./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG --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 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 ..................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG --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 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:35:42,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:35:42,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:35:42,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:35:42,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:35:42,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:35:42,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:35:42,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:35:42,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:35:42,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:35:42,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:35:42,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:35:42,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:35:42,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:35:42,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:35:42,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:35:42,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:35:42,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:35:42,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:35:42,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:35:42,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:35:42,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:35:42,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:35:42,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:35:42,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:35:42,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:35:42,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:35:42,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:35:42,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:35:42,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:35:42,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:35:42,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:35:42,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:35:42,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:35:42,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:35:42,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:35:42,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:35:42,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:35:42,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:35:42,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:35:42,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:35:42,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:35:42,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:35:42,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:35:42,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:35:42,679 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:35:42,680 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:35:42,680 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:35:42,680 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:35:42,681 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:35:42,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:35:42,689 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:35:42,690 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:35:42,690 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:35:42,691 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:35:42,691 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:35:42,691 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:35:42,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:35:42,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:35:42,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:35:42,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:35:42,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:35:42,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:35:42,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:35:42,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:35:42,695 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:35:42,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:35:42,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:35:42,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:35:42,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:35:42,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:35:42,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:35:42,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:35:42,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:35:42,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:35:42,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:35:42,700 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:35:42,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:35:42,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:35:42,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:35:42,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:35:42,701 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_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2021-10-29 05:35:43,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:35:43,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:35:43,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:35:43,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:35:43,067 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:35:43,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-29 05:35:43,193 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data/950df44f7/476568bc79e946a8a663443facbe6d74/FLAGfd288d33c [2021-10-29 05:35:43,737 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:35:43,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-29 05:35:43,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data/950df44f7/476568bc79e946a8a663443facbe6d74/FLAGfd288d33c [2021-10-29 05:35:44,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data/950df44f7/476568bc79e946a8a663443facbe6d74 [2021-10-29 05:35:44,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:35:44,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:35:44,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:35:44,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:35:44,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:35:44,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1e4388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44, skipping insertion in model container [2021-10-29 05:35:44,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:35:44,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:35:44,345 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_1d30f016-da07-4160-9a05-9480b4401578/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-29 05:35:44,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:35:44,380 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:35:44,392 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_1d30f016-da07-4160-9a05-9480b4401578/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-29 05:35:44,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:35:44,417 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:35:44,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44 WrapperNode [2021-10-29 05:35:44,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:35:44,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:35:44,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:35:44,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:35:44,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:35:44,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:35:44,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:35:44,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:35:44,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:35:44,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:35:44,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:35:44,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:35:44,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (1/1) ... [2021-10-29 05:35:44,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:35:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:35:44,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:35:44,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:35:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:35:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:35:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:35:44,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:35:45,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:35:45,024 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-29 05:35:45,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:35:45 BoogieIcfgContainer [2021-10-29 05:35:45,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:35:45,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:35:45,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:35:45,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:35:45,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:35:44" (1/3) ... [2021-10-29 05:35:45,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e02ef38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:35:45, skipping insertion in model container [2021-10-29 05:35:45,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:44" (2/3) ... [2021-10-29 05:35:45,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e02ef38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:35:45, skipping insertion in model container [2021-10-29 05:35:45,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:35:45" (3/3) ... [2021-10-29 05:35:45,048 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-10-29 05:35:45,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:35:45,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:35:45,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:35:45,177 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 [2021-10-29 05:35:45,178 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:35:45,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:35:45,233 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:45,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:35:45,235 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:35:45,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash 86253018, now seen corresponding path program 1 times [2021-10-29 05:35:45,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:45,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885714046] [2021-10-29 05:35:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:45,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:35:45,400 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:35:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:35:45,498 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:35:45,501 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:35:45,502 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:35:45,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:35:45,510 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:35:45,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:35:45,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:35:45 BoogieIcfgContainer [2021-10-29 05:35:45,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:35:45,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:35:45,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:35:45,539 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:35:45,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:35:45" (3/4) ... [2021-10-29 05:35:45,544 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:35:45,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:35:45,547 INFO L168 Benchmark]: Toolchain (without parser) took 1469.74 ms. Allocated memory is still 121.6 MB. Free memory was 78.6 MB in the beginning and 64.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:45,548 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 121.6 MB. Free memory is still 95.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:35:45,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.47 ms. Allocated memory is still 121.6 MB. Free memory was 78.5 MB in the beginning and 95.