./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.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_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/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_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/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_91d490f8-7edd-42af-8531-989b99e21ada/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 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:57:07,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:57:07,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:57:07,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:57:07,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:57:07,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:57:07,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:57:07,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:57:07,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:57:07,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:57:07,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:57:07,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:57:07,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:57:07,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:57:07,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:57:07,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:57:07,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:57:07,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:57:07,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:57:07,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:57:07,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:57:07,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:57:07,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:57:07,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:57:07,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:57:08,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:57:08,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:57:08,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:57:08,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:57:08,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:57:08,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:57:08,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:57:08,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:57:08,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:57:08,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:57:08,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:57:08,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:57:08,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:57:08,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:57:08,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:57:08,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:57:08,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:57:08,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:57:08,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:57:08,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:57:08,066 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:57:08,066 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:57:08,066 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:57:08,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:57:08,067 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:57:08,074 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:57:08,074 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:57:08,075 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:57:08,075 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:57:08,076 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:57:08,076 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:57:08,076 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:57:08,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:57:08,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:57:08,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:57:08,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:57:08,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:57:08,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:57:08,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:57:08,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:57:08,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:57:08,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:57:08,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:57:08,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:57:08,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:57:08,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:57:08,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:57:08,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:57:08,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:57:08,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:57:08,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:57:08,083 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:57:08,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:57:08,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:57:08,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:57:08,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:57:08,084 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_91d490f8-7edd-42af-8531-989b99e21ada/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 [2021-11-03 03:57:08,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:57:08,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:57:08,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:57:08,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:57:08,462 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:57:08,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2021-11-03 03:57:08,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data/903316f49/56a5904a5e114d909725cc4f2e0c0bb6/FLAGd19c1c05e [2021-11-03 03:57:08,990 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:57:08,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2021-11-03 03:57:08,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data/903316f49/56a5904a5e114d909725cc4f2e0c0bb6/FLAGd19c1c05e [2021-11-03 03:57:09,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data/903316f49/56a5904a5e114d909725cc4f2e0c0bb6 [2021-11-03 03:57:09,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:57:09,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:57:09,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:57:09,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:57:09,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:57:09,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754cdbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09, skipping insertion in model container [2021-11-03 03:57:09,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:57:09,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:57:09,557 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_91d490f8-7edd-42af-8531-989b99e21ada/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2021-11-03 03:57:09,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:57:09,571 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:57:09,594 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_91d490f8-7edd-42af-8531-989b99e21ada/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2021-11-03 03:57:09,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:57:09,610 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:57:09,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09 WrapperNode [2021-11-03 03:57:09,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:57:09,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:57:09,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:57:09,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:57:09,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:57:09,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:57:09,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:57:09,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:57:09,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:57:09,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:57:09,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:57:09,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:57:09,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (1/1) ... [2021-11-03 03:57:09,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:57:09,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:57:09,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:57:09,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:57:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:57:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:57:09,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 