./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/running_example.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:55:59,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:55:59,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:56:00,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:56:00,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:56:00,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:56:00,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:56:00,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:56:00,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:56:00,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:56:00,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:56:00,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:56:00,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:56:00,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:56:00,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:56:00,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:56:00,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:56:00,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:56:00,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:56:00,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:56:00,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:56:00,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:56:00,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:56:00,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:56:00,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:56:00,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:56:00,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:56:00,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:56:00,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:56:00,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:56:00,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:56:00,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:56:00,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:56:00,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:56:00,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:56:00,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:56:00,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:56:00,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:56:00,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:56:00,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:56:00,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:56:00,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:56:00,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:56:00,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:56:00,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:56:00,130 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:56:00,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:56:00,131 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:56:00,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:56:00,131 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:56:00,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:56:00,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:56:00,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:56:00,133 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:56:00,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:56:00,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:56:00,134 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:56:00,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:56:00,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:56:00,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:56:00,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:56:00,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:56:00,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:56:00,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:56:00,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:56:00,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:56:00,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:56:00,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:56:00,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:56:00,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:56:00,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:56:00,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:56:00,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:56:00,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:56:00,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:56:00,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:56:00,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:56:00,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:56:00,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:56:00,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:56:00,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:56:00,142 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_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f [2021-10-29 04:56:00,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:56:00,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:56:00,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:56:00,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:56:00,486 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:56:00,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/heap-data/running_example.i [2021-10-29 04:56:00,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data/2287c85bb/fce1237bf40d49c9bc1caf84bfa77ece/FLAG4a228336c [2021-10-29 04:56:01,156 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:56:01,159 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/sv-benchmarks/c/heap-data/running_example.i [2021-10-29 04:56:01,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data/2287c85bb/fce1237bf40d49c9bc1caf84bfa77ece/FLAG4a228336c [2021-10-29 04:56:01,437 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data/2287c85bb/fce1237bf40d49c9bc1caf84bfa77ece [2021-10-29 04:56:01,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:56:01,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:56:01,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:56:01,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:56:01,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:56:01,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:56:01" (1/1) ... [2021-10-29 04:56:01,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ffd77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:01, skipping insertion in model container [2021-10-29 04:56:01,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:56:01" (1/1) ... [2021-10-29 04:56:01,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:56:01,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:56:01,862 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_88928f7a-2313-43b8-a5e8-7091249124ec/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-10-29 04:56:01,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:56:01,893 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:56:01,977 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_88928f7a-2313-43b8-a5e8-7091249124ec/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-10-29 04:56:01,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:56:02,014 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:56:02,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02 WrapperNode [2021-10-29 04:56:02,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:56:02,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:56:02,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:56:02,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:56:02,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:56:02,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:56:02,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:56:02,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:56:02,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:56:02,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:56:02,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:56:02,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:56:02,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (1/1) ... [2021-10-29 04:56:02,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:56:02,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:02,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:56:02,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:56:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 04:56:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:56:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 04:56:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 04:56:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:56:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 04:56:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:56:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:56:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:56:02,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:56:02,808 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 04:56:02,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:56:02 BoogieIcfgContainer [2021-10-29 04:56:02,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:56:02,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:56:02,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:56:02,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:56:02,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:56:01" (1/3) ... [2021-10-29 04:56:02,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28575030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:56:02, skipping insertion in model container [2021-10-29 04:56:02,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:02" (2/3) ... [2021-10-29 04:56:02,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28575030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:56:02, skipping insertion in model container [2021-10-29 04:56:02,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:56:02" (3/3) ... [2021-10-29 04:56:02,823 INFO L111 eAbstractionObserver]: Analyzing ICFG running_example.i [2021-10-29 04:56:02,829 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:56:02,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:56:02,907 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:56:02,915 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 [2021-10-29 04:56:02,915 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:56:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:56:02,942 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:02,943 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:56:02,943 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1470856896, now seen corresponding path program 1 times [2021-10-29 04:56:02,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:02,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108882931] [2021-10-29 04:56:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:02,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:03,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:56:03,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108882931] [2021-10-29 04:56:03,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108882931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:03,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:03,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:56:03,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187837938] [2021-10-29 04:56:03,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:56:03,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:56:03,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:56:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:56:03,283 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:03,299 INFO L93 Difference]: Finished difference Result 18 states and 26 transitions. [2021-10-29 04:56:03,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:56:03,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 04:56:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:03,312 INFO L225 Difference]: With dead ends: 18 [2021-10-29 04:56:03,312 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 04:56:03,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:56:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 04:56:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 04:56:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-10-29 04:56:03,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 6 [2021-10-29 04:56:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:03,356 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-29 04:56:03,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-10-29 04:56:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:56:03,357 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:03,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:03,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:56:03,359 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:03,363 INFO L85 PathProgramCache]: Analyzing trace with hash 237321750, now seen corresponding path program 1 times [2021-10-29 04:56:03,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:03,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992995948] [2021-10-29 04:56:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:03,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:03,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:56:03,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992995948] [2021-10-29 04:56:03,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992995948] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:03,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:03,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:56:03,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230781114] [2021-10-29 04:56:03,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:56:03,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:56:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:56:03,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:56:03,543 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:03,654 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2021-10-29 04:56:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:56:03,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:56:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:03,656 INFO L225 Difference]: With dead ends: 22 [2021-10-29 04:56:03,656 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 04:56:03,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:56:03,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 04:56:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-10-29 04:56:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-10-29 04:56:03,663 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 8 [2021-10-29 04:56:03,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:03,664 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-10-29 04:56:03,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-10-29 04:56:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 04:56:03,669 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:03,669 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:03,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:56:03,670 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:03,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash 540596448, now seen corresponding path program 1 times [2021-10-29 04:56:03,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:03,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783846146] [2021-10-29 04:56:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:03,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:03,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:56:03,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783846146] [2021-10-29 04:56:03,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783846146] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:56:03,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052560535] [2021-10-29 04:56:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:03,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:03,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:56:03,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:56:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:04,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-29 04:56:04,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:04,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:04,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:04,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-29 04:56:04,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:04,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-29 04:56:04,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 04:56:04,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2021-10-29 04:56:04,499 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 43 [2021-10-29 04:56:04,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 04:56:04,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-29 04:56:04,538 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 14 treesize of output 10 [2021-10-29 04:56:04,540 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 04:56:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:04,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:04,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-29 04:56:04,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1444489134] [2021-10-29 04:56:04,700 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 04:56:04,701 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:56:04,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:56:04,715 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:56:04,715 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:56:04,769 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,771 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:04,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 04:56:04,774 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:04,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:56:04,779 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:04,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:56:04,782 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:04,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 04:56:04,786 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:04,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,789 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:04,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 04:56:04,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:56:04,796 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:04,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,801 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:04,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 04:56:04,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-29 04:56:04,806 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:04,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:04,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 04:56:04,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-10-29 04:56:04,830 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@35eeaddb at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-29 04:56:04,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 04:56:04,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-29 04:56:04,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78166999] [2021-10-29 04:56:04,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:56:04,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:56:04,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:56:04,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:56:04,837 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:56:04,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:05,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:05,065 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@35eeaddb at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-29 04:56:05,068 INFO L168 Benchmark]: Toolchain (without parser) took 3625.41 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 74.7 MB in the beginning and 74.9 MB in the end (delta: -226.6 kB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:05,069 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:56:05,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.78 ms. Allocated memory is still 109.1 MB. Free memory was 74.5 MB in the beginning and 76.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:05,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.26 ms. Allocated memory is still 109.1 MB. Free memory was 76.4 MB in the beginning and 74.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:05,070 INFO L168 Benchmark]: Boogie Preprocessor took 54.87 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:56:05,071 INFO L168 Benchmark]: RCFGBuilder took 647.84 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 57.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:05,072 INFO L168 Benchmark]: TraceAbstraction took 2253.09 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 56.9 MB in the beginning and 74.9 MB in the end (delta: -18.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:05,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 571.78 ms. Allocated memory is still 109.1 MB. Free memory was 74.5 MB in the beginning and 76.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.26 ms. Allocated memory is still 109.1 MB. Free memory was 76.4 MB in the beginning and 74.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.87 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 647.84 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 57.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2253.09 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 56.9 MB in the beginning and 74.9 MB in the end (delta: -18.