./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8 --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 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:40:22,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:40:22,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:40:22,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:40:22,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:40:22,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:40:22,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:40:22,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:40:22,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:40:22,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:40:22,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:40:22,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:40:22,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:40:22,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:40:22,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:40:22,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:40:22,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:40:22,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:40:22,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:40:22,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:40:22,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:40:22,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:40:22,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:40:22,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:40:22,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:40:22,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:40:22,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:40:22,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:40:22,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:40:22,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:40:22,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:40:22,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:40:22,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:40:22,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:40:22,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:40:22,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:40:22,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:40:22,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:40:22,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:40:22,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:40:22,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:40:22,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:40:22,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:40:22,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:40:22,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:40:22,424 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:40:22,424 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:40:22,424 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:40:22,424 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:40:22,425 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:40:22,425 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:40:22,425 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:40:22,425 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:40:22,425 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:40:22,426 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:40:22,426 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:40:22,426 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:40:22,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:40:22,427 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:40:22,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:40:22,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:40:22,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:40:22,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:40:22,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:40:22,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:40:22,429 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:40:22,429 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:40:22,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:40:22,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:40:22,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:40:22,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:40:22,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:40:22,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:40:22,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:40:22,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:40:22,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:40:22,432 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:40:22,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:40:22,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:40:22,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:40:22,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:40:22,433 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_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2021-11-07 01:40:22,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:40:22,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:40:22,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:40:22,763 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:40:22,764 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:40:22,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2021-11-07 01:40:22,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/data/47e8135d0/3bd20a27e4e54631870bb79c5f88e34b/FLAG8224130f2 [2021-11-07 01:40:23,387 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:40:23,388 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2021-11-07 01:40:23,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/data/47e8135d0/3bd20a27e4e54631870bb79c5f88e34b/FLAG8224130f2 [2021-11-07 01:40:23,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/data/47e8135d0/3bd20a27e4e54631870bb79c5f88e34b [2021-11-07 01:40:23,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:40:23,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:40:23,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:40:23,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:40:23,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:40:23,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:23" (1/1) ... [2021-11-07 01:40:23,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3f3618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:23, skipping insertion in model container [2021-11-07 01:40:23,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:23" (1/1) ... [2021-11-07 01:40:23,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:40:23,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:40:23,953 WARN L228 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_bbe082cd-8143-4a6b-a04b-99df29443e93/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2021-11-07 01:40:23,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:40:23,983 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:40:23,997 WARN L228 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_bbe082cd-8143-4a6b-a04b-99df29443e93/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2021-11-07 01:40:24,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:40:24,023 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:40:24,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24 WrapperNode [2021-11-07 01:40:24,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:40:24,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:40:24,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:40:24,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:40:24,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:40:24,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:40:24,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:40:24,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:40:24,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:40:24,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:40:24,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:40:24,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:40:24,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (1/1) ... [2021-11-07 01:40:24,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:40:24,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:24,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:40:24,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:40:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:40:24,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:40:24,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:40:24,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:40:24,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:40:24,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:40:24,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:40:24,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:40:24,517 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 01:40:24,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:24 BoogieIcfgContainer [2021-11-07 01:40:24,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:40:24,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:40:24,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:40:24,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:40:24,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:40:23" (1/3) ... [2021-11-07 01:40:24,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d0b447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:24, skipping insertion in model container [2021-11-07 01:40:24,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:24" (2/3) ... [2021-11-07 01:40:24,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d0b447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:24, skipping insertion in model container [2021-11-07 01:40:24,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:24" (3/3) ... [2021-11-07 01:40:24,529 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2021-11-07 01:40:24,535 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:40:24,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:40:24,585 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:40:24,592 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 [2021-11-07 01:40:24,607 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:40:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:40:24,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:24,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:40:24,635 