:36:47,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:47,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2021-11-19 13:36:47,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:36:49,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:36:49,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:36:49,501 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:49,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2021-11-19 13:36:51,176 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 13:36:51,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:36:51,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:36:52,052 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:52,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 539 treesize of output 527 [2021-11-19 13:36:52,106 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:52,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 657 treesize of output 645 [2021-11-19 13:36:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:54,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [232932748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:54,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027480636] [2021-11-19 13:36:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:54,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:36:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:36:54,878 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:36:54,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-19 13:36:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:54,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:36:54,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:54,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:36:55,229 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-19 13:36:55,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 97 [2021-11-19 13:36:55,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2021-11-19 13:36:55,309 INFO L354 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2021-11-19 13:36:55,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 87 [2021-11-19 13:36:55,330 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-19 13:36:55,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 108 [2021-11-19 13:36:55,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:55,689 INFO L354 Elim1Store]: treesize reduction 75, result has 16.7 percent of original size [2021-11-19 13:36:55,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 140 treesize of output 110 [2021-11-19 13:36:55,718 INFO L354 Elim1Store]: treesize reduction 87, result has 17.9 percent of original size [2021-11-19 13:36:55,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 104 [2021-11-19 13:36:55,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:36:55,744 INFO L354 Elim1Store]: treesize reduction 67, result has 16.3 percent of original size [2021-11-19 13:36:55,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 108 treesize of output 84 [2021-11-19 13:36:55,793 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-19 13:36:55,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 58 [2021-11-19 13:36:55,800 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 13:36:55,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2021-11-19 13:36:55,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-19 13:36:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:55,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:55,884 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:55,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-19 13:36:55,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:55,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:36:56,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:56,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 659 treesize of output 628 [2021-11-19 13:36:56,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:56,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1082 [2021-11-19 13:36:58,117 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-11-19 13:36:58,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1082 treesize of output 636 [2021-11-19 13:36:58,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:58,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1082 [2021-11-19 13:36:59,955 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-11-19 13:36:59,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1082 treesize of output 636 [2021-11-19 13:37:00,023 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:37:00,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 628 treesize of output 618 [2021-11-19 13:37:00,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:37:00,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 618 treesize of output 608 [2021-11-19 13:37:00,114 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 13:37:00,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:37:00,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:37:00,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:37:00,855 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:37:00,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 46 [2021-11-19 13:37:01,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:37:01,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 13:37:01,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:37:01,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 9 [2021-11-19 13:39:29,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:29,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 214 treesize of output 222 [2021-11-19 13:39:35,016 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:35,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 214 [2021-11-19 13:39:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:37,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027480636] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:39:37,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:39:37,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 8, 7, 8] total 16 [2021-11-19 13:39:37,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583598537] [2021-11-19 13:39:37,814 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:39:37,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:39:37,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:37,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:39:37,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=196, Unknown=1, NotChecked=0, Total=240 [2021-11-19 13:39:37,816 INFO L87 Difference]: Start difference. First operand 94 states and 134 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 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) [2021-11-19 13:39:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:38,905 INFO L93 Difference]: Finished difference Result 156 states and 222 transitions. [2021-11-19 13:39:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:39:38,906 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 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 18 [2021-11-19 13:39:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:38,907 INFO L225 Difference]: With dead ends: 156 [2021-11-19 13:39:38,907 INFO L226 Difference]: Without dead ends: 132 [2021-11-19 13:39:38,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=66, Invalid=275, Unknown=1, NotChecked=0, Total=342 [2021-11-19 13:39:38,909 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 60 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:38,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 140 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 123 Invalid, 0 Unknown, 75 Unchecked, 0.8s Time] [2021-11-19 13:39:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-19 13:39:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 94. [2021-11-19 13:39:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 93 states have internal predecessors, (134), 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) [2021-11-19 13:39:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 134 transitions. [2021-11-19 13:39:38,922 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 134 transitions. Word has length 18 [2021-11-19 13:39:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:38,922 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 134 transitions. [2021-11-19 13:39:38,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 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) [2021-11-19 13:39:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 134 transitions. [2021-11-19 13:39:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 13:39:38,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:38,924 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:38,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:39,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:39,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-19 13:39:39,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:39,538 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:39,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash -611025317, now seen corresponding path program 1 times [2021-11-19 13:39:39,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:39,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389590034] [2021-11-19 13:39:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:39,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:39,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:39,540 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:39,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 13:39:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:39,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:39:39,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:39,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:39:39,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:39:39,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:39,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-19 13:39:39,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:39,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-19 13:39:39,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:39:39,861 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-11-19 13:39:39,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 52 [2021-11-19 13:39:39,873 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:39:39,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-11-19 13:39:39,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 13:39:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:40,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:40,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:40,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:39:40,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:40,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:39:42,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_71 (_ BitVec 32)) (v_DerPreprocessor_70 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_93| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_90| (_ BitVec 32))) (or (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_71)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_93| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_93|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_90|) v_DerPreprocessor_70) |v_ULTIMATE.start_main_~p~0#1.offset_90| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_93|)))))) is different from false [2021-11-19 13:39:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 13:39:42,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:42,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389590034] [2021-11-19 13:39:42,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389590034] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:39:42,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [342836468] [2021-11-19 13:39:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:42,226 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:39:42,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:39:42,227 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:39:42,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-19 13:39:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:42,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:39:42,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:42,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:39:42,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:39:42,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:42,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-19 13:39:42,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:42,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-19 13:39:42,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:39:42,590 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-11-19 13:39:42,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 53 [2021-11-19 13:39:42,607 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:39:42,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-19 13:39:42,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 13:39:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:42,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:42,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:42,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-19 13:39:42,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:42,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-19 13:39:45,049 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_94| (_ BitVec 32)) (v_DerPreprocessor_75 (_ BitVec 32)) (v_DerPreprocessor_74 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_97| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_75)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_97| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_97|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_94|) v_DerPreprocessor_74) |v_ULTIMATE.start_main_~p~0#1.offset_94| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (or (bvslt .cse0 (_ bv20 