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@35eeaddb de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@35eeaddb: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-29 04:56:05,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:56:08,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:56:08,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:56:08,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:56:08,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:56:08,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:56:08,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:56:08,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:56:08,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:56:08,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:56:08,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:56:08,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:56:08,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:56:08,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:56:08,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:56:08,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:56:08,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:56:08,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:56:08,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:56:08,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:56:08,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:56:08,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:56:08,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:56:08,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:56:08,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:56:08,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:56:08,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:56:08,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:56:08,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:56:08,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:56:08,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:56:08,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:56:08,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:56:08,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:56:08,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:56:08,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:56:08,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:56:08,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:56:08,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:56:08,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:56:08,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:56:08,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:56:08,357 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:56:08,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:56:08,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:56:08,360 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:56:08,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:56:08,360 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:56:08,361 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:56:08,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:56:08,361 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:56:08,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:56:08,364 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:56:08,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:56:08,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:56:08,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:56:08,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:56:08,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:56:08,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:56:08,366 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:56:08,367 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:56:08,367 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:56:08,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:56:08,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:56:08,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:56:08,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:56:08,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:56:08,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:56:08,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:56:08,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:56:08,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:56:08,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:56:08,370 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:56:08,370 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:56:08,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:56:08,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:56:08,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:56:08,372 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f [2021-10-29 04:56:08,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:56:08,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:56:08,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:56:08,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:56:08,999 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:56:09,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/heap-data/running_example.i [2021-10-29 04:56:09,094 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data/02b2971c1/207f11d7c0ae41b8890fd68fb1cd4ec8/FLAGfc61050c2 [2021-10-29 04:56:09,862 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:56:09,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/sv-benchmarks/c/heap-data/running_example.i [2021-10-29 04:56:09,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data/02b2971c1/207f11d7c0ae41b8890fd68fb1cd4ec8/FLAGfc61050c2 [2021-10-29 04:56:10,082 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/data/02b2971c1/207f11d7c0ae41b8890fd68fb1cd4ec8 [2021-10-29 04:56:10,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:56:10,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:56:10,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:56:10,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:56:10,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:56:10,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:10,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54285e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10, skipping insertion in model container [2021-10-29 04:56:10,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:10,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:56:10,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:56:10,667 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_88928f7a-2313-43b8-a5e8-7091249124ec/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-10-29 04:56:10,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:56:10,705 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:56:10,780 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_88928f7a-2313-43b8-a5e8-7091249124ec/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-10-29 04:56:10,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:56:10,853 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:56:10,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10 WrapperNode [2021-10-29 04:56:10,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:56:10,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:56:10,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:56:10,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:56:10,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:10,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:10,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:56:10,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:56:10,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:56:10,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:56:10,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:10,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:10,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:10,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:10,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:11,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:11,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:11,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:56:11,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:56:11,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:56:11,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:56:11,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (1/1) ... [2021-10-29 04:56:11,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:56:11,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:11,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:56:11,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:56:11,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 04:56:11,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 04:56:11,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 04:56:11,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:56:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 04:56:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 04:56:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:56:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:56:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:56:11,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:56:11,824 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 04:56:11,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:56:11 BoogieIcfgContainer [2021-10-29 04:56:11,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:56:11,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:56:11,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:56:11,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:56:11,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:56:10" (1/3) ... [2021-10-29 04:56:11,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e2016d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:56:11, skipping insertion in model container [2021-10-29 04:56:11,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:10" (2/3) ... [2021-10-29 04:56:11,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e2016d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:56:11, skipping insertion in model container [2021-10-29 04:56:11,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:56:11" (3/3) ... [2021-10-29 04:56:11,841 INFO L111 eAbstractionObserver]: Analyzing ICFG running_example.i [2021-10-29 04:56:11,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:56:11,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:56:11,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:56:11,940 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 [2021-10-29 04:56:11,940 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:56:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:56:11,981 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:11,982 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:11,983 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:11,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash 508893296, now seen corresponding path program 1 times [2021-10-29 04:56:12,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:56:12,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397729823] [2021-10-29 04:56:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:12,010 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:56:12,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:56:12,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:56:12,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:56:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:12,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:56:12,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:12,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:12,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:56:12,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397729823] [2021-10-29 04:56:12,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397729823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:12,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:12,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:56:12,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410013726] [2021-10-29 04:56:12,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:56:12,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:56:12,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:56:12,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:56:12,350 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:12,369 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2021-10-29 04:56:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:56:12,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:56:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:12,381 INFO L225 Difference]: With dead ends: 26 [2021-10-29 04:56:12,382 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 04:56:12,385 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:56:12,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 04:56:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-29 04:56:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2021-10-29 04:56:12,429 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 8 [2021-10-29 04:56:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:12,429 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-29 04:56:12,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2021-10-29 04:56:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:56:12,431 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:12,431 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:12,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:12,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:56:12,648 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:12,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash 307872697, now seen corresponding path program 1 times [2021-10-29 04:56:12,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:56:12,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517269332] [2021-10-29 04:56:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:12,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:56:12,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:56:12,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:56:12,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:56:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:12,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 04:56:12,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:12,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:12,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-29 04:56:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:13,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:13,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:56:13,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517269332] [2021-10-29 04:56:13,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517269332] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:13,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:13,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-29 04:56:13,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582198960] [2021-10-29 04:56:13,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:56:13,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:56:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:56:13,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:56:13,168 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:13,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:13,967 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2021-10-29 04:56:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 04:56:13,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 04:56:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:13,972 INFO L225 Difference]: With dead ends: 52 [2021-10-29 04:56:13,972 INFO L226 Difference]: Without dead ends: 43 [2021-10-29 04:56:13,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-29 04:56:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-29 04:56:13,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2021-10-29 04:56:13,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2021-10-29 04:56:13,984 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 9 [2021-10-29 04:56:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:13,985 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2021-10-29 04:56:13,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:13,986 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2021-10-29 04:56:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 04:56:13,987 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:13,987 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:14,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:14,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:56:14,204 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:14,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash -44654956, now seen corresponding path program 1 times [2021-10-29 04:56:14,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:56:14,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075901640] [2021-10-29 04:56:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:14,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:56:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:56:14,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:56:14,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:56:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:14,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 04:56:14,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:14,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:14,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:56:14,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:14,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 04:56:14,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:14,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 04:56:14,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:14,771 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-10-29 04:56:14,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 51 [2021-10-29 04:56:14,795 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 04:56:14,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-10-29 04:56:14,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-29 04:56:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:14,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:15,092 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 04:56:15,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 04:56:17,180 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_18 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_18 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_4)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_18 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_18) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_18) v_DerPreprocessor_3) v_ULTIMATE.start_main_~p~0.offset_18 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_18)))))) is different from false [2021-10-29 04:56:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-29 04:56:17,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:56:17,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075901640] [2021-10-29 04:56:17,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075901640] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:17,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1876813780] [2021-10-29 04:56:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:17,359 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:56:17,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:56:17,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:56:17,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-29 04:56:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:17,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 04:56:17,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:17,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:17,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:56:17,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 04:56:17,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 04:56:17,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,966 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-10-29 04:56:17,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 51 [2021-10-29 04:56:17,988 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 04:56:17,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-10-29 04:56:18,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-29 04:56:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:18,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:18,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:18,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:56:18,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:18,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:56:20,282 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_21 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_21 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_21))))) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_8)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_21 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_21) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_21) v_DerPreprocessor_7) v_ULTIMATE.start_main_~p~0.offset_21 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-29 04:56:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-29 04:56:20,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1876813780] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:20,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54200074] [2021-10-29 