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:24,649 INFO L85 PathProgramCache]: Analyzing trace with hash 93551781, now seen corresponding path program 1 times [2021-11-07 01:40:24,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:24,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184875942] [2021-11-07 01:40:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:24,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:24,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:24,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184875942] [2021-11-07 01:40:24,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184875942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:24,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:24,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:40:24,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472635426] [2021-11-07 01:40:24,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:40:24,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:24,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:40:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:40:24,950 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-07 01:40:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:24,983 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-11-07 01:40:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:40:24,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-07 01:40:24,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:24,999 INFO L225 Difference]: With dead ends: 15 [2021-11-07 01:40:24,999 INFO L226 Difference]: Without dead ends: 8 [2021-11-07 01:40:25,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:40:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-07 01:40:25,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-07 01:40:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-07 01:40:25,034 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-11-07 01:40:25,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:25,034 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-07 01:40:25,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-07 01:40:25,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-07 01:40:25,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:40:25,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:25,035 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:40:25,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:40:25,036 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:25,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:25,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1403146885, now seen corresponding path program 1 times [2021-11-07 01:40:25,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:25,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646052084] [2021-11-07 01:40:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:25,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:25,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:25,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646052084] [2021-11-07 01:40:25,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646052084] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:25,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935103012] [2021-11-07 01:40:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:25,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:25,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:25,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:25,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:40:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:25,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:40:25,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:25,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:25,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935103012] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:25,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [678160305] [2021-11-07 01:40:25,415 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-07 01:40:25,415 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:40:25,422 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:40:25,429 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:40:25,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:40:25,482 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.8 percent of original size [2021-11-07 01:40:25,489 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:25,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-07 01:40:25,498 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:25,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 01:40:25,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-11-07 01:40:25,549 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_26|], 55=[|v_#valid_42|]} [2021-11-07 01:40:25,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-07 01:40:25,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:40:25,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:40:25,654 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:25,671 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:40:25,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:40:25,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:40:25,674 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:25,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:25,737 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:25,865 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:40:25,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-11-07 01:40:25,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:40:25,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:40:25,890 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:25,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:25,931 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:25,947 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-07 01:40:25,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 01:40:25,964 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:25,969 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:424, output treesize:158 [2021-11-07 01:40:25,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,002 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:26,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-07 01:40:26,038 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size 214 [2021-11-07 01:40:26,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2021-11-07 01:40:26,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:26,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:40:26,128 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:26,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:26,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,177 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-07 01:40:26,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-11-07 01:40:26,186 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:26,187 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:215, output treesize:190 [2021-11-07 01:40:26,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:26,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:26,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:26,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,432 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:26,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,452 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:26,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:40:26,457 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:26,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-07 01:40:26,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 501 [2021-11-07 01:40:26,479 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:26,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 426 [2021-11-07 01:40:26,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 514 [2021-11-07 01:40:26,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 75 [2021-11-07 01:40:26,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:26,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:40:26,598 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:26,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:26,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 119 [2021-11-07 01:40:26,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 01:40:26,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 01:40:26,694 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:26,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:26,803 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:26,856 INFO L180 QuantifierPusher]: treesize reduction 132, result has 78.6 percent of original size [2021-11-07 01:40:26,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 485 [2021-11-07 01:40:26,869 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:40:26,869 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:669, output treesize:485 [2021-11-07 01:40:26,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:26,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,059 INFO L180 QuantifierPusher]: treesize reduction 48, result has 74.6 percent of original size [2021-11-07 01:40:27,063 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:40:27,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:40:27,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 01:40:27,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:27,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:40:27,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:40:27,118 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-07 01:40:27,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-07 01:40:27,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:40:27,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:40:27,132 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:40:27,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:27,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 01:40:27,144 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:40:27,145 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:135, output treesize:109 [2021-11-07 01:40:27,154 INFO L180 QuantifierPusher]: treesize reduction 49, result has 57.0 percent of original size [2021-11-07 01:40:27,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 01:40:27,166 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:40:27,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:40:27,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:40:27,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-07 