./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH --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 599bde24b734dff8bcd3a53946a1033ced468fb55cf924fdefecd161d0c1af79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:01,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:01,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:01,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:01,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:01,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:01,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:01,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:01,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:01,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:01,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:01,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:01,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:01,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:01,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:01,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:01,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:01,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:01,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:01,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:01,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:01,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:01,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:01,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:01,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:01,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:01,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:01,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:01,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:01,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:01,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:01,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:01,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:01,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:01,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:01,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:01,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:01,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:01,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:01,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:01,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:01,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:40:01,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:01,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:01,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:01,432 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:01,433 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:01,433 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:01,433 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:40:01,433 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:01,440 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:01,440 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:40:01,441 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:40:01,442 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:01,442 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:40:01,442 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:40:01,442 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:40:01,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:01,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:01,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:40:01,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:01,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:01,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:40:01,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:01,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:40:01,445 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:01,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:01,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:40:01,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:01,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:40:01,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:01,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:01,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:01,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:01,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:01,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:40:01,449 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:40:01,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:40:01,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:40:01,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:01,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:01,450 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_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 599bde24b734dff8bcd3a53946a1033ced468fb55cf924fdefecd161d0c1af79 [2021-11-03 03:40:01,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:01,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:01,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:01,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:01,786 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:01,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c [2021-11-03 03:40:01,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/data/8d6de6477/20452c7a60884c7da5426bb372e71478/FLAG4f3c7d5c6 [2021-11-03 03:40:02,382 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:02,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c [2021-11-03 03:40:02,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/data/8d6de6477/20452c7a60884c7da5426bb372e71478/FLAG4f3c7d5c6 [2021-11-03 03:40:02,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/data/8d6de6477/20452c7a60884c7da5426bb372e71478 [2021-11-03 03:40:02,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:02,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:02,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:02,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:02,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:02,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:02" (1/1) ... [2021-11-03 03:40:02,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ae2b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:02, skipping insertion in model container [2021-11-03 03:40:02,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:02" (1/1) ... [2021-11-03 03:40:02,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:02,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:02,953 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c[420,433] [2021-11-03 03:40:02,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:02,974 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:40:02,987 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/sv-benchmarks/c/array-cav19/array_tripl_access_init_const.c[420,433] [2021-11-03 03:40:02,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:03,009 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:40:03,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03 WrapperNode [2021-11-03 03:40:03,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:03,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:03,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:40:03,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:40:03,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:03,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:40:03,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:40:03,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:40:03,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:40:03,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:40:03,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:40:03,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:40:03,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:03,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:03,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:40:03,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:40:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:40:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:40:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:40:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:40:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:40:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:40:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:40:03,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:40:03,444 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-03 03:40:03,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:03 BoogieIcfgContainer [2021-11-03 03:40:03,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:40:03,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:40:03,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:40:03,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:40:03,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:02" (1/3) ... [2021-11-03 03:40:03,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afe28c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:03, skipping insertion in model container [2021-11-03 03:40:03,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03" (2/3) ... [2021-11-03 03:40:03,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afe28c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:03, skipping insertion in model container [2021-11-03 03:40:03,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:03" (3/3) ... [2021-11-03 03:40:03,456 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tripl_access_init_const.c [2021-11-03 03:40:03,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:40:03,462 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:40:03,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:40:03,530 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 [2021-11-03 03:40:03,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:40:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 03:40:03,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:03,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 03:40:03,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:40:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash 72684179, now seen corresponding path program 1 times [2021-11-03 03:40:03,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:03,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950583909] [2021-11-03 03:40:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:03,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:03,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:03,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950583909] [2021-11-03 03:40:03,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950583909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:03,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:03,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:40:03,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708493888] [2021-11-03 03:40:03,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:40:03,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:03,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:40:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:40:03,903 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:03,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:03,958 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-11-03 03:40:03,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:40:03,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 03:40:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:03,969 INFO L225 Difference]: With dead ends: 15 [2021-11-03 03:40:03,969 INFO L226 Difference]: Without dead ends: 8 [2021-11-03 03:40:03,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:40:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-03 03:40:04,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-03 03:40:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-03 03:40:04,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-11-03 03:40:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:04,010 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-03 03:40:04,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-03 03:40:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 03:40:04,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:04,011 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 03:40:04,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:40:04,012 