04:56:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:20,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:20,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:20,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:56:20,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 04:56:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:20,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 04:56:20,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:20,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:20,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:56:20,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:20,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-29 04:56:20,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:20,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 04:56:20,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:20,922 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-10-29 04:56:20,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-10-29 04:56:20,943 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 04:56:20,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-10-29 04:56:21,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-29 04:56:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:21,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:21,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:21,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:56:21,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:21,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:56:23,211 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_24 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_24 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_12)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_24 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_24) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_24) v_DerPreprocessor_11) v_ULTIMATE.start_main_~p~0.offset_24 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_24))))))) is different from false [2021-10-29 04:56:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-29 04:56:23,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54200074] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:23,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:56:23,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2021-10-29 04:56:23,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612671744] [2021-10-29 04:56:23,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 04:56:23,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:56:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 04:56:23,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=42, Unknown=3, NotChecked=42, Total=110 [2021-10-29 04:56:23,383 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:24,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:24,817 INFO L93 Difference]: Finished difference Result 69 states and 97 transitions. [2021-10-29 04:56:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 04:56:24,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 04:56:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:24,821 INFO L225 Difference]: With dead ends: 69 [2021-10-29 04:56:24,822 INFO L226 Difference]: Without dead ends: 60 [2021-10-29 04:56:24,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=82, Invalid=137, Unknown=3, NotChecked=84, Total=306 [2021-10-29 04:56:24,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-29 04:56:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 32. [2021-10-29 04:56:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2021-10-29 04:56:24,833 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 12 [2021-10-29 04:56:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:24,833 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2021-10-29 04:56:24,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2021-10-29 04:56:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:56:24,835 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:24,836 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:24,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:25,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-29 04:56:25,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-29 04:56:25,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:25,442 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash -893074814, now seen corresponding path program 1 times [2021-10-29 04:56:25,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:56:25,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924624915] [2021-10-29 04:56:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:25,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:56:25,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:56:25,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:56:25,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 04:56:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:25,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:56:25,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:25,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:25,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-29 04:56:25,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:25,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-29 04:56:25,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-29 04:56:25,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-29 04:56:25,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-29 04:56:25,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-29 04:56:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:26,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:26,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:26,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-29 04:56:26,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:26,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 04:56:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:26,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:56:26,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924624915] [2021-10-29 04:56:26,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924624915] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:26,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1302162325] [2021-10-29 04:56:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:26,305 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:56:26,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:56:26,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:56:26,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-29 04:56:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:26,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:56:26,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:26,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:26,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-29 04:56:26,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:26,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-29 04:56:26,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-29 04:56:26,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-29 04:56:26,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-29 04:56:26,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-29 04:56:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:26,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:26,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:26,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-29 04:56:26,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:26,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 04:56:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:27,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1302162325] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:27,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908784849] [2021-10-29 04:56:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:27,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:27,073 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:56:27,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 04:56:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:27,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:56:27,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:27,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:27,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-29 04:56:27,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:27,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-29 04:56:27,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-29 04:56:27,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-29 04:56:27,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-29 04:56:27,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-29 04:56:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:27,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:27,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:27,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-29 04:56:27,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:27,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 04:56:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:27,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908784849] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:27,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:56:27,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 7 [2021-10-29 04:56:27,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729966173] [2021-10-29 04:56:27,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:56:27,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:56:27,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:56:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:56:27,791 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:28,584 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2021-10-29 04:56:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 04:56:28,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 04:56:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:28,587 INFO L225 Difference]: With dead ends: 68 [2021-10-29 04:56:28,587 INFO L226 Difference]: Without dead ends: 59 [2021-10-29 04:56:28,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:56:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-29 04:56:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-10-29 04:56:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2021-10-29 04:56:28,600 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 15 [2021-10-29 04:56:28,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:28,601 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2021-10-29 04:56:28,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:28,602 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2021-10-29 04:56:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:56:28,603 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:28,603 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:28,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:28,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:29,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:29,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 04:56:29,218 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:29,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:29,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1000926759, now seen corresponding path program 2 times [2021-10-29 04:56:29,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:56:29,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205943295] [2021-10-29 04:56:29,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 04:56:29,219 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:56:29,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:56:29,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:56:29,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 04:56:29,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 04:56:29,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:56:29,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 04:56:29,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:29,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:56:29,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:29,703 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 04:56:29,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-29 04:56:29,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:29,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-29 04:56:29,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:29,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 04:56:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:29,762 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-29 04:56:29,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-29 04:56:29,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:29,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 04:56:29,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:29,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 04:56:30,054 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-10-29 04:56:30,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-10-29 04:56:30,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 04:56:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:30,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:30,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:30,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:56:30,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:30,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:56:32,496 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_24)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) is different from false [2021-10-29 04:56:32,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:32,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-29 04:56:32,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:32,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-10-29 04:56:35,055 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_16 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_22 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_40 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_23 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_22))))) (bvsgt v_ULTIMATE.start_main_~x~0_16 (_ bv20 32)) (bvslt v_ULTIMATE.start_main_~x~0_16 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_26)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_22 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_22) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_40) v_DerPreprocessor_25) v_ULTIMATE.start_main_~p~0.offset_40 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_23) v_DerPreprocessor_24))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) v_ULTIMATE.start_main_~x~0_16))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-29 04:56:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-10-29 04:56:35,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:56:35,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205943295] [2021-10-29 04:56:35,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205943295] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:35,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1466153385] [2021-10-29 04:56:35,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 04:56:35,780 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:56:35,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:56:35,792 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:56:35,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-29 04:56:36,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:56:36,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631482328] [2021-10-29 04:56:36,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 04:56:36,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:36,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 1 [2021-10-29 04:56:36,180 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:56:36,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-29 04:56:36,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 04:56:36,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:56:36,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-29 04:56:36,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:36,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:56:36,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:36,730 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 04:56:36,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-29 04:56:36,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:36,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-29 04:56:36,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:36,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 04:56:36,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:36,804 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-29 04:56:36,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-29 04:56:37,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:37,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-29 04:56:37,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:37,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-10-29 04:56:37,185 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-29 04:56:37,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-10-29 04:56:37,224 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-29 04:56:37,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-10-29 04:56:37,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-29 04:56:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:37,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:37,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:37,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 04:56:37,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:37,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 04:56:39,514 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_32)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_43)))))) is different from false [2021-10-29 04:56:39,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:39,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:56:39,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:39,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-29 04:56:41,856 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_29 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_27 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_44 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_20 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_27))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_34)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_27 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_27) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_44) v_DerPreprocessor_33) v_ULTIMATE.start_main_~p~0.offset_44 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_29) v_DerPreprocessor_32))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 v_ULTIMATE.start_main_~x~0_20))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_27 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_43)))))))) is different from false [2021-10-29 04:56:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-10-29 04:56:42,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631482328] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:42,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-29 04:56:42,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 16 [2021-10-29 04:56:42,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366771002] [2021-10-29 04:56:42,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-29 04:56:42,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:56:42,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-29 04:56:42,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=99, Unknown=4, NotChecked=92, Total=240 [2021-10-29 04:56:42,251 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:44,689 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_24)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (not (bvslt .cse1 (_ bv10 32))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse1 (_ bv20 32))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_32)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_43)))))) (exists ((v_arrayElimCell_32 (_ BitVec 1))) (let ((.cse3 (bvneg v_arrayElimCell_32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse3)) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse3 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))))) is different from false [2021-10-29 04:56:46,762 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_24)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_32)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_43)))))) (exists ((v_arrayElimCell_32 (_ BitVec 1))) (let ((.cse2 (bvneg v_arrayElimCell_32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse2)) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse2 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))))))) is different from false [2021-10-29 04:56:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:47,759 INFO L93 Difference]: Finished difference Result 144 states and 206 transitions. [2021-10-29 04:56:47,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-29 04:56:47,760 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 04:56:47,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:47,762 INFO L225 Difference]: With dead ends: 144 [2021-10-29 04:56:47,762 INFO L226 Difference]: Without dead ends: 127 [2021-10-29 04:56:47,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=129, Invalid=269, Unknown=6, NotChecked=246, Total=650 [2021-10-29 04:56:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-29 04:56:47,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2021-10-29 04:56:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 74 states have internal predecessors, (108), 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) [2021-10-29 04:56:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 