01:40:27,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968353145] [2021-11-07 01:40:27,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:40:27,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:40:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:40:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:40:27,725 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:27,748 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2021-11-07 01:40:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:27,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:40:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:27,749 INFO L225 Difference]: With dead ends: 14 [2021-11-07 01:40:27,749 INFO L226 Difference]: Without dead ends: 9 [2021-11-07 01:40:27,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:40:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-07 01:40:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-07 01:40:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-07 01:40:27,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-11-07 01:40:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:27,754 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-07 01:40:27,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-07 01:40:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:40:27,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:27,755 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-07 01:40:27,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 01:40:27,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:27,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:27,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:27,973 INFO L85 PathProgramCache]: Analyzing trace with hash -556165275, now seen corresponding path program 2 times [2021-11-07 01:40:27,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:40:27,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420108805] [2021-11-07 01:40:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:27,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:40:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:28,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:40:28,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420108805] [2021-11-07 01:40:28,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420108805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:40:28,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670816209] [2021-11-07 01:40:28,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:40:28,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:28,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:28,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:28,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:40:28,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:40:28,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:40:28,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:40:28,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:28,372 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 47 treesize of output 45 [2021-11-07 01:40:28,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:28,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:28,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:28,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 53 [2021-11-07 01:40:28,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:28,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:28,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:28,611 INFO L354 Elim1Store]: treesize reduction 514, result has 10.5 percent of original size [2021-11-07 01:40:28,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 148 treesize of output 168 [2021-11-07 01:40:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:29,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:29,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:29,781 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 2057628 treesize of output 1878692 [2021-11-07 01:40:41,803 WARN L207 SmtUtils]: Spent 7.71 s on a formula simplification. DAG size of input: 854 DAG size of output: 854 [2021-11-07 01:40:48,678 INFO L354 Elim1Store]: treesize reduction 110, result has 55.3 percent of original size [2021-11-07 01:40:48,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 9078666 treesize of output 6702177 [2021-11-07 01:49:26,364 WARN L207 SmtUtils]: Spent 8.63 m on a formula simplification. DAG size of input: 2420 DAG size of output: 2303 [2021-11-07 01:49:45,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-07 01:49:45,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1147853946] [2021-11-07 01:49:45,239 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-07 01:49:45,240 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:49:45,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:49:45,241 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:49:45,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:49:45,250 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.8 percent of original size [2021-11-07 01:49:45,252 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:45,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 01:49:45,254 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:45,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-07 01:49:45,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-11-07 01:49:45,264 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_27|], 55=[|v_#valid_44|]} [2021-11-07 01:49:45,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-07 01:49:45,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:49:45,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:49:45,341 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:45,352 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:49:45,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:49:45,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:49:45,354 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:45,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:45,366 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,455 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:49:45,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-11-07 01:49:45,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:49:45,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:49:45,463 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:45,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:45,475 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,479 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-07 01:49:45,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 01:49:45,483 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:49:45,483 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:424, output treesize:158 [2021-11-07 01:49:45,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,490 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:45,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:49:45,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-07 01:49:45,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 75 [2021-11-07 01:49:45,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:49:45,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:49:45,531 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:45,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:45,543 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-07 01:49:45,550 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:49:45,550 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:237, output treesize:211 [2021-11-07 01:49:45,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:45,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:45,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:45,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,710 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:45,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,717 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:45,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:49:45,721 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:45,722 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-07 01:49:45,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 522 [2021-11-07 01:49:45,740 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:45,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 447 [2021-11-07 01:49:45,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 535 [2021-11-07 01:49:45,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 75 [2021-11-07 01:49:45,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:49:45,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:49:45,841 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:45,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:45,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 135 [2021-11-07 01:49:45,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-07 01:49:45,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:45,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-07 01:49:45,916 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:45,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:45,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:46,045 INFO L180 QuantifierPusher]: treesize reduction 137, result has 78.5 percent of original size [2021-11-07 01:49:46,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 501 [2021-11-07 01:49:46,065 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:49:46,065 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:690, output treesize:501 [2021-11-07 01:49:46,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:46,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:46,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:46,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:46,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:46,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:46,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:46,202 INFO L180 QuantifierPusher]: treesize reduction 48, result has 74.6 percent of original size [2021-11-07 01:49:46,204 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:46,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:46,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:49:46,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 