./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P --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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:19:36,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:19:37,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:19:37,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:19:37,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:19:37,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:19:37,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:19:37,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:19:37,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:19:37,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:19:37,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:19:37,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:19:37,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:19:37,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:19:37,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:19:37,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:19:37,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:19:37,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:19:37,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:19:37,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:19:37,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:19:37,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:19:37,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:19:37,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:19:37,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:19:37,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:19:37,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:19:37,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:19:37,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:19:37,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:19:37,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:19:37,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:19:37,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:19:37,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:19:37,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:19:37,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:19:37,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:19:37,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:19:37,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:19:37,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:19:37,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:19:37,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:19:37,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:19:37,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:19:37,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:19:37,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:19:37,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:19:37,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:19:37,113 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:19:37,113 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:19:37,114 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:19:37,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:19:37,114 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:19:37,114 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:19:37,115 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:19:37,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:19:37,115 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:19:37,115 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:19:37,116 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:19:37,116 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:19:37,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:19:37,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:19:37,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:19:37,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:19:37,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:19:37,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:19:37,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:19:37,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:19:37,119 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:19:37,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:19:37,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:19:37,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:19:37,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:19:37,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:19:37,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:19:37,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:19:37,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:19:37,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:19:37,121 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:19:37,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:19:37,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:19:37,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:19:37,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:19:37,122 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_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2021-11-21 01:19:37,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:19:37,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:19:37,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:19:37,406 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:19:37,407 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:19:37,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-21 01:19:37,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/data/04d952c4b/d0b0ff2502d248fc8ac4c3dd395bfe68/FLAG2c9926f1e [2021-11-21 01:19:38,123 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:19:38,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-21 01:19:38,144 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/data/04d952c4b/d0b0ff2502d248fc8ac4c3dd395bfe68/FLAG2c9926f1e [2021-11-21 01:19:38,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/data/04d952c4b/d0b0ff2502d248fc8ac4c3dd395bfe68 [2021-11-21 01:19:38,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:19:38,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:19:38,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:19:38,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:19:38,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:19:38,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:19:38" (1/1) ... [2021-11-21 01:19:38,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307bdb8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:38, skipping insertion in model container [2021-11-21 01:19:38,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:19:38" (1/1) ... [2021-11-21 01:19:38,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:19:38,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:19:38,887 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-21 01:19:38,985 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-21 01:19:39,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:19:39,018 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:19:39,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-21 01:19:39,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-21 01:19:39,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:19:39,220 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:19:39,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39 WrapperNode [2021-11-21 01:19:39,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:19:39,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:19:39,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:19:39,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:19:39,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,327 INFO L137 Inliner]: procedures = 177, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1026 [2021-11-21 01:19:39,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:19:39,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:19:39,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:19:39,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:19:39,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:19:39,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:19:39,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:19:39,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:19:39,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (1/1) ... [2021-11-21 01:19:39,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:19:39,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:39,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:19:39,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:19:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:19:39,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:19:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:19:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:19:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:19:39,561 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:19:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:19:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:19:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:19:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:19:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:19:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:19:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:19:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:19:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:19:39,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:19:39,808 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:19:39,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:19:40,865 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:19:41,278 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:19:41,278 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-21 01:19:41,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:19:41 BoogieIcfgContainer [2021-11-21 01:19:41,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:19:41,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:19:41,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:19:41,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:19:41,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:19:38" (1/3) ... [2021-11-21 01:19:41,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a17e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:19:41, skipping insertion in model container [2021-11-21 01:19:41,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:39" (2/3) ... [2021-11-21 01:19:41,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a17e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:19:41, skipping insertion in model container [2021-11-21 01:19:41,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:19:41" (3/3) ... [2021-11-21 