./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:37:27,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:37:27,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:37:27,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:37:27,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:37:27,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:37:27,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:37:27,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:37:27,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:37:27,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:37:27,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:37:27,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:37:27,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:37:27,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:37:27,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:37:27,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:37:27,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:37:27,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:37:27,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:37:27,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:37:27,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:37:27,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:37:27,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:37:27,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:37:27,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:37:27,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:37:27,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:37:27,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:37:27,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:37:27,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:37:27,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:37:27,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:37:27,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:37:27,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:37:27,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:37:27,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:37:27,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:37:27,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:37:27,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:37:27,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:37:27,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:37:27,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:37:27,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:37:27,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:37:27,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:37:27,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:37:27,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:37:27,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:37:27,218 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:37:27,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:37:27,219 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:37:27,219 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:37:27,220 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:37:27,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:37:27,220 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:37:27,221 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:37:27,221 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:37:27,221 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:37:27,222 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:37:27,222 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:37:27,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:37:27,223 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:37:27,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:37:27,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:37:27,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:37:27,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:37:27,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:37:27,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:37:27,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:37:27,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:37:27,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:37:27,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:37:27,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:37:27,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:37:27,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:27,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:37:27,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:37:27,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:37:27,229 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:37:27,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:37:27,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:37:27,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:37:27,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:37:27,230 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_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-11-21 01:37:27,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:37:27,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:37:27,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:37:27,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:37:27,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:37:27,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-11-21 01:37:27,717 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data/3663c9d45/20aed2b23dc14cb6a69c1ab4ff44bdff/FLAG8b2f44455 [2021-11-21 01:37:28,272 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:37:28,273 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/sv-benchmarks/c/float-benchs/loop-1.c [2021-11-21 01:37:28,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data/3663c9d45/20aed2b23dc14cb6a69c1ab4ff44bdff/FLAG8b2f44455 [2021-11-21 01:37:28,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data/3663c9d45/20aed2b23dc14cb6a69c1ab4ff44bdff [2021-11-21 01:37:28,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:37:28,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:37:28,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:28,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:37:28,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:37:28,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:28,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e794818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28, skipping insertion in model container [2021-11-21 01:37:28,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:28,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:37:28,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:37:28,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-21 01:37:28,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:28,931 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:37:28,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-21 01:37:28,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:28,983 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:37:28,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28 WrapperNode [2021-11-21 01:37:28,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:28,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:28,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:37:28,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:37:28,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,035 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2021-11-21 01:37:29,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:29,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:37:29,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:37:29,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:37:29,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:37:29,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:37:29,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:37:29,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:37:29,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:29,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:29,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:29,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:37:29,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:37:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:37:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:37:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:37:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:37:29,281 