01:49:46,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:46,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:46,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:46,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:46,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:49:46,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:49:46,253 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-07 01:49:46,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-07 01:49:46,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:46,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:49:46,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:46,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:49:46,265 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:46,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:46,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:46,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:46,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 01:49:46,276 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:49:46,277 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:135, output treesize:109 [2021-11-07 01:49:46,291 INFO L180 QuantifierPusher]: treesize reduction 49, result has 57.0 percent of original size [2021-11-07 01:49:46,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 01:49:46,303 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:49:46,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:49:46,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:49:46,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-07 01:49:46,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185582074] [2021-11-07 01:49:46,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:49:46,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:49:46,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:49:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:49:46,902 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:47,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:47,004 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-11-07 01:49:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:49:47,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 01:49:47,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:47,007 INFO L225 Difference]: With dead ends: 14 [2021-11-07 01:49:47,007 INFO L226 Difference]: Without dead ends: 12 [2021-11-07 01:49:47,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:49:47,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-07 01:49:47,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-11-07 01:49:47,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-07 01:49:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-07 01:49:47,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2021-11-07 01:49:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:47,011 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-07 01:49:47,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-07 01:49:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:49:47,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:47,016 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:47,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:47,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 01:49:47,228 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:49:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1269222745, now seen corresponding path program 1 times [2021-11-07 01:49:47,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:49:47,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994052602] [2021-11-07 01:49:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:47,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:49:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:47,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:49:47,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994052602] [2021-11-07 01:49:47,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994052602] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:49:47,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967249149] [2021-11-07 01:49:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:47,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:49:47,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:49:47,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:49:47,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:49:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:47,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:49:47,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:47,683 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 153 treesize of output 145 [2021-11-07 01:49:47,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:47,798 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-07 01:49:47,802 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 2 case distinctions, treesize of input 53 treesize of output 59 [2021-11-07 01:49:48,300 INFO L354 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2021-11-07 01:49:48,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 42 [2021-11-07 01:49:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:48,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:48,464 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:48,464 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 734 treesize of output 678 [2021-11-07 01:49:58,483 INFO L354 Elim1Store]: treesize reduction 43, result has 55.7 percent of original size [2021-11-07 01:49:58,483 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 730 treesize of output 591 [2021-11-07 01:49:59,205 INFO L354 Elim1Store]: treesize reduction 38, result has 28.3 percent of original size [2021-11-07 01:49:59,205 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 255 treesize of output 173 [2021-11-07 01:49:59,214 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 390 treesize of output 374 [2021-11-07 01:49:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:59,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967249149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:49:59,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [608269986] [2021-11-07 01:49:59,412 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 01:49:59,412 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:49:59,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:49:59,413 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:49:59,413 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:49:59,427 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.8 percent of original size [2021-11-07 01:49:59,429 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:59,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 01:49:59,432 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:59,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-07 01:49:59,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-11-07 01:49:59,442 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_28|], 55=[|v_#valid_46|]} [2021-11-07 01:49:59,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:49:59,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:49:59,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:49:59,454 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:59,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-07 01:49:59,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:49:59,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:49:59,499 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:59,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:59,509 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,595 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:49:59,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-11-07 01:49:59,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:49:59,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:49:59,603 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:59,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:59,612 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,616 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-07 01:49:59,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 01:49:59,620 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:49:59,620 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:424, output treesize:158 [2021-11-07 01:49:59,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,637 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:59,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:49:59,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-07 01:49:59,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 75 [2021-11-07 01:49:59,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:49:59,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:49:59,682 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:59,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:59,692 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-07 01:49:59,699 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:49:59,700 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:237, output treesize:211 [2021-11-07 01:49:59,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:59,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:59,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:49:59,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,819 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:59,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,825 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:59,826 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:49:59,828 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:59,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-07 01:49:59,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 522 [2021-11-07 01:49:59,836 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:49:59,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 447 [2021-11-07 01:49:59,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 535 [2021-11-07 01:49:59,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 75 [2021-11-07 01:49:59,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:49:59,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:49:59,910 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:59,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:59,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 135 [2021-11-07 01:49:59,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-07 01:49:59,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:49:59,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-07 01:49:59,964 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:49:59,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,039 