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_97|)))) (not (bvsle .cse0 (_ bv20 32)))))) is different from false [2021-11-19 13:39:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 13:39:45,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [342836468] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:39:45,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787016444] [2021-11-19 13:39:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:45,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:39:45,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:39:45,186 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:39:45,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-19 13:39:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:45,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:39:45,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:45,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:39:45,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:39:45,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:45,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-19 13:39:45,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:45,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-19 13:39:45,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:39:45,506 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-11-19 13:39:45,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 53 [2021-11-19 13:39:45,522 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:39:45,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-19 13:39:45,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 13:39:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:45,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:45,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:45,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-19 13:39:45,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:45,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-19 13:39:47,768 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_101| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_98| (_ BitVec 32)) (v_DerPreprocessor_79 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_79)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_101| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_101|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_98|) v_DerPreprocessor_78) |v_ULTIMATE.start_main_~p~0#1.offset_98| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (or (not (bvsle .cse0 (_ bv20 32))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_101|)))) (bvslt .cse0 (_ bv20 32))))) is different from false [2021-11-19 13:39:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 13:39:47,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787016444] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:39:47,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:39:47,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 8, 7, 8] total 16 [2021-11-19 13:39:47,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102189577] [2021-11-19 13:39:47,888 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:39:47,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:39:47,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:47,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:39:47,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=120, Unknown=3, NotChecked=72, Total=240 [2021-11-19 13:39:47,889 INFO L87 Difference]: Start difference. First operand 94 states and 134 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 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) [2021-11-19 13:39:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:49,134 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2021-11-19 13:39:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:39:49,135 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 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 18 [2021-11-19 13:39:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:49,136 INFO L225 Difference]: With dead ends: 165 [2021-11-19 13:39:49,136 INFO L226 Difference]: Without dead ends: 122 [2021-11-19 13:39:49,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 82 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=163, Invalid=352, Unknown=3, NotChecked=132, Total=650 [2021-11-19 13:39:49,138 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 73 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:49,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 119 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 138 Invalid, 0 Unknown, 144 Unchecked, 0.8s Time] [2021-11-19 13:39:49,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-19 13:39:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2021-11-19 13:39:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 105 states have internal predecessors, (148), 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) [2021-11-19 13:39:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 148 transitions. [2021-11-19 13:39:49,149 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 148 transitions. Word has length 18 [2021-11-19 13:39:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:49,150 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 148 transitions. [2021-11-19 13:39:49,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 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) [2021-11-19 13:39:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 148 transitions. [2021-11-19 13:39:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 13:39:49,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:49,151 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:49,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:49,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:49,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:49,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:39:49,768 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash -776135564, now seen corresponding path program 3 times [2021-11-19 13:39:49,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:49,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180525091] [2021-11-19 13:39:49,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:39:49,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:49,770 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:49,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 13:39:49,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-19 13:39:49,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:39:49,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 13:39:49,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:49,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:39:49,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:39:50,046 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:39:50,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-19 13:39:50,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:50,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:39:50,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:50,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:39:50,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:39:50,099 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-19 13:39:50,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-19 13:39:50,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:50,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-19 13:39:50,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:50,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-19 13:39:50,354 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:39:50,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 75 [2021-11-19 13:39:50,384 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-19 13:39:50,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-11-19 13:39:50,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:50,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-19 13:39:50,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:50,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-19 13:39:50,587 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-11-19 13:39:50,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-11-19 13:39:50,932 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:50,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2021-11-19 13:39:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:50,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:51,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:51,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:39:51,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:51,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:39:53,119 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_86 (_ BitVec 32)) (v_DerPreprocessor_87 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_105| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_87)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_105| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_105|) (_ bv4 32) v_DerPreprocessor_86) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) is different from false [2021-11-19 13:39:53,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:53,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-19 13:39:53,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:53,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-19 13:39:55,440 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_86 (_ BitVec 32)) (v_DerPreprocessor_87 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_105| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_88 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_75| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_69| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_55| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_102| (_ BitVec 32))) (or (bvslt |v_ULTIMATE.start_main_~x~0#1_55| (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_69|)))))) (bvsgt |v_ULTIMATE.start_main_~x~0#1_55| (_ bv20 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_89)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_69| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_69|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_102|) v_DerPreprocessor_88) |v_ULTIMATE.start_main_~p~0#1.offset_102| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_75| (_ bv4 32)) v_DerPreprocessor_87))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_105| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_105|) (_ bv4 32) v_DerPreprocessor_86) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_55|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)))) is different from false [2021-11-19 13:39:55,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:55,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-19 13:39:55,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:39:55,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-11-19 13:39:58,833 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tail~0#1.offset_77| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_75| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_103| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_55| (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_102| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_57| (_ BitVec 32)) (v_DerPreprocessor_91 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_70| (_ BitVec 32)) (v_DerPreprocessor_86 (_ BitVec 32)) (v_DerPreprocessor_87 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_105| (_ BitVec 32)) (v_DerPreprocessor_88 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_69| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_91)))) (store .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_70| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_70|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_103|) v_DerPreprocessor_90) |v_ULTIMATE.start_main_~p~0#1.offset_103| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_77| (_ bv4 32)) v_DerPreprocessor_89))))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_69| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_69|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_102|) v_DerPreprocessor_88) |v_ULTIMATE.start_main_~p~0#1.offset_102| |v_ULTIMATE.start_main_~x~0#1_57|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_75| (_ bv4 32)) v_DerPreprocessor_87))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_105| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_105|) (_ bv4 32) v_DerPreprocessor_86) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_55|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_70|)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_70| (_ bv1 1)) |v_ULTIMATE.start_main_~tail~0#1.base_69|)))))))) (bvslt |v_ULTIMATE.start_main_~x~0#1_55| (_ bv10 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_55| (_ bv20 32)))) is different from false [2021-11-19 13:40:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-19 13:40:00,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:00,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180525091] [2021-11-19 13:40:00,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180525091] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:00,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1662455208] [2021-11-19 13:40:00,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:40:00,844 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:40:00,845 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:40:00,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-19 13:40:01,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:40:01,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674527457] [2021-11-19 13:40:01,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:40:01,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:40:01,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:01,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 1 [2021-11-19 13:40:01,016 