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:37:29,283 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:37:29,413 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:37:29,437 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:37:29,437 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:37:29,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:29 BoogieIcfgContainer [2021-11-21 01:37:29,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:37:29,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:37:29,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:37:29,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:37:29,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:37:28" (1/3) ... [2021-11-21 01:37:29,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0c8df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:29, skipping insertion in model container [2021-11-21 01:37:29,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28" (2/3) ... [2021-11-21 01:37:29,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0c8df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:29, skipping insertion in model container [2021-11-21 01:37:29,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:29" (3/3) ... [2021-11-21 01:37:29,464 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-11-21 01:37:29,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:37:29,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:37:29,560 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:37:29,570 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:37:29,571 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:37:29,589 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) [2021-11-21 01:37:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:37:29,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:29,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:37:29,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2021-11-21 01:37:29,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:29,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599987235] [2021-11-21 01:37:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:29,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:37:29,764 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:37:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:37:29,806 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:37:29,808 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:37:29,810 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:37:29,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:37:29,819 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:37:29,823 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:37:29,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:37:29 BoogieIcfgContainer [2021-11-21 01:37:29,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:37:29,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:37:29,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:37:29,849 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:37:29,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:29" (3/4) ... [2021-11-21 01:37:29,853 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:37:29,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:37:29,855 INFO L158 Benchmark]: Toolchain (without parser) took 1221.65ms. Allocated memory is still 92.3MB. Free memory was 55.5MB in the beginning and 44.8MB in the end (delta: 10.7MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-11-21 01:37:29,856 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:37:29,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.45ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 69.3MB in the end (delta: -14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:37:29,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.72ms. Allocated memory is still 92.3MB. Free memory was 69.3MB in the beginning and 68.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:37:29,861 INFO L158 Benchmark]: Boogie Preprocessor took 40.32ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 67.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:37:29,869 INFO L158 Benchmark]: RCFGBuilder took 361.94ms. Allocated memory is still 92.3MB. Free memory was 67.1MB in the beginning and 57.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:37:29,870 INFO L158 Benchmark]: TraceAbstraction took 404.73ms. Allocated memory is still 92.3MB. Free memory was 57.4MB in the beginning and 45.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:37:29,872 INFO L158 Benchmark]: Witness Printer took 5.41ms. Allocated memory is still 92.3MB. Free memory was 45.2MB in the beginning and 44.8MB in the end (delta: 368.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:37:29,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.45ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 69.3MB in the end (delta: -14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.72ms. Allocated memory is still 92.3MB. Free memory was 69.3MB in the beginning and 68.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.32ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 67.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.94ms. Allocated memory is still 92.3MB. Free memory was 67.1MB in the beginning and 57.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 404.73ms. Allocated memory is still 92.3MB. Free memory was 57.4MB in the beginning and 45.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.41ms. Allocated memory is still 92.3MB. Free memory was 45.2MB in the beginning and 44.8MB in the end (delta: 368.3kB). There was no memory consumed. Max. memory is 16.1GB. * 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 VAL [x=1, y=10000000, z=42] [L14] COND FALSE !(x < y) [L20] CALL __VERIFIER_assert(z >= 0.f && z <= 1e8) [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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: , 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 [2021-11-21 01:37:29,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/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_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:37:33,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:37:33,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:37:33,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:37:33,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:37:33,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:37:33,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:37:33,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:37:33,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:37:33,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:37:33,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:37:33,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:37:33,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:37:33,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:37:33,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:37:33,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:37:33,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:37:33,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:37:33,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:37:33,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:37:33,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:37:33,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:37:33,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:37:33,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:37:33,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:37:33,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:37:33,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:37:33,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:37:33,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:37:33,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:37:33,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:37:33,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:37:33,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:37:33,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:37:33,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:37:33,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:37:33,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:37:33,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:37:33,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:37:33,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:37:33,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:37:33,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:37:33,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:37:33,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:37:33,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:37:33,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:37:33,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:37:33,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:37:33,345 