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:45,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.03 ms. Allocated memory is still 121.6 MB. Free memory was 95.2 MB in the beginning and 93.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:45,550 INFO L168 Benchmark]: Boogie Preprocessor took 31.07 ms. Allocated memory is still 121.6 MB. Free memory was 93.8 MB in the beginning and 92.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:35:45,551 INFO L168 Benchmark]: RCFGBuilder took 535.03 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 79.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:45,552 INFO L168 Benchmark]: TraceAbstraction took 509.18 ms. Allocated memory is still 121.6 MB. Free memory was 78.4 MB in the beginning and 64.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:45,553 INFO L168 Benchmark]: Witness Printer took 4.88 ms. Allocated memory is still 121.6 MB. Free memory was 64.8 MB in the beginning and 64.4 MB in the end (delta: 355.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:45,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 121.6 MB. Free memory is still 95.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.47 ms. Allocated memory is still 121.6 MB. Free memory was 78.5 MB in the beginning and 95.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.03 ms. Allocated memory is still 121.6 MB. Free memory was 95.2 MB in the beginning and 93.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.07 ms. Allocated memory is still 121.6 MB. Free memory was 93.8 MB in the beginning and 92.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 535.03 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 79.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 509.18 ms. Allocated memory is still 121.6 MB. Free memory was 78.4 MB in the beginning and 64.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.88 ms. Allocated memory is still 121.6 MB. Free memory was 64.8 MB in the beginning and 64.4 MB in the end (delta: 355.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 53. Possible FailurePath: [L15] double _EPS = 1e-6; [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. VAL [_EPS=1/1000000] [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND TRUE Input <= 1.0 [L21] xn = 1.0 [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [_EPS=1/1000000] [L28] COND FALSE !(\read(cond)) [L38] return 1.0 / xnp1; [L51] r = SqrtR(dd) [L13] COND TRUE !(cond) VAL [_EPS=1/1000000] [L13] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:35:45,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:35:48,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:35:48,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:35:48,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:35:48,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:35:48,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:35:48,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:35:48,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:35:48,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:35:48,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:35:48,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:35:48,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:35:48,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:35:48,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:35:48,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:35:48,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:35:48,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:35:48,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:35:48,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:35:48,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:35:48,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:35:48,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:35:48,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:35:48,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:35:48,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:35:48,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:35:48,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:35:48,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:35:48,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:35:48,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:35:48,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:35:48,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:35:48,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:35:48,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:35:48,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:35:48,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:35:48,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:35:48,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:35:48,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:35:48,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:35:48,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:35:48,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:35:48,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:35:48,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:35:48,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:35:48,869 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:35:48,870 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:35:48,870 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:35:48,870 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:35:48,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:35:48,871 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:35:48,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:35:48,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:35:48,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:35:48,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:35:48,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:35:48,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:35:48,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:35:48,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:35:48,876 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:35:48,876 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:35:48,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:35:48,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:35:48,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:35:48,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:35:48,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:35:48,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:35:48,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:35:48,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:35:48,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:35:48,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:35:48,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:35:48,880 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:35:48,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:35:48,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:35:48,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:35:48,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:35:48,882 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_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2021-10-29 05:35:49,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:35:49,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:35:49,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:35:49,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:35:49,388 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:35:49,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-29 05:35:49,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data/ca4a8dc72/6c2d6c7bffd24803bf1e0d0da8c28de6/FLAG965e6fd45 [2021-10-29 05:35:50,135 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:35:50,139 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-29 05:35:50,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data/ca4a8dc72/6c2d6c7bffd24803bf1e0d0da8c28de6/FLAG965e6fd45 [2021-10-29 05:35:50,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/data/ca4a8dc72/6c2d6c7bffd24803bf1e0d0da8c28de6 [2021-10-29 05:35:50,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:35:50,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:35:50,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:35:50,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:35:50,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:35:50,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374848a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50, skipping insertion in model container [2021-10-29 05:35:50,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:35:50,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:35:50,790 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_1d30f016-da07-4160-9a05-9480b4401578/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-29 05:35:50,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:35:50,867 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:35:50,894 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_1d30f016-da07-4160-9a05-9480b4401578/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-29 05:35:50,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:35:50,973 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:35:50,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50 WrapperNode [2021-10-29 05:35:50,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:35:50,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:35:50,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:35:50,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:35:50,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:35:51,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:35:51,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:35:51,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:35:51,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:35:51,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:35:51,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:35:51,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:35:51,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:51,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:35:51,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:35:51,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:35:51,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:35:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:35:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:35:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:35:51,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:36:00,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:36:00,528 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-29 05:36:00,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:36:00 BoogieIcfgContainer [2021-10-29 05:36:00,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:36:00,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:36:00,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:36:00,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:36:00,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:35:50" (1/3) ... [2021-10-29 05:36:00,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92c96a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:36:00, skipping insertion in model container [2021-10-29 05:36:00,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (2/3) ... [2021-10-29 05:36:00,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92c96a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:36:00, skipping insertion in model container [2021-10-29 05:36:00,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:36:00" (3/3) ... [2021-10-29 05:36:00,541 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-10-29 05:36:00,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:36:00,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:36:00,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:36:00,625 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 [2021-10-29 05:36:00,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:36:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 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) [2021-10-29 05:36:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:36:00,649 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:36:00,650 