INFO L180 QuantifierPusher]: treesize reduction 137, result has 78.5 percent of original size [2021-11-07 01:50:00,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 501 [2021-11-07 01:50:00,047 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:50:00,047 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:690, output treesize:501 [2021-11-07 01:50:00,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,153 INFO L180 QuantifierPusher]: treesize reduction 48, result has 74.6 percent of original size [2021-11-07 01:50:00,155 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:00,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:50:00,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 01:50:00,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:00,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:00,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:00,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:00,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:50:00,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:50:00,199 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-07 01:50:00,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-07 01:50:00,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:50:00,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:50:00,204 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:00,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,208 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 01:50:00,211 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:00,211 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:135, output treesize:109 [2021-11-07 01:50:00,219 INFO L180 QuantifierPusher]: treesize reduction 49, result has 57.0 percent of original size [2021-11-07 01:50:00,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 01:50:00,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-07 01:50:00,232 INFO L180 QuantifierPusher]: treesize reduction 9, result has 94.8 percent of original size [2021-11-07 01:50:00,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:50:00,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:50:00,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-07 01:50:00,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,361 INFO L180 QuantifierPusher]: treesize reduction 48, result has 62.5 percent of original size [2021-11-07 01:50:00,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:50:00,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:00,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:50:00,383 INFO L180 QuantifierPusher]: treesize reduction 48, result has 62.5 percent of original size [2021-11-07 01:50:00,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:50:00,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:00,438 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:50:01,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:50:01,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:50:01,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2021-11-07 01:50:01,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180788174] [2021-11-07 01:50:01,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 01:50:01,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:50:01,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 01:50:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:50:01,603 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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) [2021-11-07 01:50:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:01,946 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-11-07 01:50:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:50:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 10 [2021-11-07 01:50:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:01,948 INFO L225 Difference]: With dead ends: 18 [2021-11-07 01:50:01,948 INFO L226 Difference]: Without dead ends: 16 [2021-11-07 01:50:01,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:50:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-07 01:50:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-11-07 01:50:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-07 01:50:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-07 01:50:01,953 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2021-11-07 01:50:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:01,953 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-07 01:50:01,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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) [2021-11-07 01:50:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-07 01:50:01,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:50:01,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:01,954 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2021-11-07 01:50:01,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:02,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-07 01:50:02,155 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:50:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1472175387, now seen corresponding path program 2 times [2021-11-07 01:50:02,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:50:02,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190619010] [2021-11-07 01:50:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:02,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:50:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:02,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:50:02,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190619010] [2021-11-07 01:50:02,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190619010] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:50:02,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310085176] [2021-11-07 01:50:02,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:50:02,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:50:02,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:50:02,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:50:02,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:50:02,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 01:50:02,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:50:02,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:50:02,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:02,629 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 47 treesize of output 45 [2021-11-07 01:50:02,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:02,745 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-07 01:50:02,746 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 2 case distinctions, treesize of input 55 treesize of output 61 [2021-11-07 01:50:03,578 INFO L354 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2021-11-07 01:50:03,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 91 treesize of output 47 [2021-11-07 01:50:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:03,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:03,806 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:03,806 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 734 treesize of output 678 [2021-11-07 01:50:03,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:50:03,842 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-11-07 01:50:03,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 298 treesize of output 216 [2021-11-07 01:50:03,859 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 654 treesize of output 630 [2021-11-07 01:50:04,063 INFO L354 Elim1Store]: treesize reduction 43, result has 55.7 percent of original size [2021-11-07 01:50:04,064 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 1607 treesize of output 1288 [2021-11-07 01:50:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:07,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310085176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:50:07,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [660600667] [2021-11-07 01:50:07,114 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 01:50:07,114 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:50:07,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:50:07,115 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:50:07,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:50:07,125 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.8 percent of original size [2021-11-07 01:50:07,126 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:07,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 01:50:07,128 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:07,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-07 01:50:07,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-11-07 01:50:07,138 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_29|], 55=[|v_#valid_48|]} [2021-11-07 01:50:07,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-07 01:50:07,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:50:07,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:50:07,211 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,220 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:50:07,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:50:07,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:50:07,223 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,238 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,317 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:50:07,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-11-07 01:50:07,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:50:07,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:50:07,329 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,359 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,363 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-07 01:50:07,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 01:50:07,371 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,371 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:424, output treesize:158 [2021-11-07 01:50:07,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,379 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:07,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-07 01:50:07,385 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size 214 [2021-11-07 01:50:07,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2021-11-07 01:50:07,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:50:07,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:50:07,417 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,427 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,431 