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:37:33,345 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:37:33,346 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:37:33,346 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:37:33,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:37:33,348 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:37:33,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:37:33,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:37:33,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:37:33,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:37:33,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:37:33,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:37:33,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:37:33,352 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:37:33,352 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:37:33,352 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:37:33,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:37:33,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:37:33,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:37:33,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:37:33,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:37:33,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:37:33,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:33,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:37:33,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:37:33,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:37:33,356 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:37:33,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:33,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:37:33,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:37:33,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:37:33,358 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_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-11-21 01:37:33,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:37:33,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:37:33,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:37:33,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:37:33,929 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:37:33,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-11-21 01:37:34,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data/f3bfa3078/f0455153e351402d9f2f581f5088449d/FLAGad609f392 [2021-11-21 01:37:34,724 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:37:34,725 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/sv-benchmarks/c/float-benchs/loop-1.c [2021-11-21 01:37:34,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data/f3bfa3078/f0455153e351402d9f2f581f5088449d/FLAGad609f392 [2021-11-21 01:37:35,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/data/f3bfa3078/f0455153e351402d9f2f581f5088449d [2021-11-21 01:37:35,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:37:35,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:37:35,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:35,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:37:35,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:37:35,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b20093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35, skipping insertion in model container [2021-11-21 01:37:35,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:37:35,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:37:35,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-21 01:37:35,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:35,352 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:37:35,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-21 01:37:35,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:35,402 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:37:35,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35 WrapperNode [2021-11-21 01:37:35,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:35,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:35,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:37:35,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:37:35,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,454 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2021-11-21 01:37:35,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:35,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:37:35,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:37:35,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:37:35,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:37:35,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:37:35,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:37:35,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:37:35,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (1/1) ... [2021-11-21 01:37:35,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:35,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:35,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:37:35,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:37:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:37:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:37:35,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:37:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:37:35,761 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:37:35,763 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:37:36,542 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:37:36,549 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:37:36,550 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:37:36,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:36 BoogieIcfgContainer [2021-11-21 01:37:36,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:37:36,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:37:36,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:37:36,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:37:36,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:37:35" (1/3) ... [2021-11-21 01:37:36,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1ac7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:36, skipping insertion in model container [2021-11-21 01:37:36,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:35" (2/3) ... [2021-11-21 01:37:36,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1ac7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:36, skipping insertion in model container [2021-11-21 01:37:36,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:36" (3/3) ... [2021-11-21 01:37:36,563 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-11-21 01:37:36,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:37:36,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:37:36,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:37:36,641 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:37:36,642 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:37:36,659 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) [2021-11-21 01:37:36,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:37:36,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:36,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:37:36,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:36,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:36,675 