./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/loop-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:16,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:16,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:16,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:16,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:16,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:16,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:16,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:16,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:16,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:16,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:16,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:16,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:16,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:16,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:16,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:16,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:16,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:16,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:16,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:16,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:16,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:16,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:16,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:16,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:16,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:16,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:16,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:16,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:16,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:16,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:16,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:16,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:16,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:16,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:16,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:16,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:16,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:16,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:16,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:16,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:16,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:16:16,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:16,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:16,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:16,694 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:16,694 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:16,694 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:16,695 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:16:16,695 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:16,695 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:16,696 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:16:16,696 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:16:16,697 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:16,697 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:16:16,697 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:16:16,698 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:16:16,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:16,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:16:16,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:16:16,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:16:16,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:16,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:16,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:16,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:16,701 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:16,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:16:16,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:16,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:16,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:16,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:16,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:16,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:16,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:16,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:16,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:16,703 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:16:16,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:16:16,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:16,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:16,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:16,704 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_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-11-07 02:16:16,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:17,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:17,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:17,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:17,035 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:17,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-11-07 02:16:17,134 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data/e3c982365/ab0c7b2bf29a48d594248ced3f460941/FLAG7c4264c3b [2021-11-07 02:16:17,634 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:17,635 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/sv-benchmarks/c/float-benchs/loop-1.c [2021-11-07 02:16:17,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data/e3c982365/ab0c7b2bf29a48d594248ced3f460941/FLAG7c4264c3b [2021-11-07 02:16:18,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data/e3c982365/ab0c7b2bf29a48d594248ced3f460941 [2021-11-07 02:16:18,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:18,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:18,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:18,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:18,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:18,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b516600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18, skipping insertion in model container [2021-11-07 02:16:18,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:18,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:18,311 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_b96b22c0-cd76-486f-9153-21fb592d93e1/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-07 02:16:18,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:18,345 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:16:18,357 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_b96b22c0-cd76-486f-9153-21fb592d93e1/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-07 02:16:18,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:18,374 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:16:18,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18 WrapperNode [2021-11-07 02:16:18,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:18,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:18,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:16:18,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:16:18,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:18,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:16:18,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:16:18,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:16:18,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:16:18,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:16:18,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:16:18,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:16:18,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (1/1) ... [2021-11-07 02:16:18,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:18,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:18,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:16:18,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:16:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:16:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:16:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:16:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:16:18,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:16:18,831 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 02:16:18,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:18 BoogieIcfgContainer [2021-11-07 02:16:18,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:16:18,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:16:18,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:16:18,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:16:18,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:18" (1/3) ... [2021-11-07 02:16:18,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536b9efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:18, skipping insertion in model container [2021-11-07 02:16:18,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:18" (2/3) ... [2021-11-07 02:16:18,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536b9efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:18, skipping insertion in model container [2021-11-07 02:16:18,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:18" (3/3) ... [2021-11-07 02:16:18,840 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-11-07 02:16:18,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:16:18,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:16:18,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:16:18,913 