03:57:09,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:57:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:57:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-03 03:57:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:57:10,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:57:10,135 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 03:57:10,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:57:10 BoogieIcfgContainer [2021-11-03 03:57:10,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:57:10,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:57:10,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:57:10,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:57:10,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:57:09" (1/3) ... [2021-11-03 03:57:10,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459c4a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:57:10, skipping insertion in model container [2021-11-03 03:57:10,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:09" (2/3) ... [2021-11-03 03:57:10,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459c4a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:57:10, skipping insertion in model container [2021-11-03 03:57:10,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:57:10" (3/3) ... [2021-11-03 03:57:10,157 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2021-11-03 03:57:10,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:57:10,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:57:10,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:57:10,271 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 03:57:10,271 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:57:10,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 03:57:10,314 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:10,315 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:57:10,316 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:57:10,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1338621212, now seen corresponding path program 1 times [2021-11-03 03:57:10,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:10,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239733328] [2021-11-03 03:57:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:10,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:10,612 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 03:57:10,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:10,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239733328] [2021-11-03 03:57:10,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239733328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:10,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:10,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 03:57:10,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832007480] [2021-11-03 03:57:10,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:57:10,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:10,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:57:10,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:57:10,637 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:10,729 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-11-03 03:57:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:57:10,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 03:57:10,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:10,739 INFO L225 Difference]: With dead ends: 44 [2021-11-03 03:57:10,739 INFO L226 Difference]: Without dead ends: 26 [2021-11-03 03:57:10,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:57:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-03 03:57:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 15. [2021-11-03 03:57:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-11-03 03:57:10,775 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 11 [2021-11-03 03:57:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:10,776 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-11-03 03:57:10,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-11-03 03:57:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 03:57:10,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:10,778 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:57:10,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:57:10,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:57:10,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:10,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1321610551, now seen corresponding path program 1 times [2021-11-03 03:57:10,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:10,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540289719] [2021-11-03 03:57:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:10,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:10,838 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 03:57:10,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:10,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540289719] [2021-11-03 03:57:10,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540289719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:10,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:10,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:57:10,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90637475] [2021-11-03 03:57:10,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:57:10,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:57:10,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:57:10,843 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:10,859 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-11-03 03:57:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:57:10,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 03:57:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:10,860 INFO L225 Difference]: With dead ends: 33 [2021-11-03 03:57:10,861 INFO L226 Difference]: Without dead ends: 25 [2021-11-03 03:57:10,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:57:10,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-03 03:57:10,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2021-11-03 03:57:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 03:57:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-03 03:57:10,867 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 11 [2021-11-03 03:57:10,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:10,867 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-03 03:57:10,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-03 03:57:10,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:57:10,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:10,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:57:10,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:57:10,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:57:10,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:10,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1139004290, now seen corresponding path program 1 times [2021-11-03 03:57:10,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:10,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61835951] [2021-11-03 03:57:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:10,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:57:10,898 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 03:57:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:57:10,953 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 03:57:10,953 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 03:57:10,954 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:57:10,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:57:10,960 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-03 03:57:10,963 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:57:10,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:57:10 BoogieIcfgContainer [2021-11-03 03:57:10,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:57:10,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:57:10,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:57:10,994 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:57:10,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:57:10" (3/4) ... [2021-11-03 03:57:10,998 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 03:57:10,998 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:57:11,000 INFO L168 Benchmark]: Toolchain (without parser) took 1631.66 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 65.3 MB in the beginning and 86.