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:40:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2045544120, now seen corresponding path program 1 times [2021-11-03 03:40:04,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:04,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909065938] [2021-11-03 03:40:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:04,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:04,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:04,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909065938] [2021-11-03 03:40:04,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909065938] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:40:04,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237956437] [2021-11-03 03:40:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:04,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:04,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:04,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:40:04,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 03:40:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:04,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:40:04,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:04,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:04,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237956437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:04,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1761887214] [2021-11-03 03:40:04,443 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-03 03:40:04,444 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:40:04,448 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:40:04,458 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:40:04,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:40:04,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,525 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:04,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 03:40:04,531 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:04,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 03:40:04,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 03:40:04,571 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 36=[|v_#valid_28|]} [2021-11-03 03:40:04,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 25 [2021-11-03 03:40:04,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:40:04,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:40:04,633 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:04,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:04,695 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-03 03:40:04,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 03:40:04,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 03:40:04,764 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:04,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:04,797 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-03 03:40:04,812 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:04,813 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-03 03:40:04,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,833 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:04,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 03:40:04,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 03:40:04,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:04,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-03 03:40:04,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:04,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:04,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:04,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:04,910 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:04,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-03 03:40:04,926 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:04,926 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:160, output treesize:164 [2021-11-03 03:40:04,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:04,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,137 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:05,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,151 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:05,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 03:40:05,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:05,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:40:05,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 356 [2021-11-03 03:40:05,169 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:05,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-11-03 03:40:05,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-03 03:40:05,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-03 03:40:05,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:05,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:05,255 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:05,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 104 [2021-11-03 03:40:05,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-03 03:40:05,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-03 03:40:05,332 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:05,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,376 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,413 INFO L180 QuantifierPusher]: treesize reduction 105, result has 78.6 percent of original size [2021-11-03 03:40:05,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-03 03:40:05,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:40:05,436 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:482, output treesize:385 [2021-11-03 03:40:05,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,514 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-03 03:40:05,517 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:05,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:40:05,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-03 03:40:05,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:05,531 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 32 treesize of output 37 [2021-11-03 03:40:05,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:40:05,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:40:05,534 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:05,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:05,537 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:05,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-03 03:40:05,541 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:05,541 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-03 03:40:05,547 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-03 03:40:05,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 03:40:05,556 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:40:05,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:40:05,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:40:05,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-11-03 03:40:05,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414625420] [2021-11-03 03:40:05,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:40:05,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:40:05,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:40:05,869 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:05,895 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2021-11-03 03:40:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:40:05,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 03:40:05,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:05,896 INFO L225 Difference]: With dead ends: 16 [2021-11-03 03:40:05,896 INFO L226 Difference]: Without dead ends: 11 [2021-11-03 03:40:05,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:40:05,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-03 03:40:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-03 03:40:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-03 03:40:05,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2021-11-03 03:40:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:05,901 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-03 03:40:05,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:05,902 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-03 03:40:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:40:05,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:05,902 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-11-03 03:40:05,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:06,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:06,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:40:06,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1273784365, now seen corresponding path program 2 times [2021-11-03 03:40:06,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:06,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365139835] [2021-11-03 03:40:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:06,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:06,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:06,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365139835] [2021-11-03 03:40:06,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365139835] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:40:06,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699144046] [2021-11-03 03:40:06,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:40:06,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:06,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:06,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:40:06,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 03:40:06,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-03 03:40:06,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:40:06,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:40:06,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:06,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:06,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699144046] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:06,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [622833324] [2021-11-03 03:40:06,464 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-03 03:40:06,464 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:40:06,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:40:06,465 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:40:06,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:40:06,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,474 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:06,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 03:40:06,476 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:06,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 03:40:06,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 03:40:06,485 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 36=[|v_#valid_29|]} [2021-11-03 03:40:06,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 25 [2021-11-03 03:40:06,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:40:06,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:40:06,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:06,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,517 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-03 03:40:06,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 03:40:06,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 03:40:06,553 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:06,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,559 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-03 03:40:06,568 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:06,568 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-03 03:40:06,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:06,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-03 03:40:06,584 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 144 [2021-11-03 03:40:06,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 48 [2021-11-03 03:40:06,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:40:06,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:40:06,605 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:06,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,612 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,617 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-03 03:40:06,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-03 03:40:06,622 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:06,622 