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:16:18,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:16:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 02:16:18,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:18,931 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 02:16:18,931 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:16:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:18,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2021-11-07 02:16:18,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:16:18,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716785596] [2021-11-07 02:16:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:18,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:16:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:16:19,044 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:16:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:16:19,080 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 02:16:19,082 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:16:19,083 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:16:19,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:16:19,089 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 02:16:19,092 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:16:19,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:16:19 BoogieIcfgContainer [2021-11-07 02:16:19,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:16:19,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:16:19,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:16:19,109 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:16:19,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:18" (3/4) ... [2021-11-07 02:16:19,113 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 02:16:19,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:16:19,115 INFO L168 Benchmark]: Toolchain (without parser) took 1022.53 ms. Allocated memory is still 98.6 MB. Free memory was 55.7 MB in the beginning and 46.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:19,116 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 72.5 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:16:19,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.76 ms. Allocated memory is still 98.6 MB. Free memory was 55.5 MB in the beginning and 72.4 MB in the end (delta: -16.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:19,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.53 ms. Allocated memory is still 98.6 MB. Free memory was 72.4 MB in the beginning and 70.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:19,119 INFO L168 Benchmark]: Boogie Preprocessor took 31.15 ms. Allocated memory is still 98.6 MB. Free memory was 70.8 MB in the beginning and 69.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:19,119 INFO L168 Benchmark]: RCFGBuilder took 389.21 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 59.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:19,120 INFO L168 Benchmark]: TraceAbstraction took 273.97 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 46.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:19,121 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 98.6 MB. Free memory was 46.5 MB in the beginning and 46.0 MB in the end (delta: 473.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:16:19,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 72.5 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.76 ms. Allocated memory is still 98.6 MB. Free memory was 55.5 MB in the beginning and 72.4 MB in the end (delta: -16.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.53 ms. Allocated memory is still 98.6 MB. Free memory was 72.4 MB in the beginning and 70.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.15 ms. Allocated memory is still 98.6 MB. Free memory was 70.8 MB in the beginning and 69.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 389.21 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 59.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 273.97 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 46.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.25 ms. Allocated memory is still 98.6 MB. Free memory was 46.5 MB in the beginning and 46.0 MB in the end (delta: 473.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4]: 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 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 20. Possible FailurePath: [L8] float x, y, z; [L10] x = 1.f [L11] y = 1e7 [L12] z = 42.f [L14] COND FALSE !(x < y) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-11-07 02:16:19,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:21,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:21,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:21,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:21,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:21,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:21,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:21,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:21,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:21,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:21,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:21,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:21,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:21,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:21,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:21,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:21,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:21,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:21,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:21,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:21,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:21,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:21,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:21,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:21,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:21,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:21,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:21,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:21,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:21,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:21,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:21,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:21,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:21,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:21,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:21,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:21,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:21,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:21,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:21,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:21,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:21,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:16:21,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:21,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:21,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:21,844 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:21,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:21,845 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:21,846 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:21,846 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:21,846 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:21,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:21,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:16:21,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:16:21,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:21,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:21,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:21,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:21,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:21,849 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:16:21,849 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:16:21,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:16:21,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:21,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:21,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:21,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:21,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:16:21,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:21,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:21,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:21,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:21,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:21,852 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:16:21,853 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:21,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:21,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:21,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:21,854 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_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-11-07 02:16:22,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:22,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:22,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:22,335 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:22,336 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:22,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-11-07 02:16:22,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data/edb754589/71298ca9bf7b4532b3b11c12f99a1f2f/FLAG1815fa47d [2021-11-07 02:16:22,980 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:22,981 