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:11,001 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 81.7 MB in the end (delta: 51.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:57:11,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.16 ms. Allocated memory is still 104.9 MB. Free memory was 65.2 MB in the beginning and 54.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:11,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.20 ms. Allocated memory is still 104.9 MB. Free memory was 54.7 MB in the beginning and 53.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:11,003 INFO L168 Benchmark]: Boogie Preprocessor took 75.29 ms. Allocated memory is still 104.9 MB. Free memory was 53.0 MB in the beginning and 51.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:11,004 INFO L168 Benchmark]: RCFGBuilder took 378.81 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 51.7 MB in the beginning and 100.4 MB in the end (delta: -48.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:11,005 INFO L168 Benchmark]: TraceAbstraction took 853.96 ms. Allocated memory is still 132.1 MB. Free memory was 99.9 MB in the beginning and 86.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:11,006 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 132.1 MB. Free memory was 86.9 MB in the beginning and 86.4 MB in the end (delta: 539.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:11,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 81.7 MB in the end (delta: 51.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.16 ms. Allocated memory is still 104.9 MB. Free memory was 65.2 MB in the beginning and 54.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.20 ms. Allocated memory is still 104.9 MB. Free memory was 54.7 MB in the beginning and 53.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.29 ms. Allocated memory is still 104.9 MB. Free memory was 53.0 MB in the beginning and 51.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 378.81 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 51.7 MB in the beginning and 100.4 MB in the end (delta: -48.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 853.96 ms. Allocated memory is still 132.1 MB. Free memory was 99.9 MB in the beginning and 86.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.66 ms. Allocated memory is still 132.1 MB. Free memory was 86.9 MB in the beginning and 86.4 MB in the end (delta: 539.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 36. Possible FailurePath: [L1] int __return_main; [L14] int main__i; [L15] float main__z; [L16] float main__t; [L17] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] main__t = __VERIFIER_nondet_float() [L20] int main____CPAchecker_TMP_0; [L21] EXPR main__min[0] VAL [__return_main=0] [L21] COND TRUE main__t >= (main__min[0]) [L23] EXPR main__max[4UL] VAL [__return_main=0] [L23] COND TRUE main__t <= (main__max[4UL]) [L25] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0] [L27] COND TRUE main____CPAchecker_TMP_0 != 0 [L29] main__i = 0 VAL [__return_main=0] [L31] COND TRUE main__i < 5UL [L33] EXPR main__max[main__i] VAL [__return_main=0] [L33] COND TRUE main__t <= (main__max[main__i]) [L36] EXPR main__min[main__i] [L36] EXPR main__max[main__i] [L36] EXPR main__min[main__i] [L36] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L37] int main____CPAchecker_TMP_1; VAL [__return_main=0] [L38] COND FALSE !(main__z >= 0.0) VAL [__return_main=0] [L63] main____CPAchecker_TMP_1 = 0 VAL [__return_main=0] [L45] int __tmp_1; [L46] __tmp_1 = main____CPAchecker_TMP_1 [L47] int __VERIFIER_assert__cond; [L48] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L49] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L51] reach_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 41 SDslu, 67 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 03:57:11,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/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_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/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 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:57:13,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:57:13,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:57:13,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:57:13,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:57:13,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:57:13,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:57:13,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:57:13,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:57:13,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:57:13,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:57:13,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:57:13,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:57:13,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:57:13,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:57:13,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:57:13,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:57:13,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:57:13,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:57:13,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:57:13,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:57:13,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:57:13,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:57:13,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:57:13,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:57:13,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:57:13,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:57:13,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:57:13,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:57:13,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:57:13,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:57:13,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:57:13,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:57:13,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:57:13,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:57:13,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:57:13,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:57:13,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:57:13,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:57:13,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:57:13,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:57:13,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:57:13,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:57:13,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:57:13,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:57:13,879 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:57:13,879 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:57:13,880 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:57:13,880 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:57:13,880 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:57:13,880 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:57:13,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:57:13,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:57:13,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:57:13,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:57:13,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:57:13,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:57:13,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:57:13,882 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:57:13,883 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:57:13,883 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:57:13,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:57:13,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:57:13,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:57:13,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:57:13,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:57:13,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:57:13,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:57:13,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:57:13,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:57:13,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:57:13,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:57:13,885 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:57:13,888 