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:40:01,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-19 13:40:01,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-19 13:40:01,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:40:01,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 13:40:01,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:01,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:40:01,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:40:02,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:02,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:40:02,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:02,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:40:02,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:02,230 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-11-19 13:40:02,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-11-19 13:40:02,296 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:40:02,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-11-19 13:40:02,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:02,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-19 13:40:02,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:02,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-19 13:40:02,565 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:40:02,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 78 [2021-11-19 13:40:02,630 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-19 13:40:02,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 67 [2021-11-19 13:40:02,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:02,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-19 13:40:02,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:02,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-19 13:40:03,072 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:40:03,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 91 [2021-11-19 13:40:03,131 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-19 13:40:03,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 67 [2021-11-19 13:40:03,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:40:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:03,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:03,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:03,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:40:03,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:03,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:40:05,345 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_110| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_106| (_ BitVec 32)) (v_DerPreprocessor_98 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_99 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_99)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_110| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_110|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_106|) v_DerPreprocessor_98) |v_ULTIMATE.start_main_~p~0#1.offset_106| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_110|)))))) is different from false [2021-11-19 13:40:05,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:05,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-19 13:40:05,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:05,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-19 13:40:07,762 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_84| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_107| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_110| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_106| (_ BitVec 32)) (v_DerPreprocessor_98 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_61| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_76| (_ BitVec 32)) (v_DerPreprocessor_99 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_101)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_76| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_76|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_107|) v_DerPreprocessor_100) |v_ULTIMATE.start_main_~p~0#1.offset_107| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_84| (_ bv4 32)) v_DerPreprocessor_99))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_110| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_110|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_106|) v_DerPreprocessor_98) |v_ULTIMATE.start_main_~p~0#1.offset_106| |v_ULTIMATE.start_main_~x~0#1_61|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_76|))))) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_76| (_ bv1 1)) |v_ULTIMATE.start_main_~p~0#1.base_110|)))))) is different from false [2021-11-19 13:40:08,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:08,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-19 13:40:08,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:08,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 244 [2021-11-19 13:40:10,852 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (v_DerPreprocessor_102 (_ BitVec 32)) (v_DerPreprocessor_103 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_86| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_84| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_107| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_110| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_63| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_106| (_ BitVec 32)) (v_DerPreprocessor_98 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_108| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_61| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_76| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_77| (_ BitVec 32)) (v_DerPreprocessor_99 (_ BitVec 32))) (let ((.cse3 (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_77| (_ bv1 1)))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_103)))) (store .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_77| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_77|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_108|) v_DerPreprocessor_102) |v_ULTIMATE.start_main_~p~0#1.offset_108| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_86| (_ bv4 32)) v_DerPreprocessor_101))))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_76| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_76|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_107|) v_DerPreprocessor_100) |v_ULTIMATE.start_main_~p~0#1.offset_107| |v_ULTIMATE.start_main_~x~0#1_63|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_84| (_ bv4 32)) v_DerPreprocessor_99))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_110| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_110|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_106|) v_DerPreprocessor_98) |v_ULTIMATE.start_main_~p~0#1.offset_106| |v_ULTIMATE.start_main_~x~0#1_61|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_77|))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse3 |v_ULTIMATE.start_main_~tail~0#1.base_76|))))))) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse3 |v_ULTIMATE.start_main_~tail~0#1.base_76| (_ bv1 1)) |v_ULTIMATE.start_main_~p~0#1.base_110|)))))))) is different from false [2021-11-19 13:40:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-19 13:40:12,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674527457] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:12,357 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:40:12,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 19 [2021-11-19 13:40:12,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896814353] [2021-11-19 13:40:12,357 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 13:40:12,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 13:40:12,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 13:40:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=118, Unknown=6, NotChecked=162, Total=342 [2021-11-19 13:40:12,359 INFO L87 Difference]: Start difference. First operand 106 states and 148 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2021-11-19 13:40:21,358 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~tail~0#1.base_73| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_73|) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~tail~0#1.base_73| |c_ULTIMATE.start_main_~tail~0#1.base|)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_~tail~0#1.base_73|)))) (forall ((v_DerPreprocessor_86 (_ BitVec 32)) (v_DerPreprocessor_87 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_105| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_87)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_105| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_105|) (_ bv4 32) v_DerPreprocessor_86) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_110| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_106| (_ BitVec 32)) (v_DerPreprocessor_98 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_99 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_99)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_110| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_110|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_106|) v_DerPreprocessor_98) |v_ULTIMATE.start_main_~p~0#1.offset_106| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_110|)))))) (exists ((v_arrayElimCell_191 (_ BitVec 1))) (let ((.cse2 (bvneg (bvneg (bvneg v_arrayElimCell_191))))) (and (= (_ bv0 1) (bvadd .cse2 (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|)))) (= (_ bv0 1) (bvadd (bvneg .cse2) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_main_~tail~0#1.base|))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~tail~0#1.base|))) is different from false [2021-11-19 13:40:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:21,941 INFO L93 Difference]: Finished difference Result 181 states and 251 transitions. [2021-11-19 13:40:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 13:40:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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 [2021-11-19 13:40:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:21,943 INFO L225 Difference]: With dead ends: 181 [2021-11-19 13:40:21,943 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 13:40:21,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=138, Invalid=344, Unknown=8, NotChecked=322, Total=812 [2021-11-19 13:40:21,945 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 68 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:21,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 115 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 114 Invalid, 0 Unknown, 345 Unchecked, 0.9s Time] [2021-11-19 13:40:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 13:40:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 122. [2021-11-19 13:40:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.4297520661157024) internal successors, (173), 121 states have internal predecessors, (173), 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) [2021-11-19 13:40:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 173 transitions. [2021-11-19 13:40:21,957 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 173 transitions. Word has length 18 [2021-11-19 13:40:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:21,958 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 173 transitions. [2021-11-19 13:40:21,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2021-11-19 13:40:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 173 transitions. [2021-11-19 13:40:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:40:21,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:21,959 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:21,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:22,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:22,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:22,374 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:22,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1956847993, now seen corresponding path program 1 times [2021-11-19 13:40:22,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:22,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471330947] [2021-11-19 13:40:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:22,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:22,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:22,376 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:22,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 13:40:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:22,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:40:22,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:22,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-11-19 13:40:22,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2021-11-19 13:40:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:40:22,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:23,287 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-19 13:40:23,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 38 [2021-11-19 13:40:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:40:23,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:23,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471330947] [2021-11-19 13:40:23,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471330947] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:23,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1426726685] [2021-11-19 13:40:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:23,343 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:23,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:40:23,349 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:40:23,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-19 13:40:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:23,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:40:23,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:23,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-11-19 13:40:24,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2021-11-19 