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-21 01:37:36,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:36,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799117163] [2021-11-21 01:37:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:36,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:36,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:36,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:36,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:37:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:36,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:37:36,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:37,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:37,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:37,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799117163] [2021-11-21 01:37:37,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799117163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:37,116 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:37,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:37:37,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894143816] [2021-11-21 01:37:37,120 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:37,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:37,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:37,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:37,180 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) [2021-11-21 01:37:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:37,212 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-11-21 01:37:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:37:37,216 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 [2021-11-21 01:37:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:37,235 INFO L225 Difference]: With dead ends: 20 [2021-11-21 01:37:37,236 INFO L226 Difference]: Without dead ends: 8 [2021-11-21 01:37:37,244 INFO L932 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 [2021-11-21 01:37:37,253 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:37,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2021-11-21 01:37:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-21 01:37:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-21 01:37:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-21 01:37:37,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-11-21 01:37:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:37,304 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-21 01:37:37,304 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) [2021-11-21 01:37:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-21 01:37:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:37:37,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:37,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:37,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:37,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:37,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:37,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-11-21 01:37:37,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:37,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18570419] [2021-11-21 01:37:37,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:37,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:37,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:37,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:37,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:37:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:37,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:37:37,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:37,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:42,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:42,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18570419] [2021-11-21 01:37:42,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18570419] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:42,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [128220378] [2021-11-21 01:37:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:42,152 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:42,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:37:42,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:37:42,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-21 01:37:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:42,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:37:42,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:42,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:43,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [128220378] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:43,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61019251] [2021-11-21 01:37:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:43,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:43,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:43,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:43,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:37:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:43,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:37:43,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:44,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:56,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61019251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:56,037 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:37:56,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 14 [2021-11-21 01:37:56,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700832341] [2021-11-21 01:37:56,039 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:37:56,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:37:56,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:56,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:37:56,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=141, Unknown=1, NotChecked=0, Total=182 [2021-11-21 01:37:56,042 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:38:27,505 WARN L227 SmtUtils]: Spent 18.90s on a formula simplification. DAG size of input: 23 DAG size of output: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:38:29,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:30,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:51,883 WARN L227 SmtUtils]: Spent 13.19s on a formula simplification. DAG size of input: 20 DAG size of output: 19 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:38:53,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:55,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:57,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:05,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:07,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:09,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:10,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:22,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:31,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:33,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:34,925 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-11-21 01:39:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:39:34,936 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:39:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:34,936 INFO L225 Difference]: With dead ends: 18 [2021-11-21 01:39:34,936 INFO L226 Difference]: Without dead ends: 12 [2021-11-21 01:39:34,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 84.5s TimeCoverageRelationStatistics Valid=102, Invalid=311, Unknown=7, NotChecked=0, Total=420 [2021-11-21 01:39:34,940 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 15 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:34,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 26 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 29.3s Time] [2021-11-21 01:39:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-21 01:39:34,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-21 01:39:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:39:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-21 