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-07 01:50:07,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-11-07 01:50:07,436 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,436 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:215, output treesize:190 [2021-11-07 01:50:07,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,564 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:07,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,570 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:07,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:50:07,573 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:07,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-07 01:50:07,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 501 [2021-11-07 01:50:07,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:07,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 426 [2021-11-07 01:50:07,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 514 [2021-11-07 01:50:07,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 75 [2021-11-07 01:50:07,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:50:07,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:50:07,659 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 119 [2021-11-07 01:50:07,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 01:50:07,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 01:50:07,716 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,773 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,799 INFO L180 QuantifierPusher]: treesize reduction 132, result has 78.6 percent of original size [2021-11-07 01:50:07,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 485 [2021-11-07 01:50:07,807 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:50:07,808 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:669, output treesize:485 [2021-11-07 01:50:07,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,908 INFO L180 QuantifierPusher]: treesize reduction 48, result has 74.6 percent of original size [2021-11-07 01:50:07,910 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:07,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:50:07,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 01:50:07,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:07,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:50:07,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:50:07,954 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-07 01:50:07,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-07 01:50:07,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:50:07,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:50:07,961 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:07,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 01:50:07,969 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:07,969 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:135, output treesize:109 [2021-11-07 01:50:07,981 INFO L180 QuantifierPusher]: treesize reduction 49, result has 57.0 percent of original size [2021-11-07 01:50:07,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 01:50:07,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:07,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-07 01:50:07,995 INFO L180 QuantifierPusher]: treesize reduction 9, result has 94.8 percent of original size [2021-11-07 01:50:08,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:50:08,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:08,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:50:08,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:08,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-07 01:50:08,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,151 INFO L180 QuantifierPusher]: treesize reduction 48, result has 62.5 percent of original size [2021-11-07 01:50:08,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:50:08,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:08,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:50:08,174 INFO L180 QuantifierPusher]: treesize reduction 48, result has 62.5 percent of original size [2021-11-07 01:50:08,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:50:08,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:08,235 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:50:09,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:50:09,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:50:09,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2021-11-07 01:50:09,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536214036] [2021-11-07 01:50:09,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:50:09,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:50:09,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:50:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:50:09,391 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:10,211 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-11-07 01:50:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:50:10,212 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 01:50:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:10,212 INFO L225 Difference]: With dead ends: 42 [2021-11-07 01:50:10,213 INFO L226 Difference]: Without dead ends: 40 [2021-11-07 01:50:10,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=263, Invalid=1377, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 01:50:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-07 01:50:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 19. [2021-11-07 01:50:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2021-11-07 01:50:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-11-07 01:50:10,223 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2021-11-07 01:50:10,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:10,223 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-11-07 01:50:10,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-11-07 01:50:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:50:10,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:10,225 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1] [2021-11-07 01:50:10,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:10,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:50:10,446 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:50:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 35634597, now seen corresponding path program 3 times [2021-11-07 01:50:10,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:50:10,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402324275] [2021-11-07 01:50:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:10,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:50:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:11,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:50:11,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402324275] [2021-11-07 01:50:11,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402324275] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:50:11,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664188277] [2021-11-07 01:50:11,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:50:11,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:50:11,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:50:11,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:50:11,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:50:11,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:50:11,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:50:11,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 01:50:11,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:11,418 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 47 treesize of output 45 [2021-11-07 01:50:11,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:11,590 INFO L354 Elim1Store]: treesize reduction 51, result has 19.0 percent of original size [2021-11-07 01:50:11,591 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 2 case distinctions, treesize of input 36 treesize of output 43 [2021-11-07 01:50:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:11,726 INFO L354 Elim1Store]: treesize reduction 341, result has 9.8 percent of original size [2021-11-07 01:50:11,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 107 [2021-11-07 01:50:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:12,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:13,225 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:13,228 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 1148194 treesize of output 1045674 [2021-11-07 01:50:15,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-07 01:50:15,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1321930245] [2021-11-07 01:50:15,144 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 01:50:15,144 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:50:15,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:50:15,145 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:50:15,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:50:15,155 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.8 percent of original size [2021-11-07 01:50:15,155 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:15,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-07 01:50:15,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:15,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-07 01:50:15,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-11-07 01:50:15,167 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_30|], 55=[|v_#valid_50|]} [2021-11-07 01:50:15,176 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:50:15,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:50:15,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:50:15,178 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-07 01:50:15,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:50:15,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:50:15,223 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,323 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:50:15,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-11-07 01:50:15,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:50:15,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:50:15,330 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,339 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,342 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-07 01:50:15,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 01:50:15,345 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,345 