./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae4391defacca69a38cbe50f54517d5a9901ae5aadf26a16d1de8c85a3ebd382 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:20:27,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:20:27,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:20:27,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:20:27,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:20:27,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:20:27,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:20:27,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:20:27,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:20:27,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:20:27,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:20:27,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:20:27,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:20:27,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:20:27,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:20:27,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:20:27,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:20:27,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:20:27,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:20:27,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:20:27,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:20:27,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:20:27,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:20:27,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:20:27,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:20:27,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:20:27,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:20:27,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:20:27,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:20:27,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:20:27,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:20:27,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:20:27,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:20:27,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:20:27,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:20:27,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:20:27,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:20:27,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:20:27,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:20:27,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:20:27,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:20:27,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:20:27,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:20:27,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:20:27,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:20:27,737 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:20:27,738 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:20:27,738 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:20:27,738 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:20:27,738 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:20:27,745 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:20:27,745 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:20:27,746 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:20:27,746 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:20:27,747 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:20:27,747 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:20:27,747 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:20:27,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:20:27,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:20:27,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:20:27,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:20:27,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:20:27,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:20:27,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:20:27,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:20:27,749 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:20:27,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:20:27,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:20:27,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:20:27,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:20:27,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:20:27,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:20:27,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:20:27,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:20:27,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:20:27,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:20:27,753 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:20:27,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:20:27,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:20:27,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:20:27,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:20:27,754 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_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae4391defacca69a38cbe50f54517d5a9901ae5aadf26a16d1de8c85a3ebd382 [2021-11-03 05:20:28,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:20:28,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:20:28,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:20:28,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:20:28,060 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:20:28,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2021-11-03 05:20:28,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data/0f9c59b5a/52a88f25428c41d980d5e789c3d18753/FLAG9a69dbd3d [2021-11-03 05:20:28,636 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:20:28,637 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2021-11-03 05:20:28,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data/0f9c59b5a/52a88f25428c41d980d5e789c3d18753/FLAG9a69dbd3d [2021-11-03 05:20:29,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data/0f9c59b5a/52a88f25428c41d980d5e789c3d18753 [2021-11-03 05:20:29,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:20:29,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:20:29,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:20:29,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:20:29,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:20:29,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d86eedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29, skipping insertion in model container [2021-11-03 05:20:29,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:20:29,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:20:29,270 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2021-11-03 05:20:29,289 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2021-11-03 05:20:29,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:20:29,307 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:20:29,328 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2021-11-03 05:20:29,334 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2021-11-03 05:20:29,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:20:29,367 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:20:29,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29 WrapperNode [2021-11-03 05:20:29,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:20:29,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:20:29,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:20:29,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:20:29,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:20:29,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:20:29,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:20:29,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:20:29,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:20:29,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:20:29,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:20:29,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:20:29,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (1/1) ... [2021-11-03 05:20:29,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:20:29,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:20:29,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:20:29,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:20:29,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:20:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:20:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:20:29,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:20:29,967 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:20:29,967 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:20:29,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:29 BoogieIcfgContainer [2021-11-03 05:20:29,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:20:29,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:20:29,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:20:29,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:20:29,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:20:29" (1/3) ... [2021-11-03 05:20:29,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c83495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:29, skipping insertion in model container [2021-11-03 05:20:29,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:29" (2/3) ... [2021-11-03 05:20:29,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c83495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:29, skipping insertion in model container [2021-11-03 05:20:29,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:29" (3/3) ... [2021-11-03 05:20:29,995 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+nlh-reducer.c [2021-11-03 05:20:30,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:20:30,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 05:20:30,067 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:20:30,091 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:20:30,091 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 05:20:30,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 25 states have (on average 1.64) internal successors, (41), 27 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 05:20:30,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:30,110 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:30,111 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash -912134591, now seen corresponding path program 1 times [2021-11-03 