01:39:34,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-11-21 01:39:34,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:34,947 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-21 01:39:34,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:39:34,947 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-21 01:39:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:39:34,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:34,949 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:34,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 01:39:35,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-11-21 01:39:35,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:39:35,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:35,560 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:35,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 2 times [2021-11-21 01:39:35,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:39:35,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847063370] [2021-11-21 01:39:35,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:39:35,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:39:35,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:39:35,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:39:35,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:39:36,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:39:36,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:39:36,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-21 01:39:36,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:39:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:39:39,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:11,425 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 |c_ULTIMATE.start_main_~x~0#1| .cse0) .cse0) .cse0) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse0) .cse0) .cse0))) is different from true [2021-11-21 01:40:17,539 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#1| .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#1| .cse0) .cse0) .cse0) .cse0))) is different from false [2021-11-21 01:40:19,568 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#1| .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#1| .cse0) .cse0) .cse0) .cse0))) is different from true [2021-11-21 01:40:25,686 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#1| .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#1| .cse0) .cse0) .cse0) .cse0) .cse0))) is different from false [2021-11-21 01:40:27,726 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#1| .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#1| .cse0) .cse0) .cse0) .cse0) .cse0))) is different from true [2021-11-21 01:40:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 12 not checked. [2021-11-21 01:40:27,743 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:27,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847063370] [2021-11-21 01:40:27,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847063370] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:40:27,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [648224590] [2021-11-21 01:40:27,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:40:27,744 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:40:27,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:40:27,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:40:27,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-21 01:40:28,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:40:28,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:40:28,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-21 01:40:28,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:28,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 12 not checked. [2021-11-21 01:40:43,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [648224590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:40:43,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169508705] [2021-11-21 01:40:43,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:40:43,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:43,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:40:43,816 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:40:43,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:40:48,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:40:48,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:40:48,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-21 01:40:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:49,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:41:07,379 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1)) (.cse2 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse1))) (or (fp.lt (fp.add c_currentRoundingMode .cse0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse0 .cse2))))) is different from true [2021-11-21 01:41:24,015 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse2)) (.cse3 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse2))) (let ((.cse0 (fp.add c_currentRoundingMode .cse3 .cse2)) (.cse1 (fp.sub c_currentRoundingMode .cse4 .cse2))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse2) (fp.sub c_currentRoundingMode .cse1 .cse2)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse3 .cse4)))))) is different from false [2021-11-21 01:41:26,045 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse2)) (.cse3 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse2))) (let ((.cse0 (fp.add c_currentRoundingMode .cse3 .cse2)) (.cse1 (fp.sub c_currentRoundingMode .cse4 .cse2))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse2) (fp.sub c_currentRoundingMode .cse1 .cse2)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse3 .cse4)))))) is different from true [2021-11-21 01:41:48,684 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse4)) (.cse6 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse4))) (let ((.cse1 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse0 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse4)) (.cse3 (fp.sub c_currentRoundingMode .cse1 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse4) (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse5 .cse6))))))) is different from false [2021-11-21 01:41:50,723 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse4)) (.cse6 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse4))) (let ((.cse1 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse0 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse4)) (.cse3 (fp.sub c_currentRoundingMode .cse1 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse4) (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse5 .cse6))))))) is different from true [2021-11-21 01:42:17,572 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse8 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse5)) (.cse7 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse5))) (let ((.cse0 (fp.add c_currentRoundingMode .cse7 .cse5)) (.cse1 (fp.sub c_currentRoundingMode .cse8 .cse5))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse1 .cse5)) (.cse2 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse5))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (not (fp.lt .cse4 .cse6)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse7 .cse8)))))))) is different from false [2021-11-21 01:42:19,618 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse8 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse5)) (.cse7 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse5))) (let ((.cse0 (fp.add c_currentRoundingMode .cse7 .cse5)) (.cse1 (fp.sub c_currentRoundingMode .cse8 .cse5))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse1 .cse5)) (.cse2 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse5))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (not (fp.lt .cse4 .cse6)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse7 .cse8)))))))) is different from true [2021-11-21 01:42:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2021-11-21 01:42:19,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169508705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:42:19,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:42:19,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-21 01:42:19,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683088162] [2021-11-21 