13:40:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:40:24,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:24,320 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-19 13:40:24,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 38 [2021-11-19 13:40:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:40:24,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1426726685] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:24,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397052878] [2021-11-19 13:40:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:24,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:40:24,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:24,377 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:40:24,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-19 13:40:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:24,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 13:40:24,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:24,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:40:24,712 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-19 13:40:24,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 39 [2021-11-19 13:40:24,727 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-19 13:40:24,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 48 [2021-11-19 13:40:25,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:25,126 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-19 13:40:25,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 51 treesize of output 33 [2021-11-19 13:40:25,161 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-19 13:40:25,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 18 [2021-11-19 13:40:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:25,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:25,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:25,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 13:40:27,291 INFO L354 Elim1Store]: treesize reduction 86, result has 32.8 percent of original size [2021-11-19 13:40:27,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 62 [2021-11-19 13:40:27,360 INFO L354 Elim1Store]: treesize reduction 23, result has 50.0 percent of original size [2021-11-19 13:40:27,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 66 [2021-11-19 13:40:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:27,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397052878] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:27,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:40:27,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11, 10, 6, 6] total 31 [2021-11-19 13:40:27,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175600269] [2021-11-19 13:40:27,673 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:40:27,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-19 13:40:27,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:27,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-19 13:40:27,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2021-11-19 13:40:27,675 INFO L87 Difference]: Start difference. First operand 122 states and 173 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 31 states have internal predecessors, (75), 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) [2021-11-19 13:40:34,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:34,878 INFO L93 Difference]: Finished difference Result 445 states and 626 transitions. [2021-11-19 13:40:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-19 13:40:34,879 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 31 states have internal predecessors, (75), 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 [2021-11-19 13:40:34,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:34,881 INFO L225 Difference]: With dead ends: 445 [2021-11-19 13:40:34,881 INFO L226 Difference]: Without dead ends: 399 [2021-11-19 13:40:34,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1918 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1184, Invalid=5296, Unknown=0, NotChecked=0, Total=6480 [2021-11-19 13:40:34,885 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 217 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:34,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 265 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 502 Invalid, 0 Unknown, 121 Unchecked, 2.4s Time] [2021-11-19 13:40:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-19 13:40:34,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 254. [2021-11-19 13:40:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.466403162055336) internal successors, (371), 253 states have internal predecessors, (371), 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) [2021-11-19 13:40:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 371 transitions. [2021-11-19 13:40:34,905 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 371 transitions. Word has length 20 [2021-11-19 13:40:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:34,906 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 371 transitions. [2021-11-19 13:40:34,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 31 states have internal predecessors, (75), 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) [2021-11-19 13:40:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 371 transitions. [2021-11-19 13:40:34,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:40:34,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:34,908 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:34,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:35,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:35,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:35,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:35,510 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:35,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:35,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1390343952, now seen corresponding path program 1 times [2021-11-19 13:40:35,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:35,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553776832] [2021-11-19 13:40:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:35,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:35,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:35,513 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:35,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 13:40:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:35,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:40:35,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:40:35,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:40:35,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:35,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553776832] [2021-11-19 13:40:35,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553776832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:35,802 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:35,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:40:35,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869859705] [2021-11-19 13:40:35,802 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:35,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:40:35,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:35,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:40:35,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:40:35,805 INFO L87 Difference]: Start difference. First operand 254 states and 371 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-19 13:40:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:35,987 INFO L93 Difference]: Finished difference Result 453 states and 661 transitions. [2021-11-19 13:40:35,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:40:35,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 [2021-11-19 13:40:35,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:35,997 INFO L225 Difference]: With dead ends: 453 [2021-11-19 13:40:35,997 INFO L226 Difference]: Without dead ends: 228 [2021-11-19 13:40:35,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:40:35,999 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:36,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 27 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:40:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-19 13:40:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 182. [2021-11-19 13:40:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.3977900552486189) internal successors, (253), 181 states have internal predecessors, (253), 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) [2021-11-19 13:40:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 253 transitions. [2021-11-19 13:40:36,030 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 253 transitions. Word has length 20 [2021-11-19 13:40:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:36,030 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 253 transitions. [2021-11-19 13:40:36,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-19 13:40:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 253 transitions. [2021-11-19 13:40:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:40:36,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:36,032 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:36,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:36,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:36,238 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:36,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1494005967, now seen corresponding path program 2 times [2021-11-19 13:40:36,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:36,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173536593] [2021-11-19 13:40:36,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:40:36,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:36,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:36,240 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:36,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-19 13:40:36,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:40:36,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:40:36,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 13:40:36,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:36,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:40:36,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:40:36,530 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:40:36,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-19 13:40:36,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:36,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:40:36,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:36,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:40:36,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:36,582 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-19 13:40:36,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-19 13:40:36,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:36,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-19 13:40:36,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:36,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-19 13:40:36,848 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:40:36,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-19 13:40:36,884 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-19 13:40:36,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-11-19 13:40:36,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:36,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-19 13:40:37,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:37,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-19 13:40:37,146 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-11-19 13:40:37,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-11-19 13:40:37,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-19 13:40:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:40:37,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:37,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:37,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:40:37,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:37,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:40:39,636 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_111 (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_134| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_112)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_134| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_134|) (_ bv4 32) v_DerPreprocessor_111) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)))) is different from false [2021-11-19 13:40:39,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:39,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-19 13:40:39,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:39,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-19 13:40:42,075 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tail~0#1.base_90| (_ BitVec 32)) (v_DerPreprocessor_111 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_74| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_100| (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_134| (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_DerPreprocessor_114 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_131| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_114)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_90| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_90|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_131|) v_DerPreprocessor_113) |v_ULTIMATE.start_main_~p~0#1.offset_131| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_100| (_ bv4 32)) v_DerPreprocessor_112))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_134| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_134|) (_ bv4 32) v_DerPreprocessor_111) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_74|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_74| (_ bv20 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_90|)))) (bvslt |v_ULTIMATE.start_main_~x~0#1_74| (_ bv10 32)))) is different from false [2021-11-19 13:40:42,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:42,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-19 13:40:42,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:42,617 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-11-19 13:40:45,385 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_111 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_100| (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_102| (_ BitVec 32)) (v_DerPreprocessor_114 (_ BitVec 32)) (v_DerPreprocessor_115 (_ BitVec 32)) (v_DerPreprocessor_116 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_132| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_131| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_90| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_74| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_134| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_76| (_ BitVec 32))) (or (bvsgt |v_ULTIMATE.start_main_~x~0#1_74| (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_91| (_ bv1 1)) |v_ULTIMATE.start_main_~tail~0#1.base_90|))))))) (bvslt |v_ULTIMATE.start_main_~x~0#1_74| (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_116)))) (store .