05:20:30,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:30,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731170560] [2021-11-03 05:20:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:30,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:30,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:20:30,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731170560] [2021-11-03 05:20:30,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731170560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:30,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:30,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 05:20:30,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270747790] [2021-11-03 05:20:30,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:20:30,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:20:30,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:20:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:20:30,395 INFO L87 Difference]: Start difference. First operand has 28 states, 25 states have (on average 1.64) internal successors, (41), 27 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:30,488 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-11-03 05:20:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:20:30,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 05:20:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:30,500 INFO L225 Difference]: With dead ends: 39 [2021-11-03 05:20:30,501 INFO L226 Difference]: Without dead ends: 29 [2021-11-03 05:20:30,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:20:30,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-03 05:20:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-11-03 05:20:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-11-03 05:20:30,542 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 10 [2021-11-03 05:20:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:30,543 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-11-03 05:20:30,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-11-03 05:20:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 05:20:30,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:30,544 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:30,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:20:30,545 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash -842691770, now seen corresponding path program 1 times [2021-11-03 05:20:30,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:30,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183028703] [2021-11-03 05:20:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:30,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:20:30,578 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 05:20:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:20:30,655 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 05:20:30,656 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 05:20:30,658 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:20:30,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:20:30,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:20:30,664 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 05:20:30,669 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:20:30,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:20:30 BoogieIcfgContainer [2021-11-03 05:20:30,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:20:30,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:20:30,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:20:30,699 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:20:30,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:29" (3/4) ... [2021-11-03 05:20:30,703 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:20:30,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:20:30,706 INFO L168 Benchmark]: Toolchain (without parser) took 1691.37 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.6 MB in the beginning and 81.7 MB in the end (delta: -15.1 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:20:30,706 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:20:30,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.13 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 74.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:20:30,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.23 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 72.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:20:30,709 INFO L168 Benchmark]: Boogie Preprocessor took 43.37 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 71.5 MB in the end (delta: 920.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:20:30,710 INFO L168 Benchmark]: RCFGBuilder took 511.01 ms. Allocated memory is still 100.7 MB. Free memory was 71.2 MB in the beginning and 58.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:20:30,710 INFO L168 Benchmark]: TraceAbstraction took 725.54 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 57.7 MB in the beginning and 82.0 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:20:30,711 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 121.6 MB. Free memory was 82.0 MB in the beginning and 81.7 MB in the end (delta: 314.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:20:30,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.13 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 74.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.23 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 72.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.37 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 71.5 MB in the end (delta: 920.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 511.01 ms. Allocated memory is still 100.7 MB. Free memory was 71.2 MB in the beginning and 58.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 725.54 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 57.7 MB in the beginning and 82.0 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.85 ms. Allocated memory is still 121.6 MB. Free memory was 82.0 MB in the beginning and 81.7 MB in the end (delta: 314.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of to_real at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 177. Possible FailurePath: [L1] int __return_main; [L13] int __tmp_129_0; [L14] int __tmp_129_1; [L15] int __tmp_129_2; [L16] int __tmp_112_0; [L17] int __return_134; [L20] double main__E0; [L21] double main__E1; [L22] double main__S; [L23] int main__i; [L24] main__E1 = 0 [L25] main__S = 0 [L26] main__i = 0 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L27] COND TRUE main__i <= 1000000 [L29] main__E0 = __VERIFIER_nondet_double() [L30] int main____CPAchecker_TMP_0; VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L31] COND TRUE main__E0 >= -1.0 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L33] COND TRUE main__E0 <= 1.0 [L35] main____CPAchecker_TMP_0 = 1 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L36] COND TRUE main____CPAchecker_TMP_0 != 0 [L38] int main____CPAchecker_TMP_1; [L39] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L40] COND TRUE !(main____CPAchecker_TMP_1 == 0) [L42] main__S = 0 [L44] main__E1 = main__E0 [L45] int main____CPAchecker_TMP_2; VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L46] COND FALSE !(main__S >= -10000.0) VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L166] main____CPAchecker_TMP_2 = 0 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L53] int __tmp_1; [L54] __tmp_1 = main____CPAchecker_TMP_2 [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_1 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L57] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L59] reach_error() VAL [__return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] - UnprovableResult [Line: 105]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 38 SDslu, 70 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 05:20:30,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/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_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae4391defacca69a38cbe50f54517d5a9901ae5aadf26a16d1de8c85a3ebd382 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:20:33,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:20:33,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:20:33,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:20:33,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:20:33,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:20:33,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:20:33,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:20:33,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:20:33,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:20:33,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:20:33,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:20:33,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:20:33,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:20:33,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:20:33,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:20:33,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:20:33,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:20:33,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:20:33,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:20:33,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:20:33,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:20:33,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:20:33,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:20:33,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:20:33,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:20:33,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:20:33,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:20:33,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:20:33,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:20:33,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:20:33,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:20:33,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:20:33,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:20:33,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:20:33,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:20:33,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:20:33,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:20:33,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:20:33,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:20:33,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:20:33,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:20:33,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:20:33,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:20:33,616 