108 transitions. [2021-10-29 04:56:47,784 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 108 transitions. Word has length 15 [2021-10-29 04:56:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:47,784 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 108 transitions. [2021-10-29 04:56:47,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 108 transitions. [2021-10-29 04:56:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 04:56:47,786 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:47,786 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:47,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:48,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:48,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:48,193 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:48,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash -128474150, now seen corresponding path program 1 times [2021-10-29 04:56:48,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:56:48,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106212375] [2021-10-29 04:56:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:48,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:56:48,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:56:48,197 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:56:48,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 04:56:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:48,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:56:48,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:48,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:48,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-29 04:56:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 04:56:48,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 04:56:48,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:56:48,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106212375] [2021-10-29 04:56:48,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106212375] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:48,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:48,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 04:56:48,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045820314] [2021-10-29 04:56:48,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:56:48,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:56:48,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:56:48,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:56:48,583 INFO L87 Difference]: Start difference. First operand 75 states and 108 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:49,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:49,160 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2021-10-29 04:56:49,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 04:56:49,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-29 04:56:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:49,162 INFO L225 Difference]: With dead ends: 87 [2021-10-29 04:56:49,162 INFO L226 Difference]: Without dead ends: 77 [2021-10-29 04:56:49,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-29 04:56:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-29 04:56:49,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-10-29 04:56:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 74 states have internal predecessors, (106), 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) [2021-10-29 04:56:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 106 transitions. [2021-10-29 04:56:49,174 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 106 transitions. Word has length 17 [2021-10-29 04:56:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:49,175 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 106 transitions. [2021-10-29 04:56:49,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:49,175 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 106 transitions. [2021-10-29 04:56:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 04:56:49,176 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:49,177 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:49,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:49,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:56:49,381 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:49,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:49,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1524987734, now seen corresponding path program 1 times [2021-10-29 04:56:49,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:56:49,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307208458] [2021-10-29 04:56:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:49,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:56:49,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:56:49,384 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:56:49,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-29 04:56:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:49,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 04:56:49,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:49,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:56:49,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:49,831 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 04:56:49,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-29 04:56:49,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:49,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-29 04:56:49,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:49,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 04:56:49,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:49,877 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-29 04:56:49,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-29 04:56:49,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:49,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 04:56:49,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:49,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 04:56:50,131 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-10-29 04:56:50,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-10-29 04:56:50,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 04:56:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:56:50,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:50,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:50,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:56:50,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:50,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:56:52,494 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_40)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-29 04:56:52,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:52,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 04:56:52,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:52,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-29 04:56:54,965 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_26 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_33 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_42 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_41 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_36 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_52 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_26 (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_33)))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_42)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_33 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_33) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_52) v_DerPreprocessor_41) v_ULTIMATE.start_main_~p~0.offset_52 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_36) v_DerPreprocessor_40))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) v_ULTIMATE.start_main_~x~0_26))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt v_ULTIMATE.start_main_~x~0_26 (_ bv20 32)))) is different from false [2021-10-29 04:56:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-10-29 04:56:55,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:56:55,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307208458] [2021-10-29 04:56:55,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307208458] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:55,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1610030815] [2021-10-29 04:56:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:55,591 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:56:55,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:56:55,605 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:56:55,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-29 04:56:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:56,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 04:56:56,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:56,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:56:56,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:56:56,199 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 04:56:56,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-29 04:56:56,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:56,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-29 04:56:56,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:56,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 04:56:56,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:56,274 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-29 04:56:56,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-29 04:56:56,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:56,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 04:56:56,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:56,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 04:56:56,524 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-10-29 04:56:56,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-10-29 04:56:56,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 04:56:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:56:56,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:56,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:56,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:56:56,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:56,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:56:58,839 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_48)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-29 04:56:59,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:59,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 04:56:59,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:59,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-29 04:57:01,471 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_50 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_42 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_38 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_31 (_ BitVec 32))) (or (bvsgt v_ULTIMATE.start_main_~x~0_31 (_ bv20 32)) (bvslt v_ULTIMATE.start_main_~x~0_31 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_50)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_38 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_38) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_56) v_DerPreprocessor_49) v_ULTIMATE.start_main_~p~0.offset_56 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_42) v_DerPreprocessor_48))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) v_ULTIMATE.start_main_~x~0_31))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_38)))))))) is different from false [2021-10-29 04:57:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-10-29 04:57:02,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1610030815] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:02,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291903285] [2021-10-29 04:57:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:02,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:02,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:02,109 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:57:02,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-29 04:57:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:02,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-29 04:57:02,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:02,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:57:02,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:57:02,613 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 04:57:02,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-29 04:57:02,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:02,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-29 04:57:02,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:02,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 04:57:02,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:02,678 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-29 04:57:02,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-29 04:57:02,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:02,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-29 04:57:02,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:02,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:03,116 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-29 04:57:03,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 70 [2021-10-29 04:57:03,156 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-29 04:57:03,156 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 42 treesize of output 44 [2021-10-29 04:57:03,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-29 04:57:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:57:03,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:03,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:03,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 04:57:03,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:03,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 04:57:05,392 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_56)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_59)))))) is different from false [2021-10-29 04:57:05,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:05,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-29 04:57:05,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:05,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-29 04:57:07,766 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_43 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_36 (_ BitVec 32)) (v_DerPreprocessor_57 (_ BitVec 32)) (v_DerPreprocessor_58 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_60 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_48 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_43 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_59)))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_43)))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_58)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_43 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_60) v_DerPreprocessor_57) v_ULTIMATE.start_main_~p~0.offset_60 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_48) v_DerPreprocessor_56))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 v_ULTIMATE.start_main_~x~0_36))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-29 04:57:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-10-29 04:57:08,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291903285] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:08,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:57:08,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 18 [2021-10-29 04:57:08,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874269338] [2021-10-29 04:57:08,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-29 04:57:08,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-29 04:57:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=101, Unknown=6, NotChecked=150, Total=306 [2021-10-29 04:57:08,200 INFO L87 Difference]: Start difference. First operand 75 states and 106 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:10,711 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (exists ((v_arrayElimCell_51 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_51))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_40)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (not (bvslt .cse2 (_ bv10 32))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_48)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvsge (select (select (let ((.cse4 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_56)))) (store .cse4 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse4 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_59)))))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse2 (_ bv20 32))))) is different from false [2021-10-29 04:57:12,787 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (exists ((v_arrayElimCell_51 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_51))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_40)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_48)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_56)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_59))))))) is different from false [2021-10-29 04:57:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:13,556 INFO L93 Difference]: Finished difference Result 155 states and 217 transitions. [2021-10-29 04:57:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-29 04:57:13,558 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-29 04:57:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:13,559 INFO L225 Difference]: With dead ends: 155 [2021-10-29 04:57:13,560 INFO L226 Difference]: Without dead ends: 146 [2021-10-29 04:57:13,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=133, Invalid=271, Unknown=8, NotChecked=344, Total=756 [2021-10-29 04:57:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-29 04:57:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 73. [2021-10-29 04:57:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 72 states have internal predecessors, (102), 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) [2021-10-29 04:57:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 102 transitions. [2021-10-29 04:57:13,575 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 102 transitions. Word has length 17 [2021-10-29 04:57:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:13,576 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 102 transitions. [2021-10-29 04:57:13,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 102 transitions. [2021-10-29 04:57:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 04:57:13,578 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:13,578 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:13,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:13,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:13,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:14,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 04:57:14,193 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:57:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:14,194 INFO L85 PathProgramCache]: Analyzing trace with hash -668283619, now seen corresponding path program 1 times [2021-10-29 04:57:14,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:14,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175583889] [2021-10-29 04:57:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:14,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:14,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:14,196 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:14,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-29 04:57:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:14,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 04:57:14,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:14,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:57:14,796 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-10-29 04:57:14,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 93 [2021-10-29 04:57:14,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2021-10-29 04:57:14,860 INFO L354 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2021-10-29 04:57:14,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 83 [2021-10-29 04:57:14,878 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-10-29 04:57:14,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 104 [2021-10-29 04:57:15,364 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-10-29 04:57:15,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 110 [2021-10-29 04:57:15,402 INFO L354 Elim1Store]: treesize reduction 87, result has 17.9 percent of original size [2021-10-29 04:57:15,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 104 [2021-10-29 04:57:15,462 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-29 04:57:15,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 84 [2021-10-29 04:57:15,522 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-10-29 04:57:15,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 66 [2021-10-29 04:57:15,532 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-29 04:57:15,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 32 [2021-10-29 04:57:15,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 04:57:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:15,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:15,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:15,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 04:57:15,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:15,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-29 04:57:16,151 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:16,152 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 351 treesize of output 350 [2021-10-29 04:57:16,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:16,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 540 [2021-10-29 04:57:19,434 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-10-29 