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:424, output treesize:158 [2021-11-07 01:50:15,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,352 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:15,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-07 01:50:15,357 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size 214 [2021-11-07 01:50:15,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2021-11-07 01:50:15,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:50:15,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:50:15,392 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,401 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,404 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-07 01:50:15,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-11-07 01:50:15,413 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,413 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:215, output treesize:190 [2021-11-07 01:50:15,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,519 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:15,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,526 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:15,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-07 01:50:15,528 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:15,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:50:15,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 501 [2021-11-07 01:50:15,537 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:15,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 426 [2021-11-07 01:50:15,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 514 [2021-11-07 01:50:15,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 119 [2021-11-07 01:50:15,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 01:50:15,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 01:50:15,655 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 75 [2021-11-07 01:50:15,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:50:15,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 01:50:15,694 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,744 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,770 INFO L180 QuantifierPusher]: treesize reduction 132, result has 78.6 percent of original size [2021-11-07 01:50:15,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 485 [2021-11-07 01:50:15,781 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:50:15,781 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:669, output treesize:485 [2021-11-07 01:50:15,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,876 INFO L180 QuantifierPusher]: treesize reduction 48, result has 74.6 percent of original size [2021-11-07 01:50:15,878 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:50:15,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:50:15,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 01:50:15,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:15,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:50:15,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:50:15,918 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-07 01:50:15,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-07 01:50:15,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:50:15,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 01:50:15,930 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-11-07 01:50:15,937 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:50:15,937 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:135, output treesize:109 [2021-11-07 01:50:15,943 INFO L180 QuantifierPusher]: treesize reduction 49, result has 57.0 percent of original size [2021-11-07 01:50:15,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 01:50:15,950 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-07 01:50:15,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:15,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-07 01:50:15,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:15,997 INFO L180 QuantifierPusher]: treesize reduction 48, result has 62.5 percent of original size [2021-11-07 01:50:15,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:50:16,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:16,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:50:16,017 INFO L180 QuantifierPusher]: treesize reduction 48, result has 62.5 percent of original size [2021-11-07 01:50:16,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:50:16,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:16,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:16,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:16,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:50:16,073 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:50:17,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:50:17,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:50:17,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-07 01:50:17,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423768285] [2021-11-07 01:50:17,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:50:17,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:50:17,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:50:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:50:17,238 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 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) [2021-11-07 01:50:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:18,123 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2021-11-07 01:50:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:50:18,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 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 15 [2021-11-07 01:50:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:18,124 INFO L225 Difference]: With dead ends: 55 [2021-11-07 01:50:18,125 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 01:50:18,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=209, Invalid=1351, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 01:50:18,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 01:50:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 20. [2021-11-07 01:50:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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) [2021-11-07 01:50:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-11-07 01:50:18,135 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2021-11-07 01:50:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:18,135 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-11-07 01:50:18,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 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) [2021-11-07 01:50:18,136 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-11-07 01:50:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:50:18,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:18,137 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2021-11-07 01:50:18,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 01:50:18,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-11-07 01:50:18,352 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:50:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:18,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1660792359, now seen corresponding path program 4 times [2021-11-07 01:50:18,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:50:18,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118010992] [2021-11-07 01:50:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:18,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:50:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:18,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:50:18,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118010992] [2021-11-07 01:50:18,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118010992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:50:18,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285615604] [2021-11-07 01:50:18,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:50:18,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:50:18,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:50:18,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:50:18,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe082cd-8143-4a6b-a04b-99df29443e93/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:50:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:19,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 01:50:19,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:19,090 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 153 treesize of output 149 [2021-11-07 01:50:19,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 53 [2021-11-07 01:50:19,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:50:19,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 87 [2021-11-07 01:50:20,134 INFO L354 Elim1Store]: treesize reduction 442, result has 1.6 percent of original size [2021-11-07 01:50:20,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 106 treesize of output 48 [2021-11-07 01:50:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:20,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:20,541 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:50:20,544 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 8422620 treesize of output 7695332 [2021-11-07 01:50:29,174 WARN L207 SmtUtils]: Spent 8.63 s on a formula simplification that was a NOOP. DAG size: 1501 [2021-11-07 01:51:02,989 WARN L207 SmtUtils]: Spent 33.43 s on a formula simplification. DAG size of input: 1505 DAG size of output: 1505 [2021-11-07 01:51:30,378 WARN L207 SmtUtils]: Spent 6.55 s on a formula simplification. DAG size of input: 1501 DAG size of output: 1501 [2021-11-07 01:51:56,610 WARN L207 SmtUtils]: Spent 19.73 s on a formula simplification. DAG size of input: 1498 DAG size of output: 1499 [2021-11-07 01:52:15,844 WARN L207 SmtUtils]: Spent 10.69 s on a formula simplification. DAG size of input: 1497 DAG size of output: 1497 [2021-11-07 01:52:30,676 WARN L207 SmtUtils]: Spent 8.89 s on a formula simplification. DAG size of input: 1261 DAG size of output: 1261 [2021-11-07 01:52:33,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:52:33,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:52:33,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:52:33,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:52:33,819 INFO L354 Elim1Store]: treesize reduction 24, result has 76.2 percent of original size [2021-11-07 01:52:33,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 4046634 treesize of output 3160890