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:20:33,616 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:20:33,616 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:20:33,616 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:20:33,617 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:20:33,617 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:20:33,618 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:20:33,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:20:33,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:20:33,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:20:33,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:20:33,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:20:33,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:20:33,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:20:33,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:20:33,622 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:20:33,623 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:20:33,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:20:33,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:20:33,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:20:33,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:20:33,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:20:33,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:20:33,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:20:33,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:20:33,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:20:33,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:20:33,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:20:33,625 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:20:33,626 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:20:33,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:20:33,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:20:33,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:20:33,627 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_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae4391defacca69a38cbe50f54517d5a9901ae5aadf26a16d1de8c85a3ebd382 [2021-11-03 05:20:33,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:20:34,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:20:34,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:20:34,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:20:34,017 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:20:34,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2021-11-03 05:20:34,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data/8b850c152/250456939ab844b8a12ddbd878dbe0ad/FLAG616cddade [2021-11-03 05:20:34,670 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:20:34,671 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2021-11-03 05:20:34,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data/8b850c152/250456939ab844b8a12ddbd878dbe0ad/FLAG616cddade [2021-11-03 05:20:34,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/data/8b850c152/250456939ab844b8a12ddbd878dbe0ad [2021-11-03 05:20:34,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:20:34,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:20:34,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:20:34,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:20:34,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:20:34,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:20:34" (1/1) ... [2021-11-03 05:20:34,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f457618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:34, skipping insertion in model container [2021-11-03 05:20:34,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:20:34" (1/1) ... [2021-11-03 05:20:35,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:20:35,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:20:35,240 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2021-11-03 05:20:35,266 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2021-11-03 05:20:35,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:20:35,294 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:20:35,319 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2021-11-03 05:20:35,347 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2021-11-03 05:20:35,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:20:35,380 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:20:35,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35 WrapperNode [2021-11-03 05:20:35,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:20:35,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:20:35,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:20:35,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:20:35,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:20:35,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:20:35,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:20:35,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:20:35,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:20:35,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:20:35,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:20:35,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:20:35,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (1/1) ... [2021-11-03 05:20:35,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:20:35,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:20:35,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:20:35,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:20:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:20:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:20:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:20:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:20:40,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:20:40,166 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:20:40,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:40 BoogieIcfgContainer [2021-11-03 05:20:40,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:20:40,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:20:40,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:20:40,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:20:40,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:20:34" (1/3) ... [2021-11-03 05:20:40,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d29d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:40, skipping insertion in model container [2021-11-03 05:20:40,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:35" (2/3) ... [2021-11-03 05:20:40,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d29d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:40, skipping insertion in model container [2021-11-03 05:20:40,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:40" (3/3) ... [2021-11-03 05:20:40,178 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+nlh-reducer.c [2021-11-03 05:20:40,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:20:40,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 05:20:40,227 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:20:40,234 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:20:40,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 05:20:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:20:40,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:40,252 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:40,253 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:40,259 INFO L85 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2021-11-03 05:20:40,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:40,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290505059] [2021-11-03 05:20:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:40,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:40,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:40,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:40,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:20:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:40,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:20:40,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:40,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:40,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:20:40,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290505059] [2021-11-03 05:20:40,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290505059] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:40,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:40,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:20:40,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607007103] [2021-11-03 05:20:40,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:20:40,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:20:40,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:20:40,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:20:40,779 INFO L87 Difference]: Start difference. First operand has 34 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:40,927 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2021-11-03 05:20:40,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:20:40,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 05:20:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:40,941 INFO L225 Difference]: With dead ends: 65 [2021-11-03 05:20:40,941 INFO L226 Difference]: Without dead ends: 48 [2021-11-03 05:20:40,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:20:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-03 05:20:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2021-11-03 05:20:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-11-03 05:20:40,992 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2021-11-03 05:20:40,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:40,993 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-11-03 05:20:40,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:40,994 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-03 05:20:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:20:40,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:40,995 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:41,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:20:41,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:20:41,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:41,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:41,213 