04:57:19,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 540 treesize of output 358 [2021-10-29 04:57:19,582 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:19,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 350 treesize of output 356 [2021-10-29 04:57:19,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:19,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 546 [2021-10-29 04:57:22,127 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-10-29 04:57:22,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 546 treesize of output 364 [2021-10-29 04:57:22,194 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:22,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 356 treesize of output 362 [2021-10-29 04:57:22,217 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 04:57:22,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:22,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:22,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:23,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:23,266 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:23,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2021-10-29 04:57:23,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:23,802 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:23,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2021-10-29 04:57:23,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:26,051 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-10-29 04:57:26,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:26,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:30,846 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:30,847 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 110 treesize of output 122 [2021-10-29 04:57:31,934 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:31,934 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 147 treesize of output 167 [2021-10-29 04:57:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:34,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:34,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175583889] [2021-10-29 04:57:34,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175583889] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:34,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1773069707] [2021-10-29 04:57:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:34,921 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:57:34,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:57:34,922 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:57:34,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-29 04:57:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:35,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 04:57:35,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:35,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:57:35,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 04:57:35,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:35,666 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-29 04:57:35,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 89 [2021-10-29 04:57:35,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 04:57:35,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:35,689 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-29 04:57:35,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 67 [2021-10-29 04:57:35,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 78 [2021-10-29 04:57:35,707 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-10-29 04:57:35,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 85 [2021-10-29 04:57:36,231 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-29 04:57:36,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 100 [2021-10-29 04:57:36,260 INFO L354 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2021-10-29 04:57:36,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 81 [2021-10-29 04:57:36,268 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 04:57:36,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2021-10-29 04:57:36,319 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 04:57:36,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 51 [2021-10-29 04:57:36,325 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 04:57:36,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2021-10-29 04:57:36,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 04:57:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:36,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:36,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:36,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 04:57:36,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:36,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-29 04:57:36,756 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:36,757 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 654 treesize of output 623 [2021-10-29 04:57:36,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:36,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1049 [2021-10-29 04:57:36,992 INFO L354 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2021-10-29 04:57:36,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1049 treesize of output 622 [2021-10-29 04:57:37,145 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:37,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 614 treesize of output 604 [2021-10-29 04:57:37,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:37,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1030 [2021-10-29 04:57:37,392 INFO L354 Elim1Store]: treesize reduction 51, result has 48.5 percent of original size [2021-10-29 04:57:37,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1030 treesize of output 612 [2021-10-29 04:57:37,503 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:37,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 604 treesize of output 594 [2021-10-29 04:57:37,530 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 04:57:38,097 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:38,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2021-10-29 04:57:38,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:38,601 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:38,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-10-29 04:57:38,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:39,567 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:39,567 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 541 treesize of output 525 [2021-10-29 04:57:39,629 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:39,632 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 655 treesize of output 643 [2021-10-29 04:57:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:44,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1773069707] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:44,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369327213] [2021-10-29 04:57:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:44,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:44,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:44,322 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:57:44,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-29 04:57:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:44,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-29 04:57:44,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:44,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:57:44,935 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-10-29 04:57:44,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 94 [2021-10-29 04:57:44,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 117 [2021-10-29 04:57:44,998 INFO L354 Elim1Store]: treesize reduction 150, result has 14.3 percent of original size [2021-10-29 04:57:44,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 90 [2021-10-29 04:57:45,014 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-10-29 04:57:45,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 105 [2021-10-29 04:57:45,601 INFO L354 Elim1Store]: treesize reduction 71, result has 17.4 percent of original size [2021-10-29 04:57:45,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 105 [2021-10-29 04:57:45,646 INFO L354 Elim1Store]: treesize reduction 65, result has 16.7 percent of original size [2021-10-29 04:57:45,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 83 [2021-10-29 04:57:45,688 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-10-29 04:57:45,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 72 [2021-10-29 04:57:45,762 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-29 04:57:45,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 58 [2021-10-29 04:57:45,773 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-29 04:57:45,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2021-10-29 04:57:45,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 04:57:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:45,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:45,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:45,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 04:57:45,884 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:45,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-29 04:57:46,257 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,257 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 349 treesize of output 348 [2021-10-29 04:57:46,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 538 [2021-10-29 04:57:50,146 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-10-29 04:57:50,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 538 treesize of output 356 [2021-10-29 04:57:50,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:50,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 538 [2021-10-29 04:57:52,197 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-10-29 04:57:52,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 538 treesize of output 356 [2021-10-29 04:57:52,261 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 348 treesize of output 354 [2021-10-29 04:57:52,326 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 354 treesize of output 360 [2021-10-29 04:57:52,349 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 04:57:52,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:52,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:52,943 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2021-10-29 04:57:53,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:53,520 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:53,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2021-10-29 04:57:53,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:57:55,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-29 04:58:07,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:07,099 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 192 treesize of output 196 [2021-10-29 04:58:08,571 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:08,571 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 219 treesize of output 227 [2021-10-29 04:58:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:58:11,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369327213] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:58:11,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:58:11,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 8, 7, 8] total 19 [2021-10-29 04:58:11,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732156947] [2021-10-29 04:58:11,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-29 04:58:11,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:58:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-29 04:58:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=281, Unknown=2, NotChecked=0, Total=342 [2021-10-29 04:58:11,589 INFO L87 Difference]: Start difference. First operand 73 states and 102 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 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) [2021-10-29 04:58:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:58:15,131 INFO L93 Difference]: Finished difference Result 133 states and 185 transitions. [2021-10-29 04:58:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 04:58:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 04:58:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:58:15,134 INFO L225 Difference]: With dead ends: 133 [2021-10-29 04:58:15,134 INFO L226 Difference]: Without dead ends: 115 [2021-10-29 04:58:15,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=122, Invalid=578, Unknown=2, NotChecked=0, Total=702 [2021-10-29 04:58:15,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-29 04:58:15,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2021-10-29 04:58:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4) internal successors, (126), 90 states have internal predecessors, (126), 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) [2021-10-29 04:58:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 126 transitions. [2021-10-29 04:58:15,152 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 126 transitions. Word has length 18 [2021-10-29 04:58:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:58:15,153 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 126 transitions. [2021-10-29 04:58:15,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 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) [2021-10-29 04:58:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 126 transitions. [2021-10-29 04:58:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 04:58:15,155 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:58:15,155 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:58:15,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:15,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:15,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:15,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 04:58:15,769 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:58:15,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:58:15,770 INFO L85 PathProgramCache]: Analyzing trace with hash -776135564, now seen corresponding path program 3 times [2021-10-29 04:58:15,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:58:15,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259956813] [2021-10-29 04:58:15,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:58:15,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:58:15,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:58:15,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:58:15,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-29 04:58:16,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-29 04:58:16,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:58:16,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-29 04:58:16,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:16,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:58:16,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:58:16,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:16,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-29 04:58:16,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:16,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 04:58:16,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:58:16,641 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-10-29 04:58:16,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-10-29 04:58:16,746 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 04:58:16,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-29 04:58:16,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:16,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 04:58:16,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:16,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-29 04:58:17,115 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-29 04:58:17,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 75 [2021-10-29 04:58:17,148 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-29 04:58:17,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-10-29 04:58:17,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:17,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 04:58:17,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:17,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 04:58:17,406 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-10-29 04:58:17,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-10-29 04:58:17,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 04:58:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:58:17,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:58:17,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:17,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:58:17,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:17,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:58:19,774 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_78)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) is different from false [2021-10-29 04:58:19,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:19,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-29 04:58:19,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:19,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-10-29 04:58:22,216 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_80 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_79 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_46 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_64 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_58 (_ BitVec 32)) (v_DerPreprocessor_79 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_46 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_80)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_58 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_58) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_79) v_DerPreprocessor_79) v_ULTIMATE.start_main_~p~0.offset_79 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_64) v_DerPreprocessor_78))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) v_ULTIMATE.start_main_~x~0_46))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt v_ULTIMATE.start_main_~x~0_46 (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_58))))))) is different from false [2021-10-29 04:58:22,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:22,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-29 04:58:22,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:22,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-29 04:58:25,723 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_79 (_ BitVec 32)) (v_DerPreprocessor_82 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_48 (_ BitVec 32)) (v_DerPreprocessor_80 (_ BitVec 32)) (v_DerPreprocessor_81 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_46 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_80 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_64 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_58 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_59 (_ BitVec 32)) (v_DerPreprocessor_79 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_66 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_46 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_82)))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_59 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_80) v_DerPreprocessor_81) v_ULTIMATE.start_main_~p~0.offset_80 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_66) v_DerPreprocessor_80))))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_58 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_58) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_79) v_DerPreprocessor_79) v_ULTIMATE.start_main_~p~0.offset_79 v_ULTIMATE.start_main_~x~0_48) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_64) v_DerPreprocessor_78))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) v_ULTIMATE.start_main_~x~0_46))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_59 (_ bv1 1)) v_ULTIMATE.start_main_~tail~0.base_58)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_59)))))) (bvsgt v_ULTIMATE.start_main_~x~0_46 (_ bv20 32)))) is different from false [2021-10-29 04:58:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-10-29 04:58:27,548 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:58:27,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259956813] [2021-10-29 04:58:27,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259956813] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:58:27,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1759582080] [2021-10-29 04:58:27,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:58:27,549 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:58:27,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:58:27,555 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:58:27,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-29 04:58:28,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:58:28,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579579209] [2021-10-29 04:58:28,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:58:28,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:58:28,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:58:28,344 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:58:28,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 1 [2021-10-29 04:58:28,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-29 04:58:29,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-29 04:58:29,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:58:29,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-29 04:58:29,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:29,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:58:30,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:58:30,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:30,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-29 04:58:30,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:30,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 