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_91| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_91|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_132|) v_DerPreprocessor_115) |v_ULTIMATE.start_main_~p~0#1.offset_132| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_102| (_ bv4 32)) v_DerPreprocessor_114))))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_90| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_90|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_131|) v_DerPreprocessor_113) |v_ULTIMATE.start_main_~p~0#1.offset_131| |v_ULTIMATE.start_main_~x~0#1_76|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_100| (_ bv4 32)) v_DerPreprocessor_112))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_134| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_134|) (_ bv4 32) v_DerPreprocessor_111) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_74|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_91|)))))) is different from false [2021-11-19 13:40:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-11-19 13:40:47,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:47,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173536593] [2021-11-19 13:40:47,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173536593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:47,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [769785563] [2021-11-19 13:40:47,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:40:47,170 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:47,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:40:47,170 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:40:47,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-19 13:40:47,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:40:47,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062436462] [2021-11-19 13:40:47,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:40:47,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:40:47,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:47,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 1 [2021-11-19 13:40:47,267 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:40:47,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-19 13:40:47,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:40:47,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:40:47,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 13:40:47,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:47,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:40:47,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:40:47,468 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:40:47,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-11-19 13:40:47,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:40:47,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:40:47,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:40:47,518 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-19 13:40:47,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-19 13:40:47,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-19 13:40:47,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-19 13:40:47,730 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:40:47,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 80 [2021-11-19 13:40:47,780 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-19 13:40:47,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 69 [2021-11-19 13:40:48,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:48,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-19 13:40:48,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:48,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-19 13:40:48,485 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:40:48,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 101 [2021-11-19 13:40:48,529 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-19 13:40:48,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 77 [2021-11-19 13:40:48,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:40:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:40:48,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:48,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:48,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-19 13:40:48,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:48,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-19 13:40:50,730 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_123 (_ BitVec 32)) (v_DerPreprocessor_124 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_139| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_135| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_124)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_139| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_139|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_135|) v_DerPreprocessor_123) |v_ULTIMATE.start_main_~p~0#1.offset_135| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_139|))))))) is different from false [2021-11-19 13:40:50,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:50,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-19 13:40:50,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:50,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-11-19 13:40:53,109 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_123 (_ BitVec 32)) (v_DerPreprocessor_124 (_ BitVec 32)) (v_DerPreprocessor_125 (_ BitVec 32)) (v_DerPreprocessor_126 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_139| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_136| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_135| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_81| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_97| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_109| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_97| (_ bv1 1)) |v_ULTIMATE.start_main_~p~0#1.base_139|)))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_126)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_97| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_97|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_136|) v_DerPreprocessor_125) |v_ULTIMATE.start_main_~p~0#1.offset_136| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_109| (_ bv4 32)) v_DerPreprocessor_124))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_139| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_139|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_135|) v_DerPreprocessor_123) |v_ULTIMATE.start_main_~p~0#1.offset_135| |v_ULTIMATE.start_main_~x~0#1_81|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_97|))))))) is different from false [2021-11-19 13:40:53,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:53,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-19 13:40:53,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:53,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 244 [2021-11-19 13:40:56,239 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tail~0#1.offset_111| (_ BitVec 32)) (v_DerPreprocessor_123 (_ BitVec 32)) (v_DerPreprocessor_124 (_ BitVec 32)) (v_DerPreprocessor_125 (_ BitVec 32)) (v_DerPreprocessor_126 (_ BitVec 32)) (v_DerPreprocessor_127 (_ BitVec 32)) (v_DerPreprocessor_128 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_139| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_136| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_135| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_137| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_81| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_97| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_98| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_109| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_98| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_98|)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~tail~0#1.base_97| (_ bv1 1)) |v_ULTIMATE.start_main_~p~0#1.base_139|)))))))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~tail~0#1.base_97|))))) (bvsge (select (select (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_128)))) (store .cse3 |v_ULTIMATE.start_main_~tail~0#1.base_98| (store (store (store (select .cse3 |v_ULTIMATE.start_main_~tail~0#1.base_98|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_137|) v_DerPreprocessor_127) |v_ULTIMATE.start_main_~p~0#1.offset_137| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_111| (_ bv4 32)) v_DerPreprocessor_126))))) (store .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_97| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_97|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_136|) v_DerPreprocessor_125) |v_ULTIMATE.start_main_~p~0#1.offset_136| |v_ULTIMATE.start_main_~x~0#1_83|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_109| (_ bv4 32)) v_DerPreprocessor_124))))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_139| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_139|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_135|) v_DerPreprocessor_123) |v_ULTIMATE.start_main_~p~0#1.offset_135| |v_ULTIMATE.start_main_~x~0#1_81|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32))))) is different from false [2021-11-19 13:40:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-11-19 13:40:57,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062436462] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:57,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:40:57,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 19 [2021-11-19 13:40:57,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541676796] [2021-11-19 13:40:57,872 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 13:40:57,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 13:40:57,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:57,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 13:40:57,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=118, Unknown=6, NotChecked=162, Total=342 [2021-11-19 13:40:57,873 INFO L87 Difference]: Start difference. First operand 182 states and 253 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2021-11-19 13:41:04,792 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_123 (_ BitVec 32)) (v_DerPreprocessor_124 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_139| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_135| (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_124)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_139| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_139|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_135|) v_DerPreprocessor_123) |v_ULTIMATE.start_main_~p~0#1.offset_135| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_139|))))))) (exists ((v_arrayElimCell_231 (_ BitVec 1)) (v_arrayElimCell_245 (_ BitVec 1))) (let ((.cse1 (bvneg (bvneg v_arrayElimCell_231))) (.cse2 (bvneg v_arrayElimCell_245))) (and (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg .cse1))) (= (_ bv0 1) (bvadd .cse2 (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|))) (= (_ bv0 1) (bvadd .cse1 .cse2))))) (forall ((v_DerPreprocessor_111 (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_134| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)) (bvsge (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_112)))) (store .cse3 |v_ULTIMATE.start_main_~p~0#1.base_134| (store (store (select .cse3 |v_ULTIMATE.start_main_~p~0#1.base_134|) (_ bv4 32) v_DerPreprocessor_111) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_main_~tail~0#1.base|))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~tail~0#1.base|)) (exists ((v_arrayElimCell_243 (_ BitVec 1)) (|v_ULTIMATE.start_main_~tail~0#1.base_94| (_ BitVec 32))) (let ((.cse4 (bvneg v_arrayElimCell_243))) (and (not (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_~tail~0#1.base_94|)) (= (_ bv0 1) (bvadd .cse4 (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_94|))) (not (= |v_ULTIMATE.start_main_~tail~0#1.base_94| |c_ULTIMATE.start_main_~tail~0#1.base|)) (= (_ bv0 1) (bvadd .cse4 (_ bv1 1))))))) is different from false [2021-11-19 13:41:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:05,252 INFO L93 Difference]: Finished difference Result 208 states and 287 transitions. [2021-11-19 13:41:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:41:05,253 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) Word has length 20 [2021-11-19 13:41:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:05,255 INFO L225 Difference]: With dead ends: 208 [2021-11-19 13:41:05,255 INFO L226 Difference]: Without dead ends: 206 [2021-11-19 13:41:05,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=135, Invalid=305, Unknown=8, NotChecked=308, Total=756 [2021-11-19 13:41:05,257 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:05,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 