INFO L85 PathProgramCache]: Analyzing trace with hash 845201395, now seen corresponding path program 1 times [2021-11-03 05:20:41,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:41,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283367658] [2021-11-03 05:20:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:41,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:41,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:41,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:41,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:20:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:41,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:20:41,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:41,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:41,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:20:41,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283367658] [2021-11-03 05:20:41,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283367658] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:41,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:41,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:20:41,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2435927] [2021-11-03 05:20:41,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:20:41,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:20:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:20:41,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:20:41,629 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:43,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:43,957 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2021-11-03 05:20:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:20:43,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 05:20:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:43,960 INFO L225 Difference]: With dead ends: 88 [2021-11-03 05:20:43,961 INFO L226 Difference]: Without dead ends: 68 [2021-11-03 05:20:43,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:20:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-03 05:20:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 38. [2021-11-03 05:20:43,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-11-03 05:20:43,974 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 13 [2021-11-03 05:20:43,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:43,974 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-11-03 05:20:43,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-11-03 05:20:43,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:20:43,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:43,976 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:43,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 05:20:44,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:20:44,191 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1168948157, now seen corresponding path program 1 times [2021-11-03 05:20:44,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:44,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473798863] [2021-11-03 05:20:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:44,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:44,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:44,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:44,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:20:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:44,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:20:44,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:45,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:51,786 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-03 05:20:53,830 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-03 05:21:08,250 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-03 05:21:10,299 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-03 05:21:24,799 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true [2021-11-03 05:21:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:37,343 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:21:37,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473798863] [2021-11-03 05:21:37,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473798863] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:37,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:37,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-03 05:21:37,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790803529] [2021-11-03 05:21:37,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:21:37,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:21:37,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:21:37,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=30, Unknown=5, NotChecked=42, Total=110 [2021-11-03 05:21:37,347 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:39,752 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) (= .cse1 c_ULTIMATE.start_main_~main__E1~0) (= .cse1 c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 05:21:41,809 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq c_ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)) (= .cse1 c_ULTIMATE.start_main_~main__E1~0) (= .cse1 c_ULTIMATE.start_main_~main__S~0) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 05:21:43,864 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0) (fp.geq c_ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (= .cse1 c_ULTIMATE.start_main_~main__E1~0) (= .cse1 c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 05:21:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:47,230 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2021-11-03 05:21:47,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:21:47,231 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 05:21:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:47,232 INFO L225 Difference]: With dead ends: 84 [2021-11-03 05:21:47,232 INFO L226 Difference]: Without dead ends: 61 [2021-11-03 05:21:47,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=39, Invalid=33, Unknown=8, NotChecked=102, Total=182 [2021-11-03 05:21:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-03 05:21:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 30. [2021-11-03 05:21:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:47,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-11-03 05:21:47,244 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 13 [2021-11-03 05:21:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:47,245 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-11-03 05:21:47,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:47,245 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-11-03 05:21:47,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 05:21:47,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:47,247 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:21:47,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 05:21:47,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:21:47,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:21:47,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:47,473 INFO L85 PathProgramCache]: Analyzing trace with hash 135134655, now seen corresponding path program 1 times [2021-11-03 05:21:47,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:21:47,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257217064] [2021-11-03 05:21:47,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:47,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:21:47,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:21:47,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:21:47,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:21:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:47,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:21:47,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:21:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:47,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:21:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:47,786 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:21:47,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257217064] [2021-11-03 05:21:47,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257217064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:47,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:47,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:21:47,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131967354] [2021-11-03 05:21:47,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:21:47,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:21:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:21:47,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:21:47,789 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:48,776 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2021-11-03 05:21:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:21:48,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-03 05:21:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:48,778 INFO L225 Difference]: With dead ends: 49 [2021-11-03 05:21:48,778 INFO L226 Difference]: Without dead ends: 29 [2021-11-03 05:21:48,779 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:21:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-03 05:21:48,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-03 05:21:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-03 05:21:48,787 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2021-11-03 05:21:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:48,788 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-03 05:21:48,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-03 05:21:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 05:21:48,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:48,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:21:48,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:21:49,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:21:49,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:21:49,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash -327957724, now seen corresponding path program 1 times [2021-11-03 05:21:49,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:21:49,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428332694] [2021-11-03 05:21:49,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:49,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:21:49,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:21:49,009 