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/sv-benchmarks/c/float-benchs/loop-1.c [2021-11-07 02:16:22,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data/edb754589/71298ca9bf7b4532b3b11c12f99a1f2f/FLAG1815fa47d [2021-11-07 02:16:23,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/data/edb754589/71298ca9bf7b4532b3b11c12f99a1f2f [2021-11-07 02:16:23,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:23,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:23,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:23,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:23,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:23,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600ebbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23, skipping insertion in model container [2021-11-07 02:16:23,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:23,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:23,506 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_b96b22c0-cd76-486f-9153-21fb592d93e1/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-07 02:16:23,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:23,535 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:16:23,549 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_b96b22c0-cd76-486f-9153-21fb592d93e1/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-07 02:16:23,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:23,570 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:16:23,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23 WrapperNode [2021-11-07 02:16:23,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:23,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:23,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:16:23,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:16:23,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:23,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:16:23,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:16:23,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:16:23,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:16:23,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:16:23,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:16:23,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:16:23,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (1/1) ... [2021-11-07 02:16:23,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:23,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:23,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:16:23,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:16:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:16:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:16:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:16:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:16:24,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:16:24,498 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 02:16:24,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:24 BoogieIcfgContainer [2021-11-07 02:16:24,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:16:24,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:16:24,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:16:24,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:16:24,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:23" (1/3) ... [2021-11-07 02:16:24,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307afd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:24, skipping insertion in model container [2021-11-07 02:16:24,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:23" (2/3) ... [2021-11-07 02:16:24,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307afd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:24, skipping insertion in model container [2021-11-07 02:16:24,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:24" (3/3) ... [2021-11-07 02:16:24,509 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-11-07 02:16:24,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:16:24,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:16:24,577 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:16:24,588 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:16:24,589 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:16:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) [2021-11-07 02:16:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:16:24,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:24,638 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:16:24,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:16:24,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-07 02:16:24,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:24,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546806036] [2021-11-07 02:16:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:24,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:24,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:24,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:24,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:16:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:24,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:16:24,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:24,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:25,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:25,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546806036] [2021-11-07 02:16:25,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546806036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:25,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:25,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:16:25,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418714509] [2021-11-07 02:16:25,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:16:25,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:25,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:16:25,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:16:25,090 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:25,779 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-11-07 02:16:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:16:25,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 02:16:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:25,791 INFO L225 Difference]: With dead ends: 21 [2021-11-07 02:16:25,791 INFO L226 Difference]: Without dead ends: 9 [2021-11-07 02:16:25,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:16:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-07 02:16:25,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-07 02:16:25,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:25,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-07 02:16:25,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-07 02:16:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:25,825 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-07 02:16:25,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:25,826 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-07 02:16:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:16:25,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:25,827 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:25,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:16:26,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:26,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:16:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-11-07 02:16:26,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:26,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186359585] [2021-11-07 02:16:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:26,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:26,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:26,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:26,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:16:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:26,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:16:26,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:26,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:42,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:42,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186359585] [2021-11-07 02:16:42,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186359585] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:42,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1059216104] [2021-11-07 02:16:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:42,820 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:42,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:16:42,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:16:42,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 02:16:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:43,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:16:43,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:43,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:44,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1059216104] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:44,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726842382] [2021-11-07 02:16:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:44,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:16:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:44,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:16:44,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 02:16:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:46,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:16:46,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:49,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:17:22,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726842382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:17:22,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:17:22,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 17 [2021-11-07 02:17:22,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358027020] [2021-11-07 02:17:22,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 02:17:22,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 02:17:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=213, Unknown=4, NotChecked=0, Total=272 [2021-11-07 02:17:22,552 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:30,719 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse5))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse5)) (.