04:58:30,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:58:30,354 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-10-29 04:58:30,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-10-29 04:58:30,431 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 04:58:30,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-29 04:58:30,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:30,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-29 04:58:30,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:30,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 04:58:30,745 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-29 04:58:30,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 82 [2021-10-29 04:58:30,831 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-10-29 04:58:30,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 71 [2021-10-29 04:58:31,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:31,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-29 04:58:31,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:31,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-29 04:58:31,484 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-29 04:58:31,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 109 [2021-10-29 04:58:31,541 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-29 04:58:31,541 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 81 treesize of output 85 [2021-10-29 04:58:31,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-29 04:58:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:58:31,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:58:31,734 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:31,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:58:31,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:31,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:58:33,802 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_83))))) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_90)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-29 04:58:33,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:33,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:58:33,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:33,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-29 04:58:36,295 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_84 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_52 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_65 (_ BitVec 32)) (v_DerPreprocessor_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (v_DerPreprocessor_92 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_73 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_92)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_65 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_65) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_84) v_DerPreprocessor_91) v_ULTIMATE.start_main_~p~0.offset_84 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_73) v_DerPreprocessor_90))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 v_ULTIMATE.start_main_~x~0_52))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_65))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_65 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_83)))))))) is different from false [2021-10-29 04:58:36,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:36,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-10-29 04:58:36,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:58:36,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-10-29 04:58:39,573 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_84 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_52 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_54 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_85 (_ BitVec 32)) (v_DerPreprocessor_93 (_ BitVec 32)) (v_DerPreprocessor_94 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_65 (_ BitVec 32)) (v_DerPreprocessor_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_66 (_ BitVec 32)) (v_DerPreprocessor_92 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_75 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_73 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32))) (let ((.cse3 (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_66 (_ bv1 1)))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_94)))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_66 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_66) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_85) v_DerPreprocessor_93) v_ULTIMATE.start_main_~p~0.offset_85 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_75) v_DerPreprocessor_92))))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_65 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_65) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_84) v_DerPreprocessor_91) v_ULTIMATE.start_main_~p~0.offset_84 v_ULTIMATE.start_main_~x~0_54) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_73) v_DerPreprocessor_90))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 v_ULTIMATE.start_main_~x~0_52))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse3 v_ULTIMATE.start_main_~tail~0.base_65)))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_66)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse3 v_ULTIMATE.start_main_~tail~0.base_65 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_83))))))))))) is different from false [2021-10-29 04:58:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-10-29 04:58:41,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579579209] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:58:41,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-29 04:58:41,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 19 [2021-10-29 04:58:41,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937943064] [2021-10-29 04:58:41,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-29 04:58:41,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:58:41,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-29 04:58:41,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=118, Unknown=6, NotChecked=162, Total=342 [2021-10-29 04:58:41,455 INFO L87 Difference]: Start difference. First operand 91 states and 126 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:58:48,925 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_78)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_83))))) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_90)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (not (bvslt .cse2 (_ bv10 32))) (exists ((v_arrayElimCell_180 (_ BitVec 1)) (v_ULTIMATE.start_main_~tail~0.base_62 (_ BitVec 32))) (let ((.cse3 (bvneg v_arrayElimCell_180))) (and (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg .cse3)))) (= (_ bv0 1) (bvadd (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_62) .cse3))))) (exists ((v_arrayElimCell_181 (_ BitVec 1)) (v_arrayElimCell_168 (_ BitVec 1))) (let ((.cse5 (bvneg (bvneg (bvneg v_arrayElimCell_168)))) (.cse4 (bvneg v_arrayElimCell_181))) (and (= (_ bv0 1) (bvadd .cse4 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (= (_ bv0 1) (bvadd .cse5 (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg .cse5) (bvneg (bvneg .cse4))))))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse2 (_ bv20 32))))) is different from false [2021-10-29 04:58:51,037 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_78)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_83))))) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_90)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (exists ((v_arrayElimCell_180 (_ BitVec 1)) (v_ULTIMATE.start_main_~tail~0.base_62 (_ BitVec 32))) (let ((.cse2 (bvneg v_arrayElimCell_180))) (and (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg .cse2)))) (= (_ bv0 1) (bvadd (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_62) .cse2))))) (exists ((v_arrayElimCell_181 (_ BitVec 1)) (v_arrayElimCell_168 (_ BitVec 1))) (let ((.cse4 (bvneg (bvneg (bvneg v_arrayElimCell_168)))) (.cse3 (bvneg v_arrayElimCell_181))) (and (= (_ bv0 1) (bvadd .cse3 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (= (_ bv0 1) (bvadd .cse4 (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg .cse4) (bvneg (bvneg .cse3)))))))) is different from false [2021-10-29 04:58:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:58:53,245 INFO L93 Difference]: Finished difference Result 192 states and 269 transitions. [2021-10-29 04:58:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 04:58:53,247 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 04:58:53,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:58:53,249 INFO L225 Difference]: With dead ends: 192 [2021-10-29 04:58:53,249 INFO L226 Difference]: Without dead ends: 183 [2021-10-29 04:58:53,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=237, Invalid=488, Unknown=9, NotChecked=456, Total=1190 [2021-10-29 04:58:53,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-29 04:58:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 96. [2021-10-29 04:58:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 95 states have internal predecessors, (135), 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) [2021-10-29 04:58:53,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2021-10-29 04:58:53,268 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 18 [2021-10-29 04:58:53,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:58:53,269 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2021-10-29 04:58:53,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:58:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2021-10-29 04:58:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 04:58:53,271 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:58:53,271 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:58:53,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-29 04:58:53,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:53,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:58:53,681 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:58:53,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:58:53,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1147499445, now seen corresponding path program 1 times [2021-10-29 04:58:53,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:58:53,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242374031] [2021-10-29 04:58:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:58:53,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:58:53,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:58:53,684 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:58:53,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-29 04:58:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:58:54,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-29 04:58:54,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:54,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 20 [2021-10-29 04:58:55,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-29 04:58:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:58:55,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:58:57,581 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-29 04:58:57,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2021-10-29 04:58:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:58:57,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:58:57,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242374031] [2021-10-29 04:58:57,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242374031] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:58:57,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [569440508] [2021-10-29 04:58:57,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:58:57,651 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:58:57,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:58:57,652 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:58:57,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-10-29 04:58:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:58:58,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 04:58:58,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:58:59,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 20 [2021-10-29 04:59:01,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-29 04:59:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:59:01,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:59:01,596 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-29 04:59:01,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2021-10-29 04:59:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:59:01,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [569440508] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:59:01,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536841344] [2021-10-29 04:59:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:59:01,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:59:01,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:59:01,660 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:59:01,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-29 04:59:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:59:02,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-29 04:59:02,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:59:02,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 20 [2021-10-29 04:59:03,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-29 04:59:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:59:03,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:59:03,737 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-29 04:59:03,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2021-10-29 04:59:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:59:03,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536841344] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:59:03,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:59:03,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11, 9, 10, 9] total 23 [2021-10-29 04:59:03,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322192918] [2021-10-29 04:59:03,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-29 04:59:03,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:59:03,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-29 04:59:03,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-10-29 04:59:03,802 INFO L87 Difference]: Start difference. First operand 96 states and 135 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 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) [2021-10-29 04:59:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:59:14,969 INFO L93 Difference]: Finished difference Result 195 states and 270 transitions. [2021-10-29 04:59:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-29 04:59:14,977 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 04:59:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:59:14,978 INFO L225 Difference]: With dead ends: 195 [2021-10-29 04:59:14,979 INFO L226 Difference]: Without dead ends: 178 [2021-10-29 04:59:14,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2021-10-29 04:59:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-29 04:59:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 113. [2021-10-29 04:59:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 112 states have internal predecessors, (162), 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) [2021-10-29 04:59:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 162 transitions. [2021-10-29 04:59:15,004 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 162 transitions. Word has length 20 [2021-10-29 04:59:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:59:15,005 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 162 transitions. [2021-10-29 04:59:15,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 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) [2021-10-29 04:59:15,006 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 162 transitions. [2021-10-29 04:59:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 04:59:15,007 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:59:15,008 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:59:15,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-29 04:59:15,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-10-29 04:59:15,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-29 04:59:15,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:59:15,617 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:59:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:59:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1494005967, now seen corresponding path program 2 times [2021-10-29 04:59:15,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:59:15,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969218378] [2021-10-29 04:59:15,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 04:59:15,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:59:15,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:59:15,619 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:59:15,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-29 04:59:16,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 04:59:16,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:59:16,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-29 04:59:16,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:59:16,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:59:16,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:59:16,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:16,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-29 04:59:16,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:16,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 04:59:16,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:59:16,724 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-10-29 04:59:16,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-10-29 04:59:16,799 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 04:59:16,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-29 04:59:16,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:16,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-29 04:59:16,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:16,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-29 04:59:17,207 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-29 04:59:17,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 81 [2021-10-29 04:59:17,255 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-29 04:59:17,255 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 53 treesize of output 55 [2021-10-29 04:59:17,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:17,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-29 04:59:17,559 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-10-29 04:59:17,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2021-10-29 04:59:17,692 INFO L354 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2021-10-29 04:59:17,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-10-29 04:59:17,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 04:59:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:59:17,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:59:18,041 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:18,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:59:18,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:18,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 04:59:20,093 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_101)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-29 04:59:20,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:20,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 04:59:20,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:20,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-29 04:59:22,573 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~tail~0.offset_82 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (v_DerPreprocessor_102 (_ BitVec 32)) (v_DerPreprocessor_103 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_98 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_72 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_59 (_ bv10 32)) (bvsgt v_ULTIMATE.start_main_~x~0_59 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_103)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_72 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_72) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_98) v_DerPreprocessor_102) v_ULTIMATE.start_main_~p~0.offset_98 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_82) v_DerPreprocessor_101))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) v_ULTIMATE.start_main_~x~0_59))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_72)))))))) is different from false [2021-10-29 04:59:23,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:23,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-29 04:59:23,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:23,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-29 04:59:26,307 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_100 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (v_DerPreprocessor_102 (_ BitVec 32)) (v_DerPreprocessor_103 (_ BitVec 32)) (v_DerPreprocessor_104 (_ BitVec 32)) (v_DerPreprocessor_105 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_61 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_99 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_98 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_82 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_59 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_84 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_72 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_73 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_59 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_105)))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_73 