01:19:41,292 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-1.i [2021-11-21 01:19:41,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:19:41,298 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:19:41,346 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:19:41,353 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:19:41,354 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:19:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 110 states have (on average 1.8) internal successors, (198), 117 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:19:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:19:41,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:41,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:41,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash -957118725, now seen corresponding path program 1 times [2021-11-21 01:19:41,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:41,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320010700] [2021-11-21 01:19:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:41,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:19:41,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:41,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320010700] [2021-11-21 01:19:41,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320010700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:41,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:41,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:19:41,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336875143] [2021-11-21 01:19:41,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:41,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:19:41,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:19:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:19:41,656 INFO L87 Difference]: Start difference. First operand has 123 states, 110 states have (on average 1.8) internal successors, (198), 117 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:19:42,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:42,464 INFO L93 Difference]: Finished difference Result 245 states and 432 transitions. [2021-11-21 01:19:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:19:42,474 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:19:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:42,484 INFO L225 Difference]: With dead ends: 245 [2021-11-21 01:19:42,484 INFO L226 Difference]: Without dead ends: 122 [2021-11-21 01:19:42,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:19:42,492 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:42,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:19:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-21 01:19:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-21 01:19:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 116 states have internal predecessors, (134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:19:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2021-11-21 01:19:42,543 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 8 [2021-11-21 01:19:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:42,544 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2021-11-21 01:19:42,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:19:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2021-11-21 01:19:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:19:42,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:42,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:42,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:19:42,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1851937168, now seen corresponding path program 1 times [2021-11-21 01:19:42,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:42,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806421191] [2021-11-21 01:19:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:42,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:19:42,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:42,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806421191] [2021-11-21 01:19:42,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806421191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:42,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:42,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:19:42,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481424895] [2021-11-21 01:19:42,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:42,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:19:42,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:42,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:19:42,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:19:42,614 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:19:43,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:43,811 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2021-11-21 01:19:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:19:43,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:19:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:43,819 INFO L225 Difference]: With dead ends: 258 [2021-11-21 01:19:43,819 INFO L226 Difference]: Without dead ends: 189 [2021-11-21 01:19:43,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:19:43,822 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 73 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:43,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 359 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 01:19:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-21 01:19:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2021-11-21 01:19:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 118 states have internal predecessors, (136), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:19:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2021-11-21 01:19:43,842 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 13 [2021-11-21 01:19:43,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:43,843 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2021-11-21 01:19:43,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:19:43,843 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2021-11-21 01:19:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 01:19:43,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:43,845 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:43,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:19:43,846 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:43,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:43,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1227120832, now seen corresponding path program 1 times [2021-11-21 01:19:43,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:43,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454357789] [2021-11-21 01:19:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:43,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:43,902 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:19:43,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248725267] [2021-11-21 01:19:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:43,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:43,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:43,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:43,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:19:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:44,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:19:44,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:19:44,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:19:44,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:44,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454357789] [2021-11-21 01:19:44,407 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:19:44,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248725267] [2021-11-21 01:19:44,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248725267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:44,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:44,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:19:44,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074445014] [2021-11-21 01:19:44,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:44,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:19:44,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:44,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:19:44,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:19:44,411 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:19:45,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:45,822 INFO L93 Difference]: Finished difference Result 304 states and 377 transitions. [2021-11-21 01:19:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:19:45,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-21 01:19:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:45,834 INFO L225 Difference]: With dead ends: 304 [2021-11-21 01:19:45,834 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 01:19:45,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:19:45,837 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:45,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 280 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:19:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 01:19:45,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2021-11-21 01:19:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 161 states have internal predecessors, (185), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:19:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2021-11-21 01:19:45,875 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 37 [2021-11-21 01:19:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:45,876 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2021-11-21 01:19:45,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:19:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2021-11-21 01:19:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-21 01:19:45,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:45,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:45,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 01:19:46,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-21 01:19:46,103 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2111487482, now seen corresponding path program 1 times [2021-11-21 01:19:46,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:46,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372634762] [2021-11-21 01:19:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:46,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:46,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:19:46,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160338131] [2021-11-21 