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:21:49,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:21:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:49,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:21:49,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:21:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:49,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:21:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:49,402 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:21:49,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428332694] [2021-11-03 05:21:49,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428332694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:49,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:49,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:21:49,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440918221] [2021-11-03 05:21:49,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:21:49,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:21:49,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:21:49,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:21:49,405 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:49,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:49,607 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2021-11-03 05:21:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:21:49,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 24 [2021-11-03 05:21:49,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:49,608 INFO L225 Difference]: With dead ends: 63 [2021-11-03 05:21:49,609 INFO L226 Difference]: Without dead ends: 61 [2021-11-03 05:21:49,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:21:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-03 05:21:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 31. [2021-11-03 05:21:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-03 05:21:49,619 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2021-11-03 05:21:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:49,619 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-03 05:21:49,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-03 05:21:49,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 05:21:49,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:49,621 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:21:49,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:21:49,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:21:49,842 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:21:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:49,842 INFO L85 PathProgramCache]: Analyzing trace with hash 401808482, now seen corresponding path program 1 times [2021-11-03 05:21:49,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:21:49,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100282163] [2021-11-03 05:21:49,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:49,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:21:49,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:21:49,846 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:21:49,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:21:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:50,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:21:50,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:22,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:30,950 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-03 05:22:33,001 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-03 05:22:47,466 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-03 05:22:49,519 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-03 05:23:04,050 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true [2021-11-03 05:24:33,379 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg .cse0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq v_ULTIMATE.start_main_~main__E0~0_21 .cse0))))) is different from true [2021-11-03 05:24:55,085 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-03 05:25:12,738 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from false [2021-11-03 05:25:14,749 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true [2021-11-03 05:25:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:25:47,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:25:47,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100282163] [2021-11-03 05:25:47,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100282163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:47,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:47,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-11-03 05:25:47,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311108025] [2021-11-03 05:25:47,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 05:25:47,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:25:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 05:25:47,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=82, Unknown=20, NotChecked=150, Total=306 [2021-11-03 05:25:47,102 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:51,481 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-03 05:26:13,253 WARN L207 SmtUtils]: Spent 8.64 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-03 05:26:28,597 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-03 05:26:35,976 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg .cse0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq v_ULTIMATE.start_main_~main__E0~0_21 .cse0))))) (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse1) (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg .cse2))) (not (fp.leq v_ULTIMATE.start_main_~main__E0~0_21 .cse2)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))))) (fp.geq c_ULTIMATE.start_main_~main__E0~0 (fp.neg .cse1)) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 05:26:40,512 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) (fp.leq c_ULTIMATE.start_main_~main__E1~0 .cse1) (fp.geq c_ULTIMATE.start_main_~main__E1~0 (fp.neg .cse1)) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 05:26:50,121 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.neg .cse0))) (and (fp.leq c_ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq c_ULTIMATE.start_main_~main__E1~0 .cse1) (fp.geq c_ULTIMATE.start_main_~main__E0~0 .cse1) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-03 05:26:53,159 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.neg .cse0))) (and (fp.leq c_ULTIMATE.start_main_~main__E1~0 .cse0) (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0) (fp.geq c_ULTIMATE.start_main_~main__E1~0 .cse1) (fp.geq c_ULTIMATE.start_main_~main__E0~0 .cse1) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-03 05:27:30,700 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-03 05:27:43,717 WARN L207 SmtUtils]: Spent 5.53 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-03 05:29:11,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:11,211 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2021-11-03 05:29:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 05:29:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 17 states have internal predecessors, (44), 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 24 [2021-11-03 05:29:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:11,214 INFO L225 Difference]: With dead ends: 103 [2021-11-03 05:29:11,215 INFO L226 Difference]: Without dead ends: 84 [2021-11-03 05:29:11,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 167.5s TimeCoverageRelationStatistics Valid=168, Invalid=330, Unknown=52, NotChecked=572, Total=1122 [2021-11-03 05:29:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-03 05:29:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 64. [2021-11-03 05:29:11,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-11-03 05:29:11,233 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 24 [2021-11-03 05:29:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:11,233 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-11-03 05:29:11,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:29:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-11-03 05:29:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 05:29:11,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:11,235 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:11,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:11,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:11,436 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:29:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2054568430, now seen corresponding path program 1 times [2021-11-03 05:29:11,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:11,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393356900] [2021-11-03 05:29:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:11,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:11,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:11,444 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:11,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb482da-0fb8-4514-928e-b09f5ed2bf32/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:29:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:13,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 05:29:13,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:30:32,865 WARN L207 SmtUtils]: Spent 10.31 s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-03 05:31:59,609 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.neg .cse0))) (and (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse1 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 .cse2) ULTIMATE.start_main_~main__E1~0) .cse2)))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E1~0 .cse3) (fp.geq ULTIMATE.start_main_~main__E0~0 .cse3))))) is different from false [2021-11-03 05:32:01,643 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.neg .cse0))) (and (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse1 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 .cse2) ULTIMATE.start_main_~main__E1~0) .cse2)))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E1~0 .cse3) (fp.geq ULTIMATE.start_main_~main__E0~0 .cse3))))) is different from true [2021-11-03 05:34:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:34:23,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:34:31,307 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-03 05:34:33,365 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-03 05:34:47,842 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-03 05:34:49,902 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true