01:42:19,668 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:42:19,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 01:42:19,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:42:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 01:42:19,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=100, Unknown=17, NotChecked=196, Total=380 [2021-11-21 01:42:19,671 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2021-11-21 01:42:21,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:22,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:25,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:27,615 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse9 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse8 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse9)) (.cse7 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse9))) (let ((.cse1 (fp.add c_currentRoundingMode .cse7 .cse9)) (.cse2 (fp.sub c_currentRoundingMode .cse8 .cse9))) (let ((.cse4 (fp.sub c_currentRoundingMode .cse2 .cse9)) (.cse3 (fp.add c_currentRoundingMode .cse1 .cse9))) (let ((.cse5 (fp.add c_currentRoundingMode .cse3 .cse9)) (.cse6 (fp.sub c_currentRoundingMode .cse4 .cse9))) (let ((.cse0 (fp.lt (fp.add c_currentRoundingMode .cse5 .cse9) (fp.sub c_currentRoundingMode .cse6 .cse9)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 10000000.0)) |c_ULTIMATE.start_main_~y~0#1|) .cse0 (or (not (fp.lt .cse1 .cse2)) (not (fp.lt .cse3 .cse4)) .cse0 (not (fp.lt .cse5 .cse6)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse7 .cse8))) (= .cse9 |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)))))))) is different from true [2021-11-21 01:42:29,670 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse6 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (.cse7 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse0))) (let ((.cse2 (fp.sub c_currentRoundingMode .cse7 .cse0)) (.cse1 (fp.add c_currentRoundingMode .cse6 .cse0))) (let ((.cse3 (fp.add c_currentRoundingMode .cse1 .cse0)) (.cse4 (fp.sub c_currentRoundingMode .cse2 .cse0))) (let ((.cse5 (fp.lt (fp.add c_currentRoundingMode .cse3 .cse0) (fp.sub c_currentRoundingMode .cse4 .cse0)))) (and (= (fp.add c_currentRoundingMode .cse0 .cse0) |c_ULTIMATE.start_main_~x~0#1|) (or (not (fp.lt .cse1 .cse2)) (not (fp.lt .cse3 .cse4)) .cse5 (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse6 .cse7))) .cse5 (= (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 10000000.0)) .cse0) |c_ULTIMATE.start_main_~y~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))))))) is different from true [2021-11-21 01:43:09,349 WARN L227 SmtUtils]: Spent 13.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:43:11,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:21,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:25,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:33,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:35,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:35,081 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-21 01:43:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:43:35,099 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 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 11 [2021-11-21 01:43:35,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:35,100 INFO L225 Difference]: With dead ends: 21 [2021-11-21 01:43:35,100 INFO L226 Difference]: Without dead ends: 17 [2021-11-21 01:43:35,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 112.2s TimeCoverageRelationStatistics Valid=129, Invalid=194, Unknown=19, NotChecked=360, Total=702 [2021-11-21 01:43:35,102 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:35,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 46 Invalid, 4 Unknown, 69 Unchecked, 22.6s Time] [2021-11-21 01:43:35,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-21 01:43:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-21 01:43:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:43:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-21 01:43:35,110 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2021-11-21 01:43:35,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:35,110 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-21 01:43:35,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2021-11-21 01:43:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-21 01:43:35,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:43:35,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:35,112 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1] [2021-11-21 01:43:35,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-21 01:43:35,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:35,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-21 01:43:35,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:43:35,736 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1299398672, now seen corresponding path program 3 times [2021-11-21 01:43:35,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:43:35,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926422657] [2021-11-21 01:43:35,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:43:35,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:43:35,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:43:35,740 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:43:35,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:43:36,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-21 01:43:36,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:43:36,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-21 01:43:36,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:06,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:44,720 WARN L227 SmtUtils]: Spent 10.54s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:45:04,556 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse2)) (.cse3 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse2))) (let ((.cse0 (fp.add c_currentRoundingMode .cse3 .cse2)) (.cse1 (fp.sub c_currentRoundingMode .cse4 .cse2))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse2) (fp.sub c_currentRoundingMode .cse1 .cse2)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse3 .cse4)))))) is different from true [2021-11-21 01:45:26,812 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse4)) (.cse6 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse4))) (let ((.cse1 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse0 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse4)) (.cse3 (fp.sub c_currentRoundingMode .cse1 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse4) (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse5 .cse6))))))) is different from false [2021-11-21 01:45:28,850 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse4)) (.cse6 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse4))) (let ((.cse1 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse0 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse4)) (.cse3 (fp.sub c_currentRoundingMode .cse1 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse4) (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse5 .cse6))))))) is different from true [2021-11-21 01:45:51,578 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse8 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse5)) (.cse7 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse5))) (let ((.cse0 (fp.add c_currentRoundingMode .cse7 .cse5)) (.cse1 (fp.sub c_currentRoundingMode .cse8 .cse5))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse1 .cse5)) (.cse2 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse5))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (not (fp.lt .cse4 .cse6)) (not (fp.lt .cse7 .cse8)))))))) is different from false [2021-11-21 01:45:53,626 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse8 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse5)) (.cse7 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse5))) (let ((.cse0 (fp.add c_currentRoundingMode .cse7 .cse5)) (.cse1 (fp.sub c_currentRoundingMode .cse8 .cse5))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse1 .cse5)) (.cse2 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse5))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (not (fp.lt .cse4 .cse6)) (not (fp.lt .cse7 .cse8)))))))) is different from true [2021-11-21 01:46:16,566 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse3) .cse3)) (.