87 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 51 Invalid, 0 Unknown, 199 Unchecked, 0.6s Time] [2021-11-19 13:41:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-19 13:41:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 190. [2021-11-19 13:41:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.4074074074074074) internal successors, (266), 189 states have internal predecessors, (266), 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) [2021-11-19 13:41:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 266 transitions. [2021-11-19 13:41:05,275 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 266 transitions. Word has length 20 [2021-11-19 13:41:05,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:05,275 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 266 transitions. [2021-11-19 13:41:05,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2021-11-19 13:41:05,275 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 266 transitions. [2021-11-19 13:41:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:41:05,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:05,276 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:05,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:05,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:05,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:05,690 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:05,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1494004045, now seen corresponding path program 1 times [2021-11-19 13:41:05,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:05,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773323424] [2021-11-19 13:41:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:05,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:05,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:05,692 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:05,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-19 13:41:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:05,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 13:41:05,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:05,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:41:05,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:41:05,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:05,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:41:05,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:05,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:41:05,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:06,178 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-11-19 13:41:06,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-11-19 13:41:06,235 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:41:06,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-19 13:41:06,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:06,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-19 13:41:06,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:06,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-19 13:41:06,476 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:41:06,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 74 [2021-11-19 13:41:06,507 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-19 13:41:06,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 48 [2021-11-19 13:41:06,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:06,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-19 13:41:06,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:06,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-19 13:41:06,725 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-11-19 13:41:06,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-11-19 13:41:07,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:07,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2021-11-19 13:41:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:41:07,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:07,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:07,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:41:07,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:07,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:41:09,235 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_145| (_ BitVec 32)) (v_DerPreprocessor_135 (_ BitVec 32)) (v_DerPreprocessor_136 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsle (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_136)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_145| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_145|) (_ bv4 32) v_DerPreprocessor_135) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) is different from false [2021-11-19 13:41:09,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:09,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 13:41:09,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:09,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-19 13:41:11,817 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_145| (_ BitVec 32)) (v_DerPreprocessor_135 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_104| (_ BitVec 32)) (v_DerPreprocessor_136 (_ BitVec 32)) (v_DerPreprocessor_137 (_ BitVec 32)) (v_DerPreprocessor_138 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_141| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_88| (_ BitVec 32))) (or (bvslt |v_ULTIMATE.start_main_~x~0#1_88| (_ bv10 32)) (bvsle (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_138)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_104| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_104|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_141|) v_DerPreprocessor_137) |v_ULTIMATE.start_main_~p~0#1.offset_141| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_118| (_ bv4 32)) v_DerPreprocessor_136))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_145| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_145|) (_ bv4 32) v_DerPreprocessor_135) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_88|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_88| (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_104|))))))))) is different from false [2021-11-19 13:41:12,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:12,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-19 13:41:12,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:12,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 237 [2021-11-19 13:41:15,254 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tail~0#1.offset_120| (_ BitVec 32)) (v_DerPreprocessor_135 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_104| (_ BitVec 32)) (v_DerPreprocessor_136 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_105| (_ BitVec 32)) (v_DerPreprocessor_137 (_ BitVec 32)) (v_DerPreprocessor_138 (_ BitVec 32)) (v_DerPreprocessor_139 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_142| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_141| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_88| (_ BitVec 32)) (v_DerPreprocessor_140 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_145| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_90| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_105| (_ bv1 1)) |v_ULTIMATE.start_main_~tail~0#1.base_104|)))))))))) (bvslt |v_ULTIMATE.start_main_~x~0#1_88| (_ bv10 32)) (bvsle (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_140)))) (store .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_105| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_105|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_142|) v_DerPreprocessor_139) |v_ULTIMATE.start_main_~p~0#1.offset_142| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_120| (_ bv4 32)) v_DerPreprocessor_138))))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_104| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_104|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_141|) v_DerPreprocessor_137) |v_ULTIMATE.start_main_~p~0#1.offset_141| |v_ULTIMATE.start_main_~x~0#1_90|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_118| (_ bv4 32)) v_DerPreprocessor_136))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_145| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_145|) (_ bv4 32) v_DerPreprocessor_135) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_88|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_88| (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_105|))))))) is different from false [2021-11-19 13:41:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-11-19 13:41:17,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:17,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773323424] [2021-11-19 13:41:17,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773323424] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:17,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1797015200] [2021-11-19 13:41:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:17,349 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:41:17,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:41:17,350 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:41:17,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-19 13:41:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:17,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 13:41:17,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:17,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:41:17,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:41:17,669 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:41:17,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-19 13:41:17,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:17,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:41:17,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:17,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:41:17,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:17,726 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-19 13:41:17,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-19 13:41:17,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:17,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-19 13:41:17,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:17,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-19 13:41:17,986 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:41:17,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 75 [2021-11-19 13:41:18,022 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-19 13:41:18,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-11-19 13:41:18,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:18,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 13:41:18,219 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-11-19 13:41:18,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2021-11-19 13:41:18,324 INFO L354 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2021-11-19 13:41:18,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-11-19 13:41:18,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-19 13:41:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:41:18,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:18,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:18,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:41:18,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:18,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-19 13:41:20,769 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_146 (_ BitVec 32)) (v_DerPreprocessor_147 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_151| (_ BitVec 32))) (or (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsle (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_147)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_151| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_151|) (_ bv4 32) v_DerPreprocessor_146) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) is different from false [2021-11-19 13:41:21,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:21,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-19 13:41:21,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:21,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-19 13:41:23,405 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tail~0#1.base_111| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_95| (_ BitVec 32)) (v_DerPreprocessor_146 (_ BitVec 32)) (v_DerPreprocessor_147 (_ BitVec 32)) (v_DerPreprocessor_148 (_ BitVec 32)) (v_DerPreprocessor_149 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_127| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_146| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_151| (_ BitVec 32))) (or (bvslt |v_ULTIMATE.start_main_~x~0#1_95| (_ bv10 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_95| (_ bv20 32)) (bvsle (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_149)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_111| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_111|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_146|) v_DerPreprocessor_148) |v_ULTIMATE.start_main_~p~0#1.offset_146| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_127| (_ bv4 32)) v_DerPreprocessor_147))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_151| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_151|) (_ bv4 32) v_DerPreprocessor_146) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_95|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_111|)))))) is different from false [2021-11-19 13:41:24,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:24,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-19 13:41:24,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:24,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 230 [2021-11-19 13:41:27,309 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tail~0#1.base_111| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_112| (_ BitVec 32)) (v_DerPreprocessor_146 (_ BitVec 32)) (v_DerPreprocessor_147 (_ BitVec 32)) (v_DerPreprocessor_148 (_ BitVec 32)) (v_DerPreprocessor_149 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_127| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_147| (_ BitVec 32)) (v_DerPreprocessor_150 (_ BitVec 32)) (v_DerPreprocessor_151 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_146| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_95| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_97| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_129| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_151| (_ BitVec 32))) (or (bvslt |v_ULTIMATE.start_main_~x~0#1_95| (_ bv10 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_95| (_ bv20 32)) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_112| (_ bv1 1)) |v_ULTIMATE.start_main_~tail~0#1.base_111|)))) (bvsle (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_151)))) (store .