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_73) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_99) v_DerPreprocessor_104) v_ULTIMATE.start_main_~p~0.offset_99 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_84) v_DerPreprocessor_103))))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_72 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_72) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_98) v_DerPreprocessor_102) v_ULTIMATE.start_main_~p~0.offset_98 v_ULTIMATE.start_main_~x~0_61) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_82) v_DerPreprocessor_101))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) v_ULTIMATE.start_main_~x~0_59))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_73 (_ bv1 1)) v_ULTIMATE.start_main_~tail~0.base_72))))))) (bvsgt v_ULTIMATE.start_main_~x~0_59 (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_73))))))) is different from false [2021-10-29 04:59:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-10-29 04:59:28,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:59:28,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969218378] [2021-10-29 04:59:28,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969218378] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:59:28,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [743029763] [2021-10-29 04:59:28,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 04:59:28,162 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:59:28,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:59:28,163 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:59:28,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-29 04:59:28,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:59:28,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795441277] [2021-10-29 04:59:28,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 04:59:28,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:59:28,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:59:28,945 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:59:28,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 1 [2021-10-29 04:59:28,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-29 04:59:29,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 04:59:29,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:59:29,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-29 04:59:29,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:59:29,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:59:29,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:59:29,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:29,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-29 04:59:29,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:29,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 04:59:29,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:59:29,959 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-10-29 04:59:29,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-10-29 04:59:30,021 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 04:59:30,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-29 04:59:30,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:30,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-29 04:59:30,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:30,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 04:59:30,305 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-29 04:59:30,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 86 [2021-10-29 04:59:30,368 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-10-29 04:59:30,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 75 [2021-10-29 04:59:30,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:30,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-29 04:59:30,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:30,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-29 04:59:31,083 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-29 04:59:31,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 108 [2021-10-29 04:59:31,135 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-29 04:59:31,136 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 80 treesize of output 84 [2021-10-29 04:59:31,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-29 04:59:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 04:59:31,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:59:31,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:31,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 04:59:31,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:31,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 04:59:33,364 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_112 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_113)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_102)))))) is different from false [2021-10-29 04:59:33,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:33,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 04:59:33,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:33,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-29 04:59:35,780 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_103 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (v_DerPreprocessor_114 (_ BitVec 32)) (v_DerPreprocessor_115 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_66 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_79 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_79 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_102))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_79)))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_115)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_79 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_79) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_103) v_DerPreprocessor_114) v_ULTIMATE.start_main_~p~0.offset_103 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_91) v_DerPreprocessor_113))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 v_ULTIMATE.start_main_~x~0_66))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-29 04:59:36,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:36,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-10-29 04:59:36,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:36,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-10-29 04:59:39,029 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_104 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_103 (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (v_DerPreprocessor_114 (_ BitVec 32)) (v_DerPreprocessor_115 (_ BitVec 32)) (v_DerPreprocessor_116 (_ BitVec 32)) (v_DerPreprocessor_117 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_66 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_93 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_68 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_79 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_80 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_80 (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 v_ULTIMATE.start_main_~tail~0.base_79)))))) (bvsge (select (select (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_117)))) (store .cse3 v_ULTIMATE.start_main_~tail~0.base_80 (store (store (store (select .cse3 v_ULTIMATE.start_main_~tail~0.base_80) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_104) v_DerPreprocessor_116) v_ULTIMATE.start_main_~p~0.offset_104 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_93) v_DerPreprocessor_115))))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_79 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_79) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_103) v_DerPreprocessor_114) v_ULTIMATE.start_main_~p~0.offset_103 v_ULTIMATE.start_main_~x~0_68) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_91) v_DerPreprocessor_113))))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 v_ULTIMATE.start_main_~x~0_66))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_80)))) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 v_ULTIMATE.start_main_~tail~0.base_79 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_102)))))))) is different from false [2021-10-29 04:59:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-10-29 04:59:40,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795441277] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:59:40,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-29 04:59:40,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 19 [2021-10-29 04:59:40,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848054161] [2021-10-29 04:59:40,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-29 04:59:40,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:59:40,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-29 04:59:40,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=118, Unknown=6, NotChecked=162, Total=342 [2021-10-29 04:59:40,588 INFO L87 Difference]: Start difference. First operand 113 states and 162 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:59:50,504 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (exists ((v_arrayElimCell_202 (_ BitVec 1)) (v_arrayElimCell_217 (_ BitVec 1))) (let ((.cse0 (bvneg (bvneg (bvneg (bvneg v_arrayElimCell_202))))) (.cse1 (bvneg v_arrayElimCell_217))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (bvneg (bvneg .cse1)))) (= (_ bv0 1) (bvadd .cse1 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (bvslt .cse2 (_ bv10 32))) (exists ((v_ULTIMATE.start_main_~tail~0.base_76 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_76))))) (_ bv1 1))) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_76)) (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_76)))) (forall ((v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_101)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse2 (_ bv20 32))) (forall ((v_DerPreprocessor_112 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse4 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_113)))) (store .cse4 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse4 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_102)))))))) is different from false [2021-10-29 04:59:52,617 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (exists ((v_arrayElimCell_202 (_ BitVec 1)) (v_arrayElimCell_217 (_ BitVec 1))) (let ((.cse0 (bvneg (bvneg (bvneg (bvneg v_arrayElimCell_202))))) (.cse1 (bvneg v_arrayElimCell_217))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (bvneg (bvneg .cse1)))) (= (_ bv0 1) (bvadd .cse1 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (exists ((v_ULTIMATE.start_main_~tail~0.base_76 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_76))))) (_ bv1 1))) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_76)) (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_76)))) (forall ((v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_101)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((v_DerPreprocessor_112 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_113)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_102))))))) is different from false [2021-10-29 04:59:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:59:54,655 INFO L93 Difference]: Finished difference Result 236 states and 334 transitions. [2021-10-29 04:59:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-29 04:59:54,656 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 04:59:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:59:54,658 INFO L225 Difference]: With dead ends: 236 [2021-10-29 04:59:54,658 INFO L226 Difference]: Without dead ends: 204 [2021-10-29 04:59:54,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=237, Invalid=488, Unknown=9, NotChecked=456, Total=1190 [2021-10-29 04:59:54,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-29 04:59:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 105. [2021-10-29 04:59:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:59:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-10-29 04:59:54,675 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 148 transitions. Word has length 20 [2021-10-29 04:59:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:59:54,676 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-10-29 04:59:54,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:59:54,677 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 148 transitions. [2021-10-29 04:59:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 04:59:54,678 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:59:54,678 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:59:54,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-29 04:59:54,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-10-29 04:59:55,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:59:55,098 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:59:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:59:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 232192162, now seen corresponding path program 2 times [2021-10-29 04:59:55,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:59:55,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096491785] [2021-10-29 04:59:55,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 04:59:55,099 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:59:55,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:59:55,117 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:59:55,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-29 04:59:55,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 04:59:55,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:59:55,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-29 04:59:55,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:59:55,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 04:59:55,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 04:59:55,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:59:55,996 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-29 04:59:55,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 19 [2021-10-29 04:59:56,045 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 04:59:56,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-29 04:59:56,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-29 04:59:56,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:59:56,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-10-29 04:59:57,466 INFO L354 Elim1Store]: treesize reduction 307, result has 10.0 percent of original size [2021-10-29 04:59:57,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 371 treesize of output 241 [2021-10-29 04:59:57,777 INFO L354 Elim1Store]: treesize reduction 323, result has 9.0 percent of original size [2021-10-29 04:59:57,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 463 treesize of output 317 [2021-10-29 04:59:57,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:57,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 343 [2021-10-29 04:59:57,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:57,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 350 [2021-10-29 04:59:57,926 INFO L354 Elim1Store]: treesize reduction 955, result has 8.3 percent of original size [2021-10-29 04:59:57,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 350 treesize of output 302 [2021-10-29 04:59:57,967 INFO L354 Elim1Store]: treesize reduction 22, result has 69.9 percent of original size [2021-10-29 04:59:57,968 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 206 treesize of output 226 [2021-10-29 04:59:57,969 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 04:59:58,846 INFO L354 Elim1Store]: treesize reduction 71, result has 17.4 percent of original size [2021-10-29 04:59:58,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 201 treesize of output 184 [2021-10-29 04:59:58,922 INFO L354 Elim1Store]: treesize reduction 122, result has 14.7 percent of original size [2021-10-29 04:59:58,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 184 treesize of output 125 [2021-10-29 04:59:58,987 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-10-29 04:59:58,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 169 treesize of output 130 [2021-10-29 04:59:59,153 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-10-29 04:59:59,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 97 [2021-10-29 04:59:59,172 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-29 04:59:59,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 48 [2021-10-29 04:59:59,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 04:59:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:59:59,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:59:59,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:59,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 04:59:59,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:59,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-29 04:59:59,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:59,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-10-29 04:59:59,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:59,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-29 04:59:59,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:59,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-10-29 04:59:59,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:59:59,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-10-29 05:00:02,071 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_121 (_ BitVec 32)) (v_DerPreprocessor_122 (_ BitVec 32)) (v_DerPreprocessor_123 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_124 (_ BitVec 32)) (v_DerPreprocessor_125 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_109 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_109 (_ BitVec 32)) (v_DerPreprocessor_120 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_109)))) (bvsge (let ((.cse3 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_109)) (.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset)) (.cse6 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_DerPreprocessor_123)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_109 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_109) .cse3 v_DerPreprocessor_122) v_ULTIMATE.start_main_~p~0.offset_109 ULTIMATE.start_main_~x~0))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (let ((.cse1 (select .cse0 c_ULTIMATE.start_main_~list~0.base))) (store .cse1 c_ULTIMATE.start_main_~list~0.offset (bvadd (select .cse1 c_ULTIMATE.start_main_~list~0.offset) (_ bv1 32)))))) (select (store (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.base_109)))) (store .cse5 v_ULTIMATE.start_main_~p~0.base_109 (store (store (select .cse5 v_ULTIMATE.start_main_~p~0.base_109) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_109 v_DerPreprocessor_124))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_120) .cse6)) (select (store (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.offset_109)))) (store .cse7 v_ULTIMATE.start_main_~p~0.base_109 (store (store (select .cse7 v_ULTIMATE.start_main_~p~0.base_109) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_109 v_DerPreprocessor_125))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_121) .cse6))) (_ bv10 32)))) is different from false [2021-10-29 05:00:03,966 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:03,968 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 9061376 treesize of output 8954967 [2021-10-29 05:00:33,210 WARN L207 SmtUtils]: Spent 29.24 s on a formula simplification that was a NOOP. DAG size: 1092 [2021-10-29 05:01:00,517 WARN L207 SmtUtils]: Spent 27.23 s on a formula simplification that was a NOOP. DAG size: 1096 [2021-10-29 05:01:00,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:01:27,024 WARN L207 SmtUtils]: Spent 26.50 s on a formula simplification that was a NOOP. DAG size: 1060 [2021-10-29 05:01:52,297 WARN L207 SmtUtils]: Spent 25.27 s on a formula simplification that was a NOOP. DAG size: 1087 [2021-10-29 05:01:52,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10658812 [2021-10-29 05:02:17,764 WARN L207 SmtUtils]: Spent 25.40 s on a formula simplification that was a NOOP. DAG size: 1087 [2021-10-29 05:02:25,157 WARN L207 SmtUtils]: Spent 7.28 s on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2021-10-29 05:02:25,161 INFO L354 Elim1Store]: treesize reduction 366, result has 19.0 percent of original size [2021-10-29 05:02:25,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 10658812 treesize of output 8004770 [2021-10-29 05:02:51,536 WARN L207 SmtUtils]: Spent 26.37 s on a formula simplification that was a NOOP. DAG size: 1110 [2021-10-29 05:03:18,700 WARN L207 SmtUtils]: Spent 27.16 s on a formula simplification that was a NOOP. DAG size: 1099 [2021-10-29 05:03:20,342 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-10-29 05:03:20,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 9883002 treesize of output 8878380 [2021-10-29 05:03:46,573 WARN L207 SmtUtils]: Spent 26.23 s on a formula simplification that was a NOOP. DAG size: 1119 [2021-10-29 05:04:12,758 WARN L207 SmtUtils]: Spent 26.18 s on a formula simplification that was a NOOP. DAG size: 1114 [2021-10-29 05:04:38,781 WARN L207 SmtUtils]: Spent 25.90 s on a formula simplification that was a NOOP. DAG size: 1118 [2021-10-29 05:04:38,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:05:04,018 WARN L207 SmtUtils]: Spent 25.23 s on a formula simplification that was a NOOP. DAG size: 1052 [2021-10-29 05:05:29,352 WARN L207 SmtUtils]: Spent 25.33 s on a formula simplification that was a NOOP. DAG size: 1109 [2021-10-29 05:05:29,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10582223 [2021-10-29 05:05:54,767 WARN L207 SmtUtils]: Spent 25.35 s on a formula simplification that was a NOOP. DAG size: 1109 [2021-10-29 05:05:57,072 INFO L354 Elim1Store]: treesize reduction 417, result has 16.6 percent of original size [2021-10-29 05:05:57,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 10582223 treesize of output 7797110 [2021-10-29 05:06:22,478 WARN L207 SmtUtils]: Spent 25.40 s on a formula simplification that was a