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse5)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.lt .cse3 .cse4) (fp.lt (fp.add c_currentRoundingMode .cse3 .cse5) (fp.sub c_currentRoundingMode .cse4 .cse5)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1))))) is different from false [2021-11-07 02:17:32,748 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse5))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse5)) (.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse5)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.lt .cse3 .cse4) (fp.lt (fp.add c_currentRoundingMode .cse3 .cse5) (fp.sub c_currentRoundingMode .cse4 .cse5)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1))))) is different from true [2021-11-07 02:18:00,922 WARN L207 SmtUtils]: Spent 18.21 s on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2021-11-07 02:18:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:17,488 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-07 02:18:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:18:17,489 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 02:18:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:17,490 INFO L225 Difference]: With dead ends: 17 [2021-11-07 02:18:17,490 INFO L226 Difference]: Without dead ends: 13 [2021-11-07 02:18:17,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 86.0s TimeCoverageRelationStatistics Valid=107, Invalid=352, Unknown=7, NotChecked=40, Total=506 [2021-11-07 02:18:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-07 02:18:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-07 02:18:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2021-11-07 02:18:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-07 02:18:17,498 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-11-07 02:18:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:17,498 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-07 02:18:17,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-07 02:18:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 02:18:17,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:17,500 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-11-07 02:18:17,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:17,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:17,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:18,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:18,107 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 2 times [2021-11-07 02:18:18,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:18,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856680284] [2021-11-07 02:18:18,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:18:18,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:18,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:18,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:18,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:18:18,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:18:18,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:18:18,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 02:18:18,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:21,620 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:21,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:13,068 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-07 02:19:58,222 WARN L207 SmtUtils]: Spent 8.44 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 02:21:04,408 WARN L207 SmtUtils]: Spent 9.48 s on a formula simplification that was a NOOP. DAG size: 16 [2021-11-07 02:21:14,259 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from false [2021-11-07 02:21:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 10 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-07 02:21:15,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:15,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856680284] [2021-11-07 02:21:15,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856680284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:15,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [191893063] [2021-11-07 02:21:15,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:21:15,625 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:15,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:15,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:15,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:21:16,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:21:16,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:21:16,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 02:21:16,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:03,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:59,942 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0))) is different from false [2021-11-07 02:24:01,985 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0))) is different from true [2021-11-07 02:24:08,106 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0) .cse0))) is different from false [2021-11-07 02:24:10,138 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0) .cse0))) is different from true [2021-11-07 02:24:16,264 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) is different from false [2021-11-07 02:24:18,304 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) is different from true [2021-11-07 02:24:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-07 02:24:18,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [191893063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:24:18,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170710261] [2021-11-07 02:24:18,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:24:18,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:24:18,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:24:18,325 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:24:18,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 02:24:27,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:24:27,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:24:27,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 02:24:27,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:35,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:53,428 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) (forall ((ULTIMATE.start_main_~y~0 (_ FloatingPoint 8 24))) (not (fp.lt c_ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))) is different from true [2021-11-07 02:25:07,839 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) v_ULTIMATE.start_main_~y~0_51))) (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24))))) is different from true [2021-11-07 02:25:29,927 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) (not (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse1))) (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) .cse2)) v_ULTIMATE.start_main_~y~0_51))))) is different from false [2021-11-07 02:25:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-07 02:25:31,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170710261] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:25:31,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:25:31,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9, 9, 10, 10] total 39 [2021-11-07 02:25:31,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332302018] [2021-11-07 02:25:31,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-07 02:25:31,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-07 02:25:31,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=753, Unknown=74, NotChecked=462, Total=1482 [2021-11-07 02:25:31,962 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 39 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:53,484 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse6 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) (let ((.cse1 (fp.geq .cse6 (_ +zero 8 24))) (.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0)) (.cse2 (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse6) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) (and (= c_ULTIMATE.start_main_~x~0 .cse0) (or (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (and .cse1 .cse2) (not (fp.lt .cse3 .cse4)) (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5) .cse5)) v_ULTIMATE.start_main_~y~0_51)))) (= c_ULTIMATE.start_main_~z~0 ((_ to_fp 8 24) c_currentRoundingMode 42.0)) .cse1 (= ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 10000000.0)) c_ULTIMATE.start_main_~y~0) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 .cse0) .