01:19:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:46,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:46,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:46,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:46,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:19:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:46,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:19:46,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:46,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:19:46,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 01:19:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:19:46,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:19:46,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:46,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372634762] [2021-11-21 01:19:46,610 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:19:46,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160338131] [2021-11-21 01:19:46,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160338131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:46,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:46,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:19:46,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154207995] [2021-11-21 01:19:46,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:46,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:19:46,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:19:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:19:46,621 INFO L87 Difference]: Start difference. First operand 167 states and 201 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:19:49,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:19:49,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:49,598 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2021-11-21 01:19:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:19:49,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2021-11-21 01:19:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:49,606 INFO L225 Difference]: With dead ends: 231 [2021-11-21 01:19:49,606 INFO L226 Difference]: Without dead ends: 212 [2021-11-21 01:19:49,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:19:49,608 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 58 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:49,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 354 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 01:19:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-21 01:19:49,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2021-11-21 01:19:49,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 163 states have internal predecessors, (187), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:19:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2021-11-21 01:19:49,628 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 50 [2021-11-21 01:19:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:49,629 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2021-11-21 01:19:49,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:19:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2021-11-21 01:19:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 01:19:49,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:49,632 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:49,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:19:49,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:49,842 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1926488172, now seen corresponding path program 1 times [2021-11-21 01:19:49,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:49,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134021604] [2021-11-21 01:19:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:49,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:49,863 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:19:49,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367178009] [2021-11-21 01:19:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:49,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:49,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:49,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:49,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:19:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:50,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:19:50,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:19:50,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:19:50,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:50,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134021604] [2021-11-21 01:19:50,253 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:19:50,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367178009] [2021-11-21 01:19:50,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367178009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:50,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:50,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:19:50,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140578826] [2021-11-21 01:19:50,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:50,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:19:50,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:19:50,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:19:50,256 INFO L87 Difference]: Start difference. First operand 169 states and 203 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:19:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:51,073 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2021-11-21 01:19:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:19:51,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-11-21 01:19:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:51,076 INFO L225 Difference]: With dead ends: 395 [2021-11-21 01:19:51,076 INFO L226 Difference]: Without dead ends: 242 [2021-11-21 01:19:51,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:19:51,079 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 257 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:51,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 296 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:19:51,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-21 01:19:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 214. [2021-11-21 01:19:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 202 states have (on average 1.193069306930693) internal successors, (241), 208 states have internal predecessors, (241), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:19:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2021-11-21 01:19:51,101 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 57 [2021-11-21 01:19:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:51,101 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2021-11-21 01:19:51,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:19:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2021-11-21 01:19:51,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 01:19:51,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:51,105 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:51,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:19:51,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:51,327 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:51,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash 798103091, now seen corresponding path program 1 times [2021-11-21 01:19:51,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:51,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747735632] [2021-11-21 01:19:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:51,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:51,348 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:19:51,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916738442] [2021-11-21 01:19:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:51,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:51,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:51,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:51,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:20:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:20:24,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:20:24,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:20:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:20:24,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:20:24,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:20:24,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747735632] [2021-11-21 01:20:24,254 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:20:24,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916738442] [2021-11-21 01:20:24,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916738442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:20:24,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:20:24,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:20:24,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141697380] [2021-11-21 01:20:24,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:20:24,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:20:24,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:20:24,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:20:24,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:20:24,256 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:20:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:20:25,323 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2021-11-21 01:20:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:20:25,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-11-21 01:20:25,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:20:25,335 INFO L225 Difference]: With dead ends: 411 [2021-11-21 01:20:25,335 INFO L226 Difference]: Without dead ends: 216 [2021-11-21 01:20:25,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:20:25,337 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 1 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:20:25,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 389 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:20:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-21 01:20:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-21 01:20:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 210 states have internal predecessors, (243), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-21 01:20:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2021-11-21 01:20:25,356 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 64 [2021-11-21 01:20:25,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:20:25,356 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2021-11-21 01:20:25,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:20:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2021-11-21 