NOOP. DAG size: 1116 [2021-10-29 05:06:48,168 WARN L207 SmtUtils]: Spent 25.68 s on a formula simplification that was a NOOP. DAG size: 1105 [2021-10-29 05:06:48,526 INFO L354 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2021-10-29 05:06:48,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9413208 treesize of output 8539650 [2021-10-29 05:07:14,118 WARN L207 SmtUtils]: Spent 25.59 s on a formula simplification that was a NOOP. DAG size: 1119 [2021-10-29 05:07:14,118 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 05:07:15,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:07:15,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096491785] [2021-10-29 05:07:15,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 05:07:15,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1042150817] [2021-10-29 05:07:15,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 05:07:15,118 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:07:15,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:07:15,124 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:07:15,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-10-29 05:07:16,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 05:07:16,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:07:16,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-29 05:07:16,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:07:16,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:07:16,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:07:16,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:07:16,295 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:07:16,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 23 [2021-10-29 05:07:16,343 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:07:16,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-29 05:07:16,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:07:16,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-10-29 05:07:16,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-29 05:07:16,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:07:17,166 INFO L354 Elim1Store]: treesize reduction 202, result has 11.0 percent of original size [2021-10-29 05:07:17,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 368 treesize of output 238 [2021-10-29 05:07:17,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:07:17,357 INFO L354 Elim1Store]: treesize reduction 194, result has 10.6 percent of original size [2021-10-29 05:07:17,357 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 460 treesize of output 314 [2021-10-29 05:07:17,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:17,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-10-29 05:07:17,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:17,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-10-29 05:07:17,429 INFO L354 Elim1Store]: treesize reduction 108, result has 20.0 percent of original size [2021-10-29 05:07:17,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 188 [2021-10-29 05:07:17,466 INFO L354 Elim1Store]: treesize reduction 22, result has 61.4 percent of original size [2021-10-29 05:07:17,466 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 148 treesize of output 160 [2021-10-29 05:07:17,473 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 05:07:18,401 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-10-29 05:07:18,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 142 [2021-10-29 05:07:18,431 INFO L354 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2021-10-29 05:07:18,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 120 [2021-10-29 05:07:18,438 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-29 05:07:18,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 76 [2021-10-29 05:07:18,533 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-10-29 05:07:18,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 69 [2021-10-29 05:07:18,539 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-29 05:07:18,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 41 [2021-10-29 05:07:18,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2021-10-29 05:07:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:07:18,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:07:18,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:18,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-29 05:07:18,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:18,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-29 05:07:19,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:19,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-10-29 05:07:19,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:19,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-10-29 05:07:19,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:19,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-10-29 05:07:19,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:19,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-10-29 05:07:24,743 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_132 (_ BitVec 32)) (v_DerPreprocessor_133 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_134 (_ BitVec 32)) (v_DerPreprocessor_135 (_ BitVec 32)) (v_DerPreprocessor_130 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_114 (_ BitVec 32)) (v_DerPreprocessor_131 (_ BitVec 32))) (let ((.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (select (store (select (let ((.cse8 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base) .cse5 v_ULTIMATE.start_main_~p~0.base_114)))) (store .cse8 v_ULTIMATE.start_main_~p~0.base_114 (store (store (select .cse8 v_ULTIMATE.start_main_~p~0.base_114) (_ bv4 32) (_ bv0 32)) (_ bv0 32) v_DerPreprocessor_134))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_130) .cse7)) (.cse1 (select (store (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base) .cse5 (_ bv0 32))))) (store .cse6 v_ULTIMATE.start_main_~p~0.base_114 (store (store (select .cse6 v_ULTIMATE.start_main_~p~0.base_114) (_ bv4 32) (_ bv0 32)) (_ bv0 32) v_DerPreprocessor_135))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_131) .cse7))) (or (and (= .cse0 (_ bv0 32)) (= .cse1 (_ bv0 32))) (bvsge (select (select (let ((.cse2 (let ((.cse4 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) .cse5 v_DerPreprocessor_133)))) (store .cse4 v_ULTIMATE.start_main_~p~0.base_114 (store (store (select .cse4 v_ULTIMATE.start_main_~p~0.base_114) (_ bv4 32) v_DerPreprocessor_132) (_ bv0 32) ULTIMATE.start_main_~x~0))))) (store .cse2 c_ULTIMATE.start_main_~list~0.base (let ((.cse3 (select .cse2 c_ULTIMATE.start_main_~list~0.base))) (store .cse3 c_ULTIMATE.start_main_~list~0.offset (bvadd (_ bv1 32) (select .cse3 c_ULTIMATE.start_main_~list~0.offset)))))) .cse0) .cse1) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_114)))))))) is different from false [2021-10-29 05:07:31,638 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:31,639 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 351122 treesize of output 346725 [2021-10-29 05:07:33,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:35,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 453182 [2021-10-29 05:07:37,969 INFO L354 Elim1Store]: treesize reduction 243, result has 25.7 percent of original size [2021-10-29 05:07:37,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 453182 treesize of output 291473 [2021-10-29 05:07:40,921 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-10-29 05:07:40,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 362217 treesize of output 322777 [2021-10-29 05:07:43,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:45,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429232 [2021-10-29 05:07:46,419 INFO L354 Elim1Store]: treesize reduction 289, result has 19.9 percent of original size [2021-10-29 05:07:46,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 429232 treesize of output 259319 [2021-10-29 05:07:48,390 INFO L354 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2021-10-29 05:07:48,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 259301 treesize of output 255241 [2021-10-29 05:07:49,259 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 05:07:49,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 05:07:49,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968152384] [2021-10-29 05:07:49,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 05:07:49,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:07:49,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:07:49,572 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:07:49,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-29 05:07:50,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 05:07:50,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:07:50,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-29 05:07:50,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:07:50,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:07:50,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-29 05:07:50,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:07:50,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:07:50,459 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:07:50,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 23 [2021-10-29 05:07:50,512 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:07:50,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-29 05:07:50,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:07:50,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-10-29 05:07:50,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:07:51,596 INFO L354 Elim1Store]: treesize reduction 209, result has 11.1 percent of original size [2021-10-29 05:07:51,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 293 treesize of output 179 [2021-10-29 05:07:51,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:51,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 285 [2021-10-29 05:07:51,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:51,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 292 [2021-10-29 05:07:51,778 INFO L354 Elim1Store]: treesize reduction 332, result has 12.2 percent of original size [2021-10-29 05:07:51,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 292 treesize of output 258 [2021-10-29 05:07:51,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:07:51,885 INFO L354 Elim1Store]: treesize reduction 429, result has 8.9 percent of original size [2021-10-29 05:07:51,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 216 treesize of output 151 [2021-10-29 05:07:51,922 INFO L354 Elim1Store]: treesize reduction 22, result has 61.4 percent of original size [2021-10-29 05:07:51,922 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 152 treesize of output 164 [2021-10-29 05:07:51,923 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 05:07:52,624 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-10-29 05:07:52,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 201 treesize of output 162 [2021-10-29 05:07:52,674 INFO L354 Elim1Store]: treesize reduction 61, result has 10.3 percent of original size [2021-10-29 05:07:52,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 101 [2021-10-29 05:07:52,705 INFO L354 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2021-10-29 05:07:52,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 114 [2021-10-29 05:07:52,857 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-10-29 05:07:52,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 97 [2021-10-29 05:07:52,868 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-29 05:07:52,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 48 [2021-10-29 05:07:52,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-29 05:07:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:07:52,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:07:52,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:52,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 05:07:52,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:52,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-29 05:07:53,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:53,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-10-29 05:07:53,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:53,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-29 05:07:53,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:53,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-10-29 05:07:53,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:53,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-10-29 05:07:55,638 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_143 (_ BitVec 32)) (v_DerPreprocessor_121 (_ BitVec 32)) (v_DerPreprocessor_144 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_145 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_119 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_119 (_ BitVec 32)) (v_DerPreprocessor_142 (_ BitVec 32)) (v_DerPreprocessor_120 (_ BitVec 32))) (or (bvsge (let ((.cse3 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_119)) (.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset)) (.cse6 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_DerPreprocessor_143)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_119 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_119) .cse3 v_DerPreprocessor_142) v_ULTIMATE.start_main_~p~0.offset_119 ULTIMATE.start_main_~x~0))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (let ((.cse1 (select .cse0 c_ULTIMATE.start_main_~list~0.base))) (store .cse1 c_ULTIMATE.start_main_~list~0.offset (bvadd (select .cse1 c_ULTIMATE.start_main_~list~0.offset) (_ bv1 32)))))) (select (store (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.base_119)))) (store .cse5 v_ULTIMATE.start_main_~p~0.base_119 (store (store (select .cse5 v_ULTIMATE.start_main_~p~0.base_119) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_119 v_DerPreprocessor_144))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_120) .cse6)) (select (store (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.offset_119)))) (store .cse7 v_ULTIMATE.start_main_~p~0.base_119 (store (store (select .cse7 v_ULTIMATE.start_main_~p~0.base_119) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_119 v_DerPreprocessor_145))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_121) .cse6))) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_119)))))) is different from false [2021-10-29 05:07:57,365 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:57,366 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 70764 treesize of output 70019 [2021-10-29 05:07:57,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:07:58,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83240 [2021-10-29 05:08:04,387 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2021-10-29 05:08:04,387 INFO L354 Elim1Store]: treesize reduction 366, result has 19.0 percent of original size [2021-10-29 05:08:04,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 83240 treesize of output 62670 [2021-10-29 05:08:05,919 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-10-29 05:08:05,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 77598 treesize of output 69652 [2021-10-29 05:08:06,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:08:06,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82871 [2021-10-29 05:08:09,780 INFO L354 Elim1Store]: treesize reduction 417, result has 16.6 percent of original size [2021-10-29 05:08:09,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 82871 treesize of output 61278 [2021-10-29 05:08:10,458 INFO L354 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2021-10-29 05:08:10,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 74168 treesize of output 67238 [2021-10-29 05:08:10,684 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 05:08:10,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 05:08:10,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:10,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 05:08:10,783 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-29 05:08:10,783 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 05:08:10,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:08:10,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:11,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:11,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:11,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 05:08:11,408 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2021-10-29 05:08:11,411 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:08:11,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:08:11 BoogieIcfgContainer [2021-10-29 05:08:11,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:08:11,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:08:11,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:08:11,433 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:08:11,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:56:11" (3/4) ... [2021-10-29 05:08:11,436 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:08:11,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:08:11,437 INFO L168 Benchmark]: Toolchain (without parser) took 721350.00 ms. Allocated memory was 56.6 MB in the beginning and 551.6 MB in the end (delta: 494.9 MB). Free memory was 32.7 MB in the beginning and 357.1 MB in the end (delta: -324.4 MB). Peak memory consumption was 169.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:11,437 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:11,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.43 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 31.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:11,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.35 ms. Allocated memory is still 56.6 MB. Free memory was 31.6 MB in the beginning and 29.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:11,437 INFO L168 Benchmark]: Boogie Preprocessor took 59.15 ms. Allocated memory is still 56.6 MB. Free memory was 29.7 MB in the beginning and 28.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:11,437 INFO L168 Benchmark]: RCFGBuilder took 815.44 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 27.9 MB in the beginning and 53.6 MB in the end (delta: -25.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:11,437 INFO L168 Benchmark]: TraceAbstraction took 719602.20 ms. Allocated memory was 79.7 MB in the beginning and 551.6 MB in the end (delta: 471.9 MB). Free memory was 53.0 MB in the beginning and 357.1 MB in the end (delta: -304.1 MB). Peak memory consumption was 340.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:11,438 INFO L168 Benchmark]: Witness Printer took 3.66 ms. Allocated memory is still 551.6 MB. Free memory is still 357.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:11,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 760.43 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 31.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.35 ms. Allocated memory is still 56.6 MB. Free memory was 31.6 MB in the beginning and 29.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.15 ms. Allocated memory is still 56.6 MB. Free memory was 29.7 MB in the beginning and 28.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 815.44 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 27.9 MB in the beginning and 53.6 MB in the end (delta: -25.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 719602.20 ms. Allocated memory was 79.7 MB in the beginning and 551.6 MB in the end (delta: 471.9 MB). Free memory was 53.0 MB in the beginning and 357.1 MB in the end (delta: -304.1 MB). Peak memory consumption was 340.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.66 ms. Allocated memory is still 551.6 MB. Free memory is still 357.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 589]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L573] Node *p, *list = malloc(sizeof(*list)); [L573] Node *p, *list = malloc(sizeof(*list)); [L574] Node *tail = list; [L575] list->next = ((void *)0) [L576] list->val = 10 [L577] COND TRUE __VERIFIER_nondet_int() [L578] int x = __VERIFIER_nondet_int(); [L579] COND FALSE !(x < 10 || x > 20) [L580] p = malloc(sizeof(*p)) [L581] tail->next = p [L582] p->next = ((void *)0) [L583] p->val = x [L584] tail = p [L577] COND TRUE __VERIFIER_nondet_int() [L578] int x = __VERIFIER_nondet_int(); [L579] COND FALSE !(x < 10 || x > 20) [L580] p = malloc(sizeof(*p)) [L581] tail->next = p [L582] p->next = ((void *)0) [L583] p->val = x [L584] tail = p [L577] COND FALSE !(__VERIFIER_nondet_int()) [L586] COND TRUE 1 [L587] p = list [L587] COND TRUE p!= ((void *)0) [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] COND FALSE !(!(p->val <= 20 && p->val >= 10)) [L590] EXPR p->val [L590] COND TRUE p->val < 20 [L590] EXPR p->val [L590] p->val++ [L587] EXPR p->next [L587] p = p->next [L587] COND TRUE p!= ((void *)0) [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] COND TRUE !(p->val <= 20 && p->val >= 10) [L589] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 719.4s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 55.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 654 SDslu, 1120 SDs, 0 SdLazy, 1658 SolverSat, 365 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 831 GetRequests, 596 SyntacticMatches, 14 SemanticMatches, 221 ConstructedPredicates, 33 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 100.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=10, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 451 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 590.0s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 744 ConstructedInterpolants, 164 QuantifiedInterpolants, 20580 SizeOfPredicates, 315 NumberOfNonLiveVariables, 1828 ConjunctsInSsa, 432 ConjunctsInUnsatCore, 49 InterpolantComputations, 6 PerfectInterpolantSequences, 70/378 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:08:11,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88928f7a-2313-43b8-a5e8-7091249124ec/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...