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:146 [2021-11-03 03:40:06,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,707 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:06,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,716 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:06,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 03:40:06,719 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:06,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-03 03:40:06,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-11-03 03:40:06,728 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:06,731 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-11-03 03:40:06,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-03 03:40:06,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-03 03:40:06,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:06,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:06,786 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:06,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 93 [2021-11-03 03:40:06,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-03 03:40:06,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-03 03:40:06,830 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:06,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,897 INFO L180 QuantifierPusher]: treesize reduction 100, result has 78.9 percent of original size [2021-11-03 03:40:06,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 374 [2021-11-03 03:40:06,902 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:40:06,903 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:466, output treesize:374 [2021-11-03 03:40:06,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,969 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-03 03:40:06,974 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:06,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:40:06,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-03 03:40:06,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:06,986 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 32 treesize of output 37 [2021-11-03 03:40:06,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:40:06,990 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:40:06,991 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:06,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:06,996 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:06,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-03 03:40:06,999 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:06,999 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-03 03:40:07,005 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-03 03:40:07,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 03:40:07,012 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:40:07,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:40:07,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:40:07,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-11-03 03:40:07,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331551996] [2021-11-03 03:40:07,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 03:40:07,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:07,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 03:40:07,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=235, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:40:07,293 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-11-03 03:40:07,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:07,335 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2021-11-03 03:40:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:40:07,335 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 03:40:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:07,336 INFO L225 Difference]: With dead ends: 22 [2021-11-03 03:40:07,336 INFO L226 Difference]: Without dead ends: 17 [2021-11-03 03:40:07,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=235, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:40:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-03 03:40:07,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-03 03:40:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-03 03:40:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-03 03:40:07,340 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-11-03 03:40:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:07,341 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-03 03:40:07,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-11-03 03:40:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-03 03:40:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 03:40:07,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:07,342 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2021-11-03 03:40:07,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:07,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-03 03:40:07,571 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:40:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:07,572 INFO L85 PathProgramCache]: Analyzing trace with hash 904508339, now seen corresponding path program 3 times [2021-11-03 03:40:07,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:07,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017838998] [2021-11-03 03:40:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:07,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:07,760 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:07,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017838998] [2021-11-03 03:40:07,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017838998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:40:07,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834632939] [2021-11-03 03:40:07,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 03:40:07,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:07,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:07,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:40:07,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 03:40:07,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 03:40:07,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:40:07,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 03:40:07,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:08,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:08,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834632939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:08,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [454358271] [2021-11-03 03:40:08,349 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-03 03:40:08,349 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:40:08,350 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:40:08,350 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:40:08,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:40:08,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,356 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:08,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 03:40:08,358 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:08,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 03:40:08,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 03:40:08,364 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 36=[|v_#valid_30|]} [2021-11-03 03:40:08,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 25 [2021-11-03 03:40:08,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:40:08,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:40:08,392 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:08,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,399 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-03 03:40:08,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 03:40:08,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 03:40:08,432 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:08,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,437 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-03 03:40:08,441 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:08,441 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-03 03:40:08,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,446 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:08,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 03:40:08,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 03:40:08,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-03 03:40:08,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:08,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:08,469 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:08,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,476 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-03 03:40:08,481 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:08,481 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:160, output treesize:164 [2021-11-03 03:40:08,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,595 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:08,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,600 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:08,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:40:08,603 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:08,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 03:40:08,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 356 [2021-11-03 03:40:08,613 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:08,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-11-03 03:40:08,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-03 03:40:08,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-03 03:40:08,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:08,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:08,668 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:08,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 104 [2021-11-03 03:40:08,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-03 03:40:08,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-03 03:40:08,760 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:08,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,802 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,816 INFO L180 QuantifierPusher]: treesize reduction 105, result has 78.6 percent of original size [2021-11-03 03:40:08,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 385 [2021-11-03 03:40:08,823 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:40:08,824 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:482, output treesize:385 [2021-11-03 03:40:08,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,902 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-03 03:40:08,904 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:08,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:40:08,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-03 03:40:08,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:08,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2021-11-03 03:40:08,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:40:08,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:40:08,924 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:08,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:08,927 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:08,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-03 03:40:08,931 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:08,931 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-03 03:40:08,937 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-03 03:40:08,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 03:40:08,946 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:40:09,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:40:09,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:40:09,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2021-11-03 03:40:09,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518172487] [2021-11-03 03:40:09,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-03 03:40:09,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-03 03:40:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=829, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 03:40:09,262 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-11-03 03:40:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:09,345 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2021-11-03 03:40:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 03:40:09,346 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 03:40:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:09,346 