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_112| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_112|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_147|) v_DerPreprocessor_150) |v_ULTIMATE.start_main_~p~0#1.offset_147| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_129| (_ bv4 32)) v_DerPreprocessor_149))))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_111| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_111|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_146|) v_DerPreprocessor_148) |v_ULTIMATE.start_main_~p~0#1.offset_146| |v_ULTIMATE.start_main_~x~0#1_97|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_127| (_ bv4 32)) v_DerPreprocessor_147))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_151| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_151|) (_ bv4 32) v_DerPreprocessor_146) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_95|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_112|)))))) is different from false [2021-11-19 13:41:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-11-19 13:41:29,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1797015200] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:29,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353474090] [2021-11-19 13:41:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:29,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:41:29,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:41:29,527 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:41:29,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-19 13:41:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:29,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 13:41:29,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:29,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:41:29,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 13:41:29,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:29,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 13:41:29,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:29,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 13:41:29,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:29,981 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-11-19 13:41:29,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-11-19 13:41:30,053 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:41:30,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-11-19 13:41:30,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:30,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-19 13:41:30,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:30,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-19 13:41:30,354 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:41:30,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 79 [2021-11-19 13:41:30,428 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-19 13:41:30,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 68 [2021-11-19 13:41:30,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:30,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-19 13:41:30,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:30,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-19 13:41:31,111 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-11-19 13:41:31,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 101 [2021-11-19 13:41:31,174 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-19 13:41:31,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 77 [2021-11-19 13:41:31,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-19 13:41:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:41:31,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:31,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:31,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:41:31,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:31,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-19 13:41:33,411 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_156| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_150| (_ BitVec 32)) (v_DerPreprocessor_158 (_ BitVec 32)) (v_DerPreprocessor_159 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_156|)))) (bvsle (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_159)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_156| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_156|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_150|) v_DerPreprocessor_158) |v_ULTIMATE.start_main_~p~0#1.offset_150| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)))) is different from false [2021-11-19 13:41:33,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:33,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-19 13:41:33,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:33,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-19 13:41:35,854 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_150| (_ BitVec 32)) (v_DerPreprocessor_158 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_136| (_ BitVec 32)) (v_DerPreprocessor_159 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_118| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_151| (_ BitVec 32)) (v_DerPreprocessor_160 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_161 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_156| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_102| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_118|))))) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_118| (_ bv1 1)) |v_ULTIMATE.start_main_~p~0#1.base_156|)))) (bvsle (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_161)))) (store .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_118| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~tail~0#1.base_118|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_151|) v_DerPreprocessor_160) |v_ULTIMATE.start_main_~p~0#1.offset_151| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_136| (_ bv4 32)) v_DerPreprocessor_159))))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_156| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_156|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_150|) v_DerPreprocessor_158) |v_ULTIMATE.start_main_~p~0#1.offset_150| |v_ULTIMATE.start_main_~x~0#1_102|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)))) is different from false [2021-11-19 13:41:36,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:36,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-19 13:41:36,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:41:36,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 241 [2021-11-19 13:41:39,387 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_150| (_ BitVec 32)) (v_DerPreprocessor_158 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_136| (_ BitVec 32)) (v_DerPreprocessor_159 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_138| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_152| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_151| (_ BitVec 32)) (v_DerPreprocessor_160 (_ BitVec 32)) (v_DerPreprocessor_161 (_ BitVec 32)) (v_DerPreprocessor_162 (_ BitVec 32)) (v_DerPreprocessor_163 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_156| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_119| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_102| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_104| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_119| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~tail~0#1.base_118|))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_119|))))) (not (= (_ bv0 1) (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~tail~0#1.base_118| (_ bv1 1)) |v_ULTIMATE.start_main_~p~0#1.base_156|)))) (bvsle (select (select (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_163)))) (store .cse3 |v_ULTIMATE.start_main_~tail~0#1.base_119| (store (store (store (select .cse3 |v_ULTIMATE.start_main_~tail~0#1.base_119|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_152|) v_DerPreprocessor_162) |v_ULTIMATE.start_main_~p~0#1.offset_152| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_138| (_ bv4 32)) v_DerPreprocessor_161))))) (store .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_118| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_118|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_151|) v_DerPreprocessor_160) |v_ULTIMATE.start_main_~p~0#1.offset_151| |v_ULTIMATE.start_main_~x~0#1_104|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_136| (_ bv4 32)) v_DerPreprocessor_159))))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_156| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_156|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_150|) v_DerPreprocessor_158) |v_ULTIMATE.start_main_~p~0#1.offset_150| |v_ULTIMATE.start_main_~x~0#1_102|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32))))) is different from false [2021-11-19 13:41:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-11-19 13:41:41,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353474090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:41,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:41:41,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 23 [2021-11-19 13:41:41,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269381036] [2021-11-19 13:41:41,655 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:41:41,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 13:41:41,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 13:41:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=141, Unknown=9, NotChecked=288, Total=506 [2021-11-19 13:41:41,657 INFO L87 Difference]: Start difference. First operand 190 states and 266 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) [2021-11-19 13:41:46,446 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (_ bv0 32)))) (and (not (bvslt .cse0 (_ bv10 32))) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_145| (_ BitVec 32)) (v_DerPreprocessor_135 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_104| (_ BitVec 32)) (v_DerPreprocessor_136 (_ BitVec 32)) (v_DerPreprocessor_137 (_ BitVec 32)) (v_DerPreprocessor_138 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_141| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_88| (_ BitVec 32))) (or (bvslt |v_ULTIMATE.start_main_~x~0#1_88| (_ bv10 32)) (bvsle (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_138)))) (store .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_104| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~tail~0#1.base_104|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_141|) v_DerPreprocessor_137) |v_ULTIMATE.start_main_~p~0#1.offset_141| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_118| (_ bv4 32)) v_DerPreprocessor_136))))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_145| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_145|) (_ bv4 32) v_DerPreprocessor_135) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_88|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_88| (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_104|))))))))) (= |c_ULTIMATE.start_main_~p~0#1.offset| (_ bv0 32)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (exists ((v_arrayElimCell_254 (_ BitVec 1))) (let ((.cse3 (bvneg (bvneg (bvneg v_arrayElimCell_254))))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|))) .cse3)) (= (_ bv0 1) (bvadd .cse3 (_ bv1 1)))))) (exists ((|v_ULTIMATE.start_main_~p~0#1.base_143| (_ BitVec 32))) (let ((.cse4 (select (select |c_#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_143|) (_ bv0 32)))) (and (not (bvsgt .cse4 (_ bv20 32))) (not (bvslt .cse4 (_ bv10 32))) (or (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) (_ bv10 32)) (= |c_ULTIMATE.start_main_~p~0#1.base| |v_ULTIMATE.start_main_~p~0#1.base_143|))))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_main_~tail~0#1.base|))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_150| (_ BitVec 32)) (v_DerPreprocessor_158 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_136| (_ BitVec 32)) (v_DerPreprocessor_159 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_118| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_151| (_ BitVec 32)) (v_DerPreprocessor_160 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_161 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_156| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_102| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_118|))))) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_118| (_ bv1 1)) |v_ULTIMATE.start_main_~p~0#1.base_156|)))) (bvsle (select (select (let ((.cse5 (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_161)))) (store .cse6 |v_ULTIMATE.start_main_~tail~0#1.base_118| (store (store (store (select .cse6 |v_ULTIMATE.start_main_~tail~0#1.base_118|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_151|) v_DerPreprocessor_160) |v_ULTIMATE.start_main_~p~0#1.offset_151| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_136| (_ bv4 32)) v_DerPreprocessor_159))))) (store .cse5 |v_ULTIMATE.start_main_~p~0#1.base_156| (store (store (select .cse5 |v_ULTIMATE.start_main_~p~0#1.base_156|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_150|) v_DerPreprocessor_158) |v_ULTIMATE.start_main_~p~0#1.offset_150| |v_ULTIMATE.start_main_~x~0#1_102|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)))) (not (bvsgt .cse0 (_ bv20 32))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~tail~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~tail~0#1.base_111| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_95| (_ BitVec 32)) (v_DerPreprocessor_146 (_ BitVec 32)) (v_DerPreprocessor_147 (_ BitVec 32)) (v_DerPreprocessor_148 (_ BitVec 32)) (v_DerPreprocessor_149 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.offset_127| (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_146| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_151| (_ BitVec 32))) (or (bvslt |v_ULTIMATE.start_main_~x~0#1_95| (_ bv10 32)) (bvsgt |v_ULTIMATE.start_main_~x~0#1_95| (_ bv20 32)) (bvsle (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_149)))) (store .cse8 |v_ULTIMATE.start_main_~tail~0#1.base_111| (store (store (store (select .cse8 |v_ULTIMATE.start_main_~tail~0#1.base_111|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_146|) v_DerPreprocessor_148) |v_ULTIMATE.start_main_~p~0#1.offset_146| |ULTIMATE.start_main_~x~0#1|) (bvadd |v_ULTIMATE.start_main_~tail~0#1.offset_127| (_ bv4 32)) v_DerPreprocessor_147))))) (store .cse7 |v_ULTIMATE.start_main_~p~0#1.base_151| (store (store (select .cse7 |v_ULTIMATE.start_main_~p~0#1.base_151|) (_ bv4 32) v_DerPreprocessor_146) (_ bv0 32) |v_ULTIMATE.start_main_~x~0#1_95|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_111|)))))))) is different from true [2021-11-19 13:41:55,924 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~tail~0#1.base_115| (_ BitVec 32))) (and (not (= |v_ULTIMATE.start_main_~tail~0#1.base_115| |c_ULTIMATE.start_main_~tail~0#1.base|)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_~tail~0#1.base_115|)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_115|)) (_ bv1 1))))) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_145| (_ BitVec 32)) (v_DerPreprocessor_135 (_ BitVec 32)) (v_DerPreprocessor_136 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsle (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_136)))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_145| (store (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_145|) (_ bv4 32) v_DerPreprocessor_135) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) (forall ((v_DerPreprocessor_146 (_ BitVec 32)) (v_DerPreprocessor_147 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_151| (_ BitVec 32))) (or (bvslt |ULTIMATE.start_main_~x~0#1| (_ bv10 32)) (bvsle (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_147)))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_151| (store (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_151|) (_ bv4 32) v_DerPreprocessor_146) (_ bv0 32) |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (bvsgt |ULTIMATE.start_main_~x~0#1| (_ bv20 32)))) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_156| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_150| (_ BitVec 32)) (v_DerPreprocessor_158 (_ BitVec 32)) (v_DerPreprocessor_159 (_ BitVec 32)) (|ULTIMATE.start_main_~tail~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_156|)))) (bvsle (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd |ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32)) v_DerPreprocessor_159)))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_156| (store (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_156|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_150|) v_DerPreprocessor_158) |v_ULTIMATE.start_main_~p~0#1.offset_150| |ULTIMATE.start_main_~x~0#1|))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_main_~tail~0#1.base|))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~tail~0#1.base|)) (exists ((v_arrayElimCell_254 (_ BitVec 1)) (v_arrayElimCell_279 (_ BitVec 1))) (let ((.cse3 (bvneg v_arrayElimCell_279)) (.cse4 (bvneg (bvneg (bvneg v_arrayElimCell_254))))) (and (= (_ bv0 1) (bvadd .cse3 (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|))) (= (_ bv0 1) (bvadd (bvneg .cse4) (bvneg (bvneg .cse3)))) (= (_ bv0 1) (bvadd .cse4 (_ bv1 1))))))) is different from false [2021-11-19 13:41:56,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:56,917 INFO L93 Difference]: Finished difference Result 274 states and 388 transitions. [2021-11-19 13:41:56,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 13:41:56,918 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 20 [2021-11-19 13:41:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:56,920 INFO L225 Difference]: With dead ends: 274 [2021-11-19 13:41:56,921 INFO L226 Difference]: Without dead ends: 223 [2021-11-19 13:41:56,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 89 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 11 IntricatePredicates, 2 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=127, Invalid=285, Unknown=12, NotChecked=506, Total=930 [2021-11-19 13:41:56,922 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:56,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 135 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 56 Invalid, 0 Unknown, 286 Unchecked, 0.7s Time] [2021-11-19 13:41:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-19 13:41:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 187. [2021-11-19 13:41:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.4086021505376345) internal successors, (262), 186 states have internal predecessors, (262), 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) [2021-11-19 13:41:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 262 transitions. [2021-11-19 13:41:56,946 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 262 transitions. Word has length 20 [2021-11-19 13:41:56,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:56,947 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 262 transitions. [2021-11-19 13:41:56,947 INFO L471 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) [2021-11-19 13:41:56,947 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 262 transitions. [2021-11-19 13:41:56,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 13:41:56,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:56,948 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:56,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2021-11-19 13:41:57,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:57,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:57,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:57,552 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:57,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:57,552 INFO L85 PathProgramCache]: Analyzing trace with hash 232192162, now seen corresponding path program 2 times [2021-11-19 13:41:57,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:57,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597645757] [2021-11-19 13:41:57,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:41:57,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:57,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:57,555 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:57,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78a87664-1492-4544-84db-546a2ce73b61/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-19 13:41:57,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:41:57,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:41:57,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-19 13:41:57,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:57,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:41:57,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,908 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-19 13:41:57,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2021-11-19 13:41:57,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-19 13:41:57,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:58,043 INFO L354 Elim1Store]: treesize reduction 67, result has 22.1 percent of original size [2021-11-19 13:41:58,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 29 [2021-11-19 13:41:58,130 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:41:58,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-19 13:41:59,682 INFO L354 Elim1Store]: treesize reduction 307, result has 10.0 percent of original size [2021-11-19 13:41:59,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 371 treesize of output 241 [2021-11-19 13:41:59,998 INFO L354 Elim1Store]: treesize reduction 323, result has 9.0 percent of original size [2021-11-19 13:41:59,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 463 treesize of output 317 [2021-11-19 13:42:00,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:00,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-11-19 13:42:00,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:00,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-19 13:42:00,121 INFO L354 Elim1Store]: treesize reduction 482, result has 10.4 percent of original size [2021-11-19 13:42:00,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 216 [2021-11-19 13:42:00,158 INFO L354 Elim1Store]: treesize reduction 22, result has 61.4 percent of original size [2021-11-19 13:42:00,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 166 [2021-11-19 13:42:00,163 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 13:42:00,876 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-19 13:42:00,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 187 treesize of output 172 [2021-11-19 13:42:00,965 INFO L354 Elim1Store]: treesize reduction 122, result has 16.4 percent of original size [2021-11-19 13:42:00,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 170 treesize of output 107 [2021-11-19 13:42:01,030 INFO L354 Elim1Store]: treesize reduction 202, result has 16.5 percent of original size [2021-11-19 13:42:01,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 case distinctions, treesize of input 155 treesize of output 142 [2021-11-19 13:42:01,099 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-19 13:42:01,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 81 [2021-11-19 13:42:01,107 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-19 13:42:01,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 43 [2021-11-19 13:42:01,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-19 13:42:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:01,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:01,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:01,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-19 13:42:01,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:01,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 13:42:01,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:01,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-19 13:42:01,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:01,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-11-19 13:42:01,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:01,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 13:42:01,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:01,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2021-11-19 13:42:03,960 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_166 (_ BitVec 32)) (v_DerPreprocessor_167 (_ BitVec 32)) (v_DerPreprocessor_168 (_ BitVec 32)) (v_DerPreprocessor_169 (_ BitVec 32)) (v_DerPreprocessor_170 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_171 (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.offset_157| (_ BitVec 32)) (|v_ULTIMATE.start_main_~p~0#1.base_163| (_ BitVec 32))) (or (bvsge (let ((.cse3 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_157|)) (.cse4 (bvadd |c_ULTIMATE.start_main_~tail~0#1.offset| (_ bv4 32))) (.cse6 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse4 v_DerPreprocessor_169)))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_163| (store (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_163|) .cse3 v_DerPreprocessor_168) |v_ULTIMATE.start_main_~p~0#1.offset_157| |ULTIMATE.start_main_~x~0#1|))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|))) (store .cse1 |c_ULTIMATE.start_main_~list~0#1.offset| (bvadd (select .cse1 |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv1 32)))))) (select (store (select (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse4 |v_ULTIMATE.start_main_~p~0#1.base_163|)))) (store .cse5 |v_ULTIMATE.start_main_~p~0#1.base_163| (store (store (select .cse5 |v_ULTIMATE.start_main_~p~0#1.base_163|) .cse3 (_ bv0 32)) |v_ULTIMATE.start_main_~p~0#1.offset_157| v_DerPreprocessor_170))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset| v_DerPreprocessor_166) .cse6)) (select (store (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse4 |v_ULTIMATE.start_main_~p~0#1.offset_157|)))) (store .cse7 |v_ULTIMATE.start_main_~p~0#1.base_163| (store (store (select .cse7 |v_ULTIMATE.start_main_~p~0#1.base_163|) .cse3 (_ bv0 32)) |v_ULTIMATE.start_main_~p~0#1.offset_157| v_DerPreprocessor_171))) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset| v_DerPreprocessor_167) .cse6))) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_163|))))))) is different from false [2021-11-19 13:42:05,790 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:05,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24747973 treesize of output 24480796 [2021-11-19 13:43:48,120 WARN L227 SmtUtils]: Spent 1.71m on a formula simplification that was a NOOP. DAG size: 947 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 13:45:31,418 WARN L227 SmtUtils]: Spent 1.72m on a formula simplification that was a NOOP. DAG size: 951 (called from [L 179] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate) [2021-11-19 13:45:31,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:47:16,236 WARN L227 SmtUtils]: Spent 1.75m on a formula simplification that was a NOOP. DAG size: 914 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 13:48:59,468 WARN L227 SmtUtils]: Spent 1.72m on a formula simplification that was a NOOP. DAG size: 942 (called from [L 184] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate) [2021-11-19 13:48:59,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24693697