01:20:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 01:20:25,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:20:25,360 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:20:25,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:20:25,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 01:20:25,583 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:20:25,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:20:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash -320971085, now seen corresponding path program 1 times [2021-11-21 01:20:25,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:20:25,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561280472] [2021-11-21 01:20:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:20:25,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:20:25,599 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:20:25,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227253204] [2021-11-21 01:20:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:20:25,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:20:25,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:20:25,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:20:25,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a137424-d739-4b70-95f5-293f5a41c829/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:21:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:30,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:21:30,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:21:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:21:30,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:21:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:21:31,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:31,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561280472] [2021-11-21 01:21:31,145 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:21:31,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227253204] [2021-11-21 01:21:31,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227253204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:21:31,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [434083322] [2021-11-21 01:21:31,172 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-21 01:21:31,172 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:21:31,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:21:31,185 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:21:31,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:21:31,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:21:31,370 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 15 treesize of output 1 [2021-11-21 01:21:31,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,400 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:21:31,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:21:31,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:21:31,459 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 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:21:31,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,621 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 22 treesize of output 7 [2021-11-21 01:21:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,662 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-21 01:21:31,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 01:21:31,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,732 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 01:21:31,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2021-11-21 01:21:31,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,783 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 22 treesize of output 7 [2021-11-21 01:21:31,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:31,848 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:21:31,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 01:21:33,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-21 01:21:33,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2021-11-21 01:21:33,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 01:21:33,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 01:21:33,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 01:21:33,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 98 [2021-11-21 01:21:33,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 79 [2021-11-21 01:21:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:33,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 01:21:34,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:21:34,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2021-11-21 01:21:34,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,200 INFO L354 Elim1Store]: treesize reduction 128, result has 14.1 percent of original size [2021-11-21 01:21:34,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 127 treesize of output 138 [2021-11-21 01:21:34,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,306 INFO L354 Elim1Store]: treesize reduction 232, result has 10.1 percent of original size [2021-11-21 01:21:34,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 126 treesize of output 132 [2021-11-21 01:21:34,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:34,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-11-21 01:21:35,034 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 16 treesize of output 12 [2021-11-21 01:21:35,047 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 14 treesize of output 10 [2021-11-21 01:21:35,055 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 14 treesize of output 10 [2021-11-21 01:21:35,123 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-21 01:21:35,124 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 1 case distinctions, treesize of input 98 treesize of output 97 [2021-11-21 01:21:35,145 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 01:21:35,145 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 1 case distinctions, treesize of input 94 treesize of output 93 [2021-11-21 01:21:35,167 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 01:21:35,168 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 1 case distinctions, treesize of input 90 treesize of output 89 [2021-11-21 01:21:35,247 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 16 treesize of output 12 [2021-11-21 01:21:35,257 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 14 treesize of output 10 [2021-11-21 01:21:35,269 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 14 treesize of output 10 [2021-11-21 01:21:35,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 01:21:35,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 01:21:35,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 01:21:35,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 01:21:35,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 01:21:35,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:35,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 01:21:44,775 WARN L227 SmtUtils]: Spent 8.66s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:21:44,776 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-21 01:21:44,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-21 01:21:44,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:56,857 WARN L227 SmtUtils]: Spent 12.03s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:21:56,858 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-21 01:21:56,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-21 01:22:10,142 WARN L227 SmtUtils]: Spent 13.12s on a formula simplification. DAG size of input: 252 DAG size of output: 143 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:22:10,143 INFO L354 Elim1Store]: treesize reduction 2662, result has 30.3 percent of original size [2021-11-21 01:22:10,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2852 treesize of output 2682 [2021-11-21 01:22:10,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:10,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:10,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:12,004 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-21 01:22:12,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25950 treesize of output 25981 [2021-11-21 01:22:12,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:12,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:13,303 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-21 01:22:13,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25960 treesize of output 25974 [2021-11-21 01:22:15,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:15,223 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-21 01:22:15,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 30 [2021-11-21 01:22:15,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:16,188 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:22:16,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 63 [2021-11-21 01:22:21,369 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:21,732 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:22,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:22,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:22,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:22,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:22,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,692 INFO L244 Elim1Store]: Index analysis took 173 ms [2021-11-21 01:22:22,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1274 treesize of output 812 [2021-11-21 01:22:24,968 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:25,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:46,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2021-11-21 01:22:47,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:47,409 INFO L244 Elim1Store]: Index analysis took 113 ms [2021-11-21 01:22:47,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:48,398 INFO L354 Elim1Store]: treesize reduction 18, result has 66.0 percent of original size [2021-11-21 01:22:48,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 87 [2021-11-21 01:22:49,838 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:56,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:57,007 INFO L244 Elim1Store]: Index analysis took 325 ms [2021-11-21 01:22:57,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:01,493 INFO L354 Elim1Store]: treesize reduction 8926, result has 45.5 percent of original size [2021-11-21 01:23:01,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 9501 treesize of output 14050 [2021-11-21 01:23:39,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:39,554 INFO L354 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2021-11-21 01:23:39,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 36120 treesize of output 35543 [2021-11-21 01:24:13,666 INFO L190 IndexEqualityManager]: detected not equals via solver