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:57:13,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:57:13,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:57:13,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:57:13,889 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 [2021-11-03 03:57:14,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:57:14,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:57:14,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:57:14,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:57:14,321 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:57:14,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2021-11-03 03:57:14,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data/268f3182e/76a876b99ebd4f8eba368ebded42b509/FLAGefb4dd0b2 [2021-11-03 03:57:15,083 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:57:15,085 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2021-11-03 03:57:15,093 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data/268f3182e/76a876b99ebd4f8eba368ebded42b509/FLAGefb4dd0b2 [2021-11-03 03:57:15,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/data/268f3182e/76a876b99ebd4f8eba368ebded42b509 [2021-11-03 03:57:15,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:57:15,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:57:15,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:57:15,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:57:15,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:57:15,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482ecdb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15, skipping insertion in model container [2021-11-03 03:57:15,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:57:15,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:57:15,640 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_91d490f8-7edd-42af-8531-989b99e21ada/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2021-11-03 03:57:15,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:57:15,663 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:57:15,728 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_91d490f8-7edd-42af-8531-989b99e21ada/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2021-11-03 03:57:15,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:57:15,747 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:57:15,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15 WrapperNode [2021-11-03 03:57:15,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:57:15,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:57:15,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:57:15,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:57:15,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:57:15,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:57:15,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:57:15,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:57:15,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:57:15,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:57:15,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:57:15,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:57:15,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (1/1) ... [2021-11-03 03:57:15,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:57:15,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:57:15,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:57:15,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:57:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-03 03:57:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:57:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:57:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-03 03:57:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:57:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:57:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:57:17,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:57:17,088 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 03:57:17,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:57:17 BoogieIcfgContainer [2021-11-03 03:57:17,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:57:17,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:57:17,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:57:17,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:57:17,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:57:15" (1/3) ... [2021-11-03 03:57:17,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590e71c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:57:17, skipping insertion in model container [2021-11-03 03:57:17,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:15" (2/3) ... [2021-11-03 03:57:17,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590e71c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:57:17, skipping insertion in model container [2021-11-03 03:57:17,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:57:17" (3/3) ... [2021-11-03 03:57:17,110 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2021-11-03 03:57:17,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:57:17,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:57:17,198 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:57:17,205 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 03:57:17,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:57:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:57:17,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:17,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:57:17,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:57:17,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash 83921358, now seen corresponding path program 1 times [2021-11-03 03:57:17,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:57:17,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717771385] [2021-11-03 03:57:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:17,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:57:17,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:57:17,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:57:17,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:57:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:17,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:57:17,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:57:17,829 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 03:57:17,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:57:17,893 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 03:57:17,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:57:17,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717771385] [2021-11-03 03:57:17,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717771385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:17,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:17,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:57:17,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215358404] [2021-11-03 03:57:17,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:57:17,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:57:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:57:17,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:57:17,921 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:25,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:25,138 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2021-11-03 03:57:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:57:25,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 03:57:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:25,191 INFO L225 Difference]: With dead ends: 55 [2021-11-03 03:57:25,191 INFO L226 Difference]: Without dead ends: 35 [2021-11-03 03:57:25,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:57:25,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-03 03:57:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 19. [2021-11-03 03:57:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-03 03:57:25,235 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 12 [2021-11-03 03:57:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:25,235 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-03 03:57:25,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:25,236 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-03 03:57:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 03:57:25,237 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:25,237 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:57:25,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 03:57:25,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:57:25,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:57:25,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash -6868241, now seen corresponding path program 1 times [2021-11-03 03:57:25,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:57:25,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481549708] [2021-11-03 03:57:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:25,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:57:25,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:57:25,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:57:25,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:57:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:25,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:57:25,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:57:25,904 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 03:57:25,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:57:25,997 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 03:57:25,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:57:25,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481549708] [2021-11-03 03:57:25,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481549708] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:25,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:25,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:57:25,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263715623] [2021-11-03 03:57:26,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:57:26,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:57:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:57:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:57:26,004 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 03:57:30,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:30,306 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-11-03 03:57:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:57:30,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 03:57:30,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:30,308 INFO L225 Difference]: With dead ends: 23 [2021-11-03 03:57:30,308 INFO L226 Difference]: Without dead ends: 19 [2021-11-03 03:57:30,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:57:30,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-03 03:57:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-03 03:57:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-11-03 03:57:30,315 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 13 [2021-11-03 03:57:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:30,315 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-11-03 03:57:30,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 03:57:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-11-03 03:57:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 03:57:30,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:30,317 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:57:30,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:57:30,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:57:30,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:57:30,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:30,538 INFO L85 PathProgramCache]: Analyzing trace with hash 10142420, now seen corresponding path program 1 times [2021-11-03 03:57:30,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:57:30,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478934729] [2021-11-03 03:57:30,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:30,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:57:30,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:57:30,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:57:30,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:57:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:30,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 03:57:30,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:57:33,592 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 03:57:33,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 178 treesize of output 86 [2021-11-03 03:58:21,453 WARN L207 SmtUtils]: Spent 16.12 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2021-11-03 03:59:19,726 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)))) (and (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse0) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse1 .cse0))) (_ +zero 11 53))) (fp.leq ULTIMATE.start_main_~main__t~0 .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)))))) is different from false [2021-11-03 03:59:21,753 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)))) (and (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse0) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse1 .cse0))) (_ +zero 11 53))) (fp.leq ULTIMATE.start_main_~main__t~0 .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)))))) is different from true [2021-11-03 04:02:06,650 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 04:02:06,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:16,342 WARN L838 $PredicateComparison]: unable to prove that (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) .cse0))))) (_ +zero 11 53)) is different from false [2021-11-03 04:02:18,402 WARN L860 $PredicateComparison]: unable to prove that (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) .cse0))))) (_ +zero 11 53)) is different from true [2021-11-03 04:02:28,794 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) .cse0))))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem10|))) is different from false [2021-11-03 04:02:30,860 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) .cse0))))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem10|))) is different from true [2021-11-03 04:02:41,252 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse0 .cse1)))) (_ +zero 11 53))))) is different from false [2021-11-03 04:02:43,315 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse0 .cse1)))) (_ +zero 11 53))))) is different from true [2021-11-03 04:02:53,019 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)))) is different from false [2021-11-03 04:02:55,084 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)))) is different from true [2021-11-03 04:03:09,176 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem9|)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)))) is different from false [2021-11-03 04:03:11,242 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem9|)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)))) is different from true [2021-11-03 04:03:26,804 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24))) (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse1 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse1)) (not (fp.leq ULTIMATE.start_main_~main__t~0 (let ((.cse3 (select .cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (not (fp.geq ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem8|)))))) is different from false [2021-11-03 04:03:28,872 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24))) (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse1 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse1)) (not (fp.leq ULTIMATE.start_main_~main__t~0 (let ((.cse3 (select .cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (not (fp.geq ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem8|)))))) is different from true [2021-11-03 04:03:43,111 WARN L207 SmtUtils]: Spent 14.20 s on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2021-11-03 04:03:43,112 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-03 04:03:43,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 207 treesize of output 102 [2021-11-03 04:04:54,324 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0))) (_ +zero 11 53)) (not (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse0)) (not (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (not (fp.geq ULTIMATE.start_main_~main__t~0 .cse0)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse1))))) (forall ((v_arrayElimCell_5 (_ BitVec 32))) (not (= (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))))) is different from false [2021-11-03 04:04:56,391 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0))) (_ +zero 11 53)) (not (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse0)) (not (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (not (fp.geq ULTIMATE.start_main_~main__t~0 .cse0)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse1))))) (forall ((v_arrayElimCell_5 (_ BitVec 32))) (not (= (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))))) is different from true [2021-11-03 04:04:56,392 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 