INFO L225 Difference]: With dead ends: 34 [2021-11-03 03:40:09,347 INFO L226 Difference]: Without dead ends: 29 [2021-11-03 03:40:09,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=653, Invalid=829, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 03:40:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-03 03:40:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-03 03:40:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-11-03 03:40:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-03 03:40:09,355 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2021-11-03 03:40:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:09,356 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-03 03:40:09,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-11-03 03:40:09,356 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-03 03:40:09,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 03:40:09,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:09,358 INFO L513 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2021-11-03 03:40:09,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:09,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-03 03:40:09,579 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:40:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:09,580 INFO L85 PathProgramCache]: Analyzing trace with hash 102675315, now seen corresponding path program 4 times [2021-11-03 03:40:09,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:09,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561340482] [2021-11-03 03:40:09,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:09,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:09,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:09,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561340482] [2021-11-03 03:40:09,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561340482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:40:09,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985031822] [2021-11-03 03:40:09,988 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 03:40:09,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:09,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:09,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:40:10,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 03:40:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:10,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 03:40:10,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:10,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:11,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985031822] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:11,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [635524371] [2021-11-03 03:40:11,611 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-03 03:40:11,611 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:40:11,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:40:11,612 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:40:11,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:40:11,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:11,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 03:40:11,624 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:11,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 03:40:11,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 03:40:11,630 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 36=[|v_#valid_31|]} [2021-11-03 03:40:11,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 25 [2021-11-03 03:40:11,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:40:11,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 03:40:11,656 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:11,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:11,663 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-03 03:40:11,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 03:40:11,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 03:40:11,699 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:11,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:11,703 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-03 03:40:11,707 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:11,708 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:159, output treesize:121 [2021-11-03 03:40:11,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,713 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:11,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-03 03:40:11,717 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 144 [2021-11-03 03:40:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 48 [2021-11-03 03:40:11,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:40:11,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:40:11,737 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:11,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:11,743 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,745 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-03 03:40:11,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-03 03:40:11,748 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:11,748 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:146 [2021-11-03 03:40:11,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:11,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:11,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:11,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,819 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:11,823 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,824 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:11,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 03:40:11,826 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:11,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-03 03:40:11,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-11-03 03:40:11,832 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:11,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-11-03 03:40:11,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-03 03:40:11,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 93 [2021-11-03 03:40:11,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-03 03:40:11,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-03 03:40:11,918 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:11,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:11,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2021-11-03 03:40:11,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:11,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 03:40:11,945 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:11,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:11,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:11,988 INFO L180 QuantifierPusher]: treesize reduction 100, result has 78.9 percent of original size [2021-11-03 03:40:11,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 374 [2021-11-03 03:40:11,993 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:40:11,994 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:466, output treesize:374 [2021-11-03 03:40:12,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:12,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:12,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:12,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:12,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:12,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:12,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:12,053 INFO L180 QuantifierPusher]: treesize reduction 42, result has 65.6 percent of original size [2021-11-03 03:40:12,055 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:40:12,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:12,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:40:12,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-03 03:40:12,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:12,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:12,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:40:12,067 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 32 treesize of output 37 [2021-11-03 03:40:12,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:12,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:40:12,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:12,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:40:12,069 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:40:12,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:40:12,072 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:12,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:40:12,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-03 03:40:12,074 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:40:12,075 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:81 [2021-11-03 03:40:12,079 INFO L180 QuantifierPusher]: treesize reduction 43, result has 52.2 percent of original size [2021-11-03 03:40:12,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 03:40:12,086 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:40:12,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:40:12,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:40:12,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2021-11-03 03:40:12,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944075314] [2021-11-03 03:40:12,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-03 03:40:12,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:40:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-03 03:40:12,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2453, Invalid=3097, Unknown=0, NotChecked=0, Total=5550 [2021-11-03 03:40:12,346 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:12,478 INFO L93 Difference]: Finished difference Result 58 states and 83 transitions. [2021-11-03 03:40:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-03 03:40:12,481 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 03:40:12,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:12,483 INFO L225 Difference]: With dead ends: 58 [2021-11-03 03:40:12,484 INFO L226 Difference]: Without dead ends: 53 [2021-11-03 03:40:12,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2585 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2453, Invalid=3097, Unknown=0, NotChecked=0, Total=5550 [2021-11-03 03:40:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-03 03:40:12,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-03 03:40:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 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) [2021-11-03 03:40:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-11-03 03:40:12,504 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 27 [2021-11-03 03:40:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:12,505 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-11-03 03:40:12,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-11-03 03:40:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 03:40:12,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:12,508 INFO L513 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1] [2021-11-03 03:40:12,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:12,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-03 03:40:12,724 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:40:12,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:12,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1127469811, now seen corresponding path program 5 times [2021-11-03 03:40:12,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:40:12,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943662624] [2021-11-03 03:40:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:12,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:40:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:14,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:40:14,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943662624] [2021-11-03 03:40:14,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943662624] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:40:14,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469669980] [2021-11-03 03:40:14,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:40:14,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:14,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:14,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:40:14,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730cf20e-9f03-48d5-b102-1d96b47487b0/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process