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse4 .cse0) .cse0) .cse0) .cse0) .cse0)) .cse2 (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-11-07 02:25:55,546 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (or (forall ((v_ULTIMATE.start_main_~y~0_51 (_ FloatingPoint 8 24))) (not (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) v_ULTIMATE.start_main_~y~0_51))) (not (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24))))) (= c_ULTIMATE.start_main_~x~0 (fp.add c_currentRoundingMode .cse1 .cse1)) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1) .cse1) .cse1) .cse1) .cse1) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse1) .cse1) .cse1) .cse1) .cse1)) (= c_ULTIMATE.start_main_~z~0 (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 42.0) .cse1)) (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 10000000.0)) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-07 02:25:57,599 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_main_~x~0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 .cse0) .cse0)) (fp.lt (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse0) .cse0) .cse0) .cse0)) (or (let ((.cse1 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse0) .cse0) .cse0) .cse0))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse1) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse1 (_ +zero 8 24)))) (forall ((ULTIMATE.start_main_~y~0 (_ FloatingPoint 8 24))) (not (fp.lt c_ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))) (= c_ULTIMATE.start_main_~z~0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 42.0) .cse0) .cse0)) (= (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 10000000.0)) .cse0) .cse0) c_ULTIMATE.start_main_~y~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-07 02:26:14,609 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse5))) (let ((.cse7 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse3 (fp.add c_currentRoundingMode .cse7 .cse5))) (let ((.cse1 (fp.add c_currentRoundingMode .cse3 .cse5)) (.cse9 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse5)) (.cse8 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse8 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse9 .cse5)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (.cse10 (fp.add c_currentRoundingMode .cse1 .cse5))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse2) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse2) (fp.geq .cse3 (_ +zero 8 24)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (fp.geq .cse7 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse2) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse7) .cse2) (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse8 .cse9) (fp.lt .cse4 .cse6) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse10) .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse2) (fp.geq .cse10 (_ +zero 8 24))))))))) is different from false [2021-11-07 02:26:16,668 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse5))) (let ((.cse7 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse3 (fp.add c_currentRoundingMode .cse7 .cse5))) (let ((.cse1 (fp.add c_currentRoundingMode .cse3 .cse5)) (.cse9 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse5)) (.cse8 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse8 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse9 .cse5)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (.cse10 (fp.add c_currentRoundingMode .cse1 .cse5))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse2) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse2) (fp.geq .cse3 (_ +zero 8 24)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (fp.geq .cse7 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse2) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse7) .cse2) (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse8 .cse9) (fp.lt .cse4 .cse6) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse10) .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse2) (fp.geq .cse10 (_ +zero 8 24))))))))) is different from true [2021-11-07 02:26:18,719 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse7))) (let ((.cse4 (fp.add c_currentRoundingMode .cse0 .cse7))) (let ((.cse3 (fp.add c_currentRoundingMode .cse4 .cse7))) (let ((.cse1 (fp.add c_currentRoundingMode .cse3 .cse7)) (.cse5 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse7)) (.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse7)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse2) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse2) (fp.geq .cse3 (_ +zero 8 24)) (fp.geq .cse4 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse2) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse4) .cse2) (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse5 .cse6) (fp.lt (fp.add c_currentRoundingMode .cse5 .cse7) (fp.sub c_currentRoundingMode .cse6 .cse7)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse2))))))) is different from false [2021-11-07 02:26:20,767 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse7))) (let ((.cse4 (fp.add c_currentRoundingMode .cse0 .cse7))) (let ((.cse3 (fp.add c_currentRoundingMode .cse4 .cse7))) (let ((.cse1 (fp.add c_currentRoundingMode .cse3 .cse7)) (.cse5 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse7)) (.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse7)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse1) .cse2) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse2) (fp.geq .cse3 (_ +zero 8 24)) (fp.geq .cse4 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse2) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse4) .cse2) (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse5 .cse6) (fp.lt (fp.add c_currentRoundingMode .cse5 .cse7) (fp.sub c_currentRoundingMode .cse6 .cse7)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse2))))))) is different from true [2021-11-07 02:26:22,805 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse4))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse3 .cse4)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.geq .cse3 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1) (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse4) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse4)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1)))))) is different from false [2021-11-07 02:26:24,843 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse4))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse3 .cse4)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.geq .cse3 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1) (fp.lt (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse4) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~y~0 .cse4)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1)))))) is different from true [2021-11-07 02:26:58,468 WARN L207 SmtUtils]: Spent 14.30 s on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2021-11-07 02:28:35,083 WARN L207 SmtUtils]: Spent 6.77 s on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2021-11-07 02:29:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:29:30,712 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-11-07 02:29:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 02:29:30,713 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 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 [2021-11-07 02:29:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:29:30,713 INFO L225 Difference]: With dead ends: 28 [2021-11-07 02:29:30,713 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 02:29:30,716 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 448.7s TimeCoverageRelationStatistics Valid=308, Invalid=1199, Unknown=105, NotChecked=1144, Total=2756 [2021-11-07 02:29:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 02:29:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-07 02:29:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 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) [2021-11-07 02:29:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-07 02:29:30,722 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2021-11-07 02:29:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:29:30,723 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-07 02:29:30,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-07 02:29:30,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 02:29:30,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:29:30,724 INFO L513 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1] [2021-11-07 02:29:30,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:30,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-07 02:29:31,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 02:29:31,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:29:31,339 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:29:31,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:29:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash -764299568, now seen corresponding path program 3 times [2021-11-07 02:29:31,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:29:31,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769518418] [2021-11-07 02:29:31,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:29:31,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:29:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:29:31,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:29:31,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96b22c0-cd76-486f-9153-21fb592d93e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:29:33,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 02:29:33,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:29:33,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 02:29:33,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:30:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:30:21,888 INFO L328 TraceCheckSpWp]: Computing backward predicates...