04:04:56,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:04:56,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478934729] [2021-11-03 04:04:56,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478934729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:04:56,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:04:56,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 18 [2021-11-03 04:04:56,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652226389] [2021-11-03 04:04:56,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:04:56,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:04:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:04:56,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=77, Unknown=18, NotChecked=200, Total=342 [2021-11-03 04:04:56,400 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:05:00,670 WARN L838 $PredicateComparison]: unable to prove that (and (or (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0))) (_ +zero 11 53)) (not (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse0)) (not (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (not (fp.geq ULTIMATE.start_main_~main__t~0 .cse0)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse1))))) (forall ((v_arrayElimCell_5 (_ BitVec 32))) (not (= (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-03 04:05:02,722 WARN L860 $PredicateComparison]: unable to prove that (and (or (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0))) (_ +zero 11 53)) (not (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse0)) (not (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (not (fp.geq ULTIMATE.start_main_~main__t~0 .cse0)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse1))))) (forall ((v_arrayElimCell_5 (_ BitVec 32))) (not (= (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 04:05:04,757 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|)) (.cse8 (let ((.cse10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (and (= (let ((.cse0 (select .cse1 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24))) (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse3 (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse2) (fp.sub c_currentRoundingMode .cse3 .cse2)))) (_ +zero 11 53)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse3)) (not (fp.leq ULTIMATE.start_main_~main__t~0 (let ((.cse5 (select .cse6 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (not (fp.geq ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem8|)))))) (= .cse8 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (= (let ((.cse9 (select .cse1 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse8 |c_ULTIMATE.start_main_#t~mem8|))) is different from false [2021-11-03 04:05:06,817 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|)) (.cse8 (let ((.cse10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (and (= (let ((.cse0 (select .cse1 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24))) (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse3 (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse2) (fp.sub c_currentRoundingMode .cse3 .cse2)))) (_ +zero 11 53)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse3)) (not (fp.leq ULTIMATE.start_main_~main__t~0 (let ((.cse5 (select .cse6 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (not (fp.geq ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem8|)))))) (= .cse8 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (= (let ((.cse9 (select .cse1 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse8 |c_ULTIMATE.start_main_#t~mem8|))) is different from true [2021-11-03 04:05:08,863 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse0 (let ((.cse6 (select .cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6)))) (.cse1 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5)))) (.cse2 (let ((.cse3 (select .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (= .cse0 |c_ULTIMATE.start_main_#t~mem9|) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem9|)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse2))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse1) (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-11-03 04:05:10,929 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse0 (let ((.cse6 (select .cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6)))) (.cse1 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5)))) (.cse2 (let ((.cse3 (select .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (= .cse0 |c_ULTIMATE.start_main_#t~mem9|) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem9|)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse2))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse1) (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-03 04:05:14,308 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse0 (let ((.cse6 (select .cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6)))) (.cse1 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5)))) (.cse2 (let ((.cse3 (select .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse1) (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse2)))))) is different from true [2021-11-03 04:05:16,353 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse0 (let ((.cse11 (select .cse7 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse11) ((_ extract 30 23) .cse11) ((_ extract 22 0) .cse11)))) (.cse8 (let ((.cse10 (select .cse4 |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0) (let ((.cse5 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse1 (let ((.cse6 (select .cse7 (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse5)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (let ((.cse3 (select .cse4 (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse5)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse2) (fp.sub c_currentRoundingMode .cse1 .cse2)))) (_ +zero 11 53))))) (= .cse8 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse8) (= (let ((.cse9 (select .cse7 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__i~0 (_ bv0 32))))) is different from false [2021-11-03 04:05:18,417 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse0 (let ((.cse11 (select .cse7 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse11) ((_ extract 30 23) .cse11) ((_ extract 22 0) .cse11)))) (.cse8 (let ((.cse10 (select .cse4 |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0) (let ((.cse5 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse1 (let ((.cse6 (select .cse7 (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse5)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (let ((.cse3 (select .cse4 (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse5)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse2) (fp.sub c_currentRoundingMode .cse1 .cse2)))) (_ +zero 11 53))))) (= .cse8 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse8) (= (let ((.cse9 (select .cse7 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__i~0 (_ bv0 32))))) is different from true [2021-11-03 04:05:21,685 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|)) (.cse6 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32))) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse1 (let ((.cse11 (select .cse8 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse11) ((_ extract 30 23) .cse11) ((_ extract 22 0) .cse11)))) (.cse0 (let ((.cse10 (select .cse8 (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse6)))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10)))) (.cse2 (let ((.cse9 (select .cse5 |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))))) (and (= |c_ULTIMATE.start_main_#t~mem10| .cse0) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1) (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse3 (let ((.cse4 (select .cse5 (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse6)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse3) (fp.sub c_currentRoundingMode .cse0 .cse3)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem10|))) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse2) (= (let ((.cse7 (select .cse8 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__i~0 (_ bv0 32))))) is different from true [2021-11-03 04:05:25,129 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|)) (.cse6 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse10 (select .cse2 (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse6)))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10)))) (.cse7 (let ((.cse9 (select .cse5 |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))))) (and (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0) (= (let ((.cse1 (select .cse2 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse3 (let ((.cse4 (select .cse5 (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse6)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse3) (fp.sub c_currentRoundingMode .cse0 .cse3)))) (_ +zero 11 53)) (= .cse7 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse7) (= (let ((.cse8 (select .cse2 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse8) ((_ extract 30 23) .cse8) ((_ extract 22 0) .cse8))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__i~0 (_ bv0 32))))) is different from true [2021-11-03 04:05:27,233 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__z~0) (_ +zero 11 53)) (exists ((v_arrayElimCell_1 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2)))) (and (= c_ULTIMATE.start_main_~main__z~0 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0))) (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (fp.leq ULTIMATE.start_main_~main__t~0 .cse1) (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse0))))) is different from false [2021-11-03 04:05:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:05:34,765 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-03 04:05:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:05:34,772 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:05:34,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:05:34,773 INFO L225 Difference]: With dead ends: 35 [2021-11-03 04:05:34,773 INFO L226 Difference]: Without dead ends: 30 [2021-11-03 04:05:34,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 95.1s TimeCoverageRelationStatistics Valid=63, Invalid=81, Unknown=30, NotChecked=528, Total=702 [2021-11-03 04:05:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-03 04:05:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2021-11-03 04:05:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 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 04:05:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2021-11-03 04:05:34,779 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 13 [2021-11-03 04:05:34,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:05:34,780 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-11-03 04:05:34,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:05:34,780 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2021-11-03 04:05:34,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:05:34,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:05:34,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:05:34,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:34,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:05:34,982 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:05:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:05:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2097179417, now seen corresponding path program 1 times [2021-11-03 04:05:34,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:05:34,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612859460] [2021-11-03 04:05:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:34,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:05:34,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:05:34,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:05:34,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:05:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:35,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:05:35,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:35,458 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 04:05:35,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:35,523 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 04:05:35,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:05:35,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612859460] [2021-11-03 04:05:35,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612859460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:05:35,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:05:35,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:05:35,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654840555] [2021-11-03 04:05:35,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:05:35,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:05:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:05:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:05:35,526 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:05:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:05:35,557 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-11-03 04:05:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:05:35,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:05:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:05:35,559 INFO L225 Difference]: With dead ends: 35 [2021-11-03 04:05:35,560 INFO L226 Difference]: Without dead ends: 20 [2021-11-03 04:05:35,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 04:05:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-03 04:05:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-03 04:05:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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 04:05:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-03 04:05:35,566 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2021-11-03 04:05:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:05:35,567 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-03 04:05:35,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:05:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-03 04:05:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:05:35,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:05:35,568 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:05:35,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:35,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:05:35,782 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:05:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:05:35,782 INFO L85 PathProgramCache]: Analyzing trace with hash -202431920, now seen corresponding path program 1 times [2021-11-03 04:05:35,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:05:35,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607865200] [2021-11-03 04:05:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:35,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:05:35,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:05:35,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:05:35,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d490f8-7edd-42af-8531-989b99e21ada/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:05:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:37,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 04:05:37,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:40,129 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:05:40,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 178 treesize of output 86 [2021-11-03 04:06:44,840 WARN L207 SmtUtils]: Spent 13.75 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2021-11-03 04:07:21,443 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_7 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_7) ((_ extract 30 23) v_arrayElimCell_7) ((_ extract 22 0) v_arrayElimCell_7)))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)) c_ULTIMATE.start_main_~main__z~0) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (fp.leq ULTIMATE.start_main_~main__t~0 .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__z~0) (_ +zero 11 53))) is different from false [2021-11-03 04:08:35,473 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_7 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_7) ((_ extract 30 23) v_arrayElimCell_7) ((_ extract 22 0) v_arrayElimCell_7))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8)))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse2 .cse0))))) (and (= .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (fp.geq .cse1 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~main__t~0 .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))))))) is different from false [2021-11-03 04:08:37,502 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_7 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_7) ((_ extract 30 23) v_arrayElimCell_7) ((_ extract 22 0) v_arrayElimCell_7))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8)))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse2 .cse0))))) (and (= .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (fp.geq .cse1 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~main__t~0 .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))))))) is different from true