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse3) .cse3))) (let ((.cse5 (fp.add c_currentRoundingMode .cse0 .cse3)) (.cse6 (fp.sub c_currentRoundingMode .cse1 .cse3))) (let ((.cse8 (fp.sub c_currentRoundingMode .cse6 .cse3)) (.cse7 (fp.add c_currentRoundingMode .cse5 .cse3))) (let ((.cse2 (fp.add c_currentRoundingMode .cse7 .cse3)) (.cse4 (fp.sub c_currentRoundingMode .cse8 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse3) (fp.sub c_currentRoundingMode .cse4 .cse3)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse7 .cse8)) (not (fp.lt .cse2 .cse4)))))))) is different from false [2021-11-21 01:46:18,622 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse3) .cse3)) (.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse3) .cse3))) (let ((.cse5 (fp.add c_currentRoundingMode .cse0 .cse3)) (.cse6 (fp.sub c_currentRoundingMode .cse1 .cse3))) (let ((.cse8 (fp.sub c_currentRoundingMode .cse6 .cse3)) (.cse7 (fp.add c_currentRoundingMode .cse5 .cse3))) (let ((.cse2 (fp.add c_currentRoundingMode .cse7 .cse3)) (.cse4 (fp.sub c_currentRoundingMode .cse8 .cse3))) (or (not (fp.lt .cse0 .cse1)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse3) (fp.sub c_currentRoundingMode .cse4 .cse3)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse7 .cse8)) (not (fp.lt .cse2 .cse4)))))))) is different from true [2021-11-21 01:46:41,690 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse8 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse8) .cse8) .cse8)) (.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse8) .cse8) .cse8))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse8)) (.cse3 (fp.sub c_currentRoundingMode .cse1 .cse8))) (let ((.cse7 (fp.sub c_currentRoundingMode .cse3 .cse8)) (.cse6 (fp.add c_currentRoundingMode .cse2 .cse8))) (let ((.cse4 (fp.add c_currentRoundingMode .cse6 .cse8)) (.cse5 (fp.sub c_currentRoundingMode .cse7 .cse8))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (not (fp.lt .cse4 .cse5)) (not (fp.lt .cse6 .cse7)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse8) (fp.sub c_currentRoundingMode .cse5 .cse8)))))))) is different from false [2021-11-21 01:46:43,743 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse8 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse8) .cse8) .cse8)) (.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse8) .cse8) .cse8))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse8)) (.cse3 (fp.sub c_currentRoundingMode .cse1 .cse8))) (let ((.cse7 (fp.sub c_currentRoundingMode .cse3 .cse8)) (.cse6 (fp.add c_currentRoundingMode .cse2 .cse8))) (let ((.cse4 (fp.add c_currentRoundingMode .cse6 .cse8)) (.cse5 (fp.sub c_currentRoundingMode .cse7 .cse8))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (not (fp.lt .cse4 .cse5)) (not (fp.lt .cse6 .cse7)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse8) (fp.sub c_currentRoundingMode .cse5 .cse8)))))))) is different from true [2021-11-21 01:47:06,683 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse8 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse8) .cse8) .cse8) .cse8)) (.cse2 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse8) .cse8) .cse8) .cse8))) (let ((.cse6 (fp.add c_currentRoundingMode .cse2 .cse8)) (.cse7 (fp.sub c_currentRoundingMode .cse3 .cse8))) (let ((.cse5 (fp.sub c_currentRoundingMode .cse7 .cse8)) (.cse4 (fp.add c_currentRoundingMode .cse6 .cse8))) (let ((.cse0 (fp.add c_currentRoundingMode .cse4 .cse8)) (.cse1 (fp.sub c_currentRoundingMode .cse5 .cse8))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (not (fp.lt .cse4 .cse5)) (not (fp.lt .cse6 .cse7)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse8) (fp.sub c_currentRoundingMode .cse1 .cse8)))))))) is different from false [2021-11-21 01:47:08,746 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse8 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse8) .cse8) .cse8) .cse8)) (.cse2 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse8) .cse8) .cse8) .cse8))) (let ((.cse6 (fp.add c_currentRoundingMode .cse2 .cse8)) (.cse7 (fp.sub c_currentRoundingMode .cse3 .cse8))) (let ((.cse5 (fp.sub c_currentRoundingMode .cse7 .cse8)) (.cse4 (fp.add c_currentRoundingMode .cse6 .cse8))) (let ((.cse0 (fp.add c_currentRoundingMode .cse4 .cse8)) (.cse1 (fp.sub c_currentRoundingMode .cse5 .cse8))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (not (fp.lt .cse4 .cse5)) (not (fp.lt .cse6 .cse7)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse8) (fp.sub c_currentRoundingMode .cse1 .cse8)))))))) is different from true [2021-11-21 01:47:31,838 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse8 (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#1| .cse4) .cse4) .cse4) .cse4) .cse4)) (.cse7 (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#1| .cse4) .cse4) .cse4) .cse4) .cse4))) (let ((.cse5 (fp.add c_currentRoundingMode .cse7 .cse4)) (.cse6 (fp.sub c_currentRoundingMode .cse8 .cse4))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse2 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse0 (fp.add c_currentRoundingMode .cse2 .cse4)) (.cse1 (fp.sub c_currentRoundingMode .cse3 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse4) (fp.sub c_currentRoundingMode .cse1 .cse4)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse7 .cse8)))))))) is different from false [2021-11-21 01:47:33,902 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse8 (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#1| .cse4) .cse4) .cse4) .cse4) .cse4)) (.cse7 (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#1| .cse4) .cse4) .cse4) .cse4) .cse4))) (let ((.cse5 (fp.add c_currentRoundingMode .cse7 .cse4)) (.cse6 (fp.sub c_currentRoundingMode .cse8 .cse4))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse2 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse0 (fp.add c_currentRoundingMode .cse2 .cse4)) (.cse1 (fp.sub c_currentRoundingMode .cse3 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse4) (fp.sub c_currentRoundingMode .cse1 .cse4)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse7 .cse8)))))))) is different from true [2021-11-21 01:47:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 42 not checked. [2021-11-21 01:47:33,928 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:33,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926422657] [2021-11-21 01:47:33,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926422657] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:47:33,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [860611954] [2021-11-21 01:47:33,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:47:33,929 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:47:33,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:47:33,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:47:33,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-21 01:47:35,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-21 01:47:35,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:47:35,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:47:35,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:35,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:48:16,420 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse4)) (.cse6 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse4))) (let ((.cse1 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse0 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse4)) (.cse3 (fp.sub c_currentRoundingMode .cse1 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse4) (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.lt .cse5 .cse6))))))) is different from false [2021-11-21 01:48:18,454 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse4)) (.cse6 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse4))) (let ((.cse1 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse0 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse0 .cse4)) (.cse3 (fp.sub c_currentRoundingMode .cse1 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse4) (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.lt .cse5 .cse6))))))) is different from true [2021-11-21 01:48:36,561 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse5) .cse5)) (.cse1 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse5) .cse5))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse1 .cse5)) (.cse2 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse5))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (not (fp.lt .cse4 .cse6))))))) is different from false [2021-11-21 01:48:38,601 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse5) .cse5)) (.cse1 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse5) .cse5))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse1 .cse5)) (.cse2 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse5))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (not (fp.lt .cse4 .cse6))))))) is different from true [2021-11-21 01:48:57,287 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) .cse1) .cse1)) (.cse4 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse1) .cse1) .cse1))) (let ((.cse6 (fp.sub c_currentRoundingMode .cse4 .cse1)) (.cse5 (fp.add c_currentRoundingMode .cse3 .cse1))) (let ((.cse0 (fp.add c_currentRoundingMode .cse5 .cse1)) (.cse2 (fp.sub c_currentRoundingMode .cse6 .cse1))) (or (fp.lt (fp.add c_currentRoundingMode .cse0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1)) (not (fp.lt .cse3 .cse4)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse0 .cse2))))))) is different from false [2021-11-21 01:48:59,341 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) .cse1) .cse1)) (.cse4 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse1) .cse1) .cse1))) (let ((.cse6 (fp.sub c_currentRoundingMode .cse4 .cse1)) (.cse5 (fp.add c_currentRoundingMode .cse3 .cse1))) (let ((.cse0 (fp.add c_currentRoundingMode .cse5 .cse1)) (.cse2 (fp.sub c_currentRoundingMode .cse6 .cse1))) (or (fp.lt (fp.add c_currentRoundingMode .cse0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1)) (not (fp.lt .cse3 .cse4)) (not (fp.lt .cse5 .cse6)) (not (fp.lt .cse0 .cse2))))))) is different from true [2021-11-21 01:49:18,073 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse6) .cse6) .cse6) .cse6)) (.cse1 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse6) .cse6) .cse6) .cse6))) (let ((.cse5 (fp.sub c_currentRoundingMode .cse1 .cse6)) (.cse4 (fp.add c_currentRoundingMode .cse0 .cse6))) (let ((.cse2 (fp.add c_currentRoundingMode .cse4 .cse6)) (.cse3 (fp.sub c_currentRoundingMode .cse5 .cse6))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (not (fp.lt .cse4 .cse5)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse6) (fp.sub c_currentRoundingMode .cse3 .cse6))))))) is different from false [2021-11-21 01:49:20,130 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse6) .cse6) .cse6) .cse6)) (.cse1 (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse6) .cse6) .cse6) .cse6))) (let ((.cse5 (fp.sub c_currentRoundingMode .cse1 .cse6)) (.cse4 (fp.add c_currentRoundingMode .cse0 .cse6))) (let ((.cse2 (fp.add c_currentRoundingMode .cse4 .cse6)) (.cse3 (fp.sub c_currentRoundingMode .cse5 .cse6))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (not (fp.lt .cse4 .cse5)) (fp.lt (fp.add c_currentRoundingMode .cse2 .cse6) (fp.sub c_currentRoundingMode .cse3 .cse6))))))) is different from true [2021-11-21 01:49:38,955 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse4 (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#1| .cse6) .cse6) .cse6) .cse6) .cse6)) (.cse5 (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#1| .cse6) .cse6) .cse6) .cse6) .cse6))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse5 .cse6)) (.cse2 (fp.add c_currentRoundingMode .cse4 .cse6))) (let ((.cse0 (fp.add c_currentRoundingMode .cse2 .cse6)) (.cse1 (fp.sub c_currentRoundingMode .cse3 .cse6))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (not (fp.lt .cse4 .cse5)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse6) (fp.sub c_currentRoundingMode .cse1 .cse6))))))) is different from false [2021-11-21 01:49:41,017 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse4 (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#1| .cse6) .cse6) .cse6) .cse6) .cse6)) (.cse5 (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#1| .cse6) .cse6) .cse6) .cse6) .cse6))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse5 .cse6)) (.cse2 (fp.add c_currentRoundingMode .cse4 .cse6))) (let ((.cse0 (fp.add c_currentRoundingMode .cse2 .cse6)) (.cse1 (fp.sub c_currentRoundingMode .cse3 .cse6))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (not (fp.lt .cse4 .cse5)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse6) (fp.sub c_currentRoundingMode .cse1 .cse6))))))) is different from true [2021-11-21 01:49:59,943 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse5 (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#1| .cse4) .cse4) .cse4) .cse4) .cse4) .cse4)) (.cse6 (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#1| .cse4) .cse4) .cse4) .cse4) .cse4) .cse4))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse2 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse0 (fp.add c_currentRoundingMode .cse2 .cse4)) (.cse1 (fp.sub c_currentRoundingMode .cse3 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse4) (fp.sub c_currentRoundingMode .cse1 .cse4)) (not (fp.lt .cse5 .cse6))))))) is different from false [2021-11-21 01:50:02,008 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse5 (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#1| .cse4) .cse4) .cse4) .cse4) .cse4) .cse4)) (.cse6 (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#1| .cse4) .cse4) .cse4) .cse4) .cse4) .cse4))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse6 .cse4)) (.cse2 (fp.add c_currentRoundingMode .cse5 .cse4))) (let ((.cse0 (fp.add c_currentRoundingMode .cse2 .cse4)) (.cse1 (fp.sub c_currentRoundingMode .cse3 .cse4))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse0 .cse4) (fp.sub c_currentRoundingMode .cse1 .cse4)) (not (fp.lt .cse5 .cse6))))))) is different from true [2021-11-21 01:50:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 42 not checked. [2021-11-21 01:50:02,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [860611954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:02,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42335566] [2021-11-21 01:50:02,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:50:02,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:02,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:02,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:50:02,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f214917e-06ef-45df-a7fd-03e3869ceec6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:50:32,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-21 01:50:32,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:50:32,432 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-21 01:50:32,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:32,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:43,775 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse8 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse5)) (.cse7 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse5))) (let ((.cse0 (fp.add c_currentRoundingMode .cse7 .cse5)) (.cse1 (fp.sub c_currentRoundingMode .cse8 .cse5))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse1 .cse5)) (.cse2 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse5))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (not (fp.lt .cse4 .cse6)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse7 .cse8)))))))) is different from false [2021-11-21 01:51:45,818 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse8 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| .cse5)) (.cse7 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse5))) (let ((.cse0 (fp.add c_currentRoundingMode .cse7 .cse5)) (.cse1 (fp.sub c_currentRoundingMode .cse8 .cse5))) (let ((.cse3 (fp.sub c_currentRoundingMode .cse1 .cse5)) (.cse2 (fp.add c_currentRoundingMode .cse0 .cse5))) (let ((.cse4 (fp.add c_currentRoundingMode .cse2 .cse5)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse5))) (or (not (fp.lt .cse0 .cse1)) (not (fp.lt .cse2 .cse3)) (fp.lt (fp.add c_currentRoundingMode .cse4 .cse5) (fp.sub c_currentRoundingMode .cse6 .cse5)) (not (fp.lt .cse4 .cse6)) (not (fp.lt |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (fp.lt .cse7 .cse8)))))))) is different from true