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:36:00,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:36:00,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:36:00,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-29 05:36:00,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:36:00,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572379078] [2021-10-29 05:36:00,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:36:00,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:36:00,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:36:00,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:36:00,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:36:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:36:02,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:36:02,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:36:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:36:02,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:36:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:36:02,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:36:02,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572379078] [2021-10-29 05:36:02,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572379078] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:36:02,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:36:02,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:36:02,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859250308] [2021-10-29 05:36:02,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:36:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:36:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:36:02,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:36:02,939 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:36:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:36:02,957 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-29 05:36:02,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:36:02,959 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:36:02,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:36:02,968 INFO L225 Difference]: With dead ends: 34 [2021-10-29 05:36:02,969 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 05:36:02,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:36:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 05:36:03,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-29 05:36:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-10-29 05:36:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-29 05:36:03,008 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-29 05:36:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:36:03,008 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-29 05:36:03,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:36:03,009 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-29 05:36:03,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:36:03,010 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:36:03,010 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:36:03,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:36:03,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:36:03,227 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:36:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:36:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-29 05:36:03,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:36:03,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821230526] [2021-10-29 05:36:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:36:03,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:36:03,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:36:03,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:36:03,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:36:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:36:05,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:36:05,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:36:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:36:06,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:36:16,876 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from false [2021-10-29 05:36:18,949 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from true [2021-10-29 05:36:39,318 WARN L207 SmtUtils]: Spent 7.55 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2021-10-29 05:36:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:36:49,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:36:49,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821230526] [2021-10-29 05:36:49,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821230526] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:36:49,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:36:49,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 05:36:49,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510022580] [2021-10-29 05:36:49,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:36:49,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:36:49,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:36:49,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=26, Unknown=3, NotChecked=10, Total=56 [2021-10-29 05:36:49,531 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:36:52,636 WARN L860 $PredicateComparison]: unable to prove that (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-29 05:37:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:37:18,436 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-10-29 05:37:18,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:37:18,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:37:18,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:37:18,516 INFO L225 Difference]: With dead ends: 32 [2021-10-29 05:37:18,516 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:37:18,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=19, Invalid=27, Unknown=4, NotChecked=22, Total=72 [2021-10-29 05:37:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:37:18,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 05:37:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:37:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-29 05:37:18,522 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-10-29 05:37:18,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:37:18,523 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-29 05:37:18,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:37:18,523 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-29 05:37:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:37:18,524 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:37:18,524 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:37:18,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 05:37:18,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:37:18,725 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:37:18,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:37:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-10-29 05:37:18,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:37:18,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687501965] [2021-10-29 05:37:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:37:18,727 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:37:18,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:37:18,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:37:18,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:37:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:37:21,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 05:37:21,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:38:09,981 WARN L207 SmtUtils]: Spent 12.54 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-29 05:38:36,208 WARN L207 SmtUtils]: Spent 5.03 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:38:45,789 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:38:48,060 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from false [2021-10-29 05:38:50,135 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from true [2021-10-29 05:39:17,173 WARN L207 SmtUtils]: Spent 5.04 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:39:19,441 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from false [2021-10-29 05:39:21,520 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from true [2021-10-29 05:39:27,604 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:39:33,606 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:39:39,453 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:39:45,258 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:39:51,417 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:39:56,974 WARN L207 SmtUtils]: Spent 5.56 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:39:59,531 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse4 .cse4))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.gt .cse1 (fp.mul c_currentRoundingMode .cse2 .cse3))) (not (fp.lt .cse1 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse4)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:40:05,785 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:40:13,988 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:40:20,034 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:40:26,061 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:40:31,769 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:40:37,732 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-29 05:40:43,759 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-29 05:40:49,865 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:40:58,571 WARN L207 SmtUtils]: Spent 6.17 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:41:06,828 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:41:12,656 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:41:18,514 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:41:24,534 WARN L207 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:41:30,076 WARN L207 SmtUtils]: Spent 5.54 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:41:36,187 WARN L207 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:41:44,789 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:41:50,944 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:41:57,146 WARN L207 SmtUtils]: Spent 6.20 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:42:02,968 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:42:08,400 WARN L207 SmtUtils]: Spent 5.43 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:42:14,228 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:42:20,328 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:42:26,454 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:42:32,597 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:42:38,829 WARN L207 SmtUtils]: Spent 6.23 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:42:44,985 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:42:51,021 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:42:57,334 WARN L207 SmtUtils]: Spent 6.27 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:43:03,248 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-29 05:43:09,098 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:43:15,132 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-29 05:43:21,275 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:43:27,500 WARN L207 SmtUtils]: Spent 6.22 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-29 05:43:33,703 WARN L207 SmtUtils]: Spent 6.20 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-29 05:43:39,896 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-29 05:43:46,032 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-29 05:43:52,238 WARN L207 SmtUtils]: Spent 6.20 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-29 05:43:54,753 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from false [2021-10-29 05:43:57,072 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from true [2021-10-29 05:44:05,574 WARN L207 SmtUtils]: Spent 6.01 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:44:14,233 WARN L207 SmtUtils]: Spent 6.17 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:44:20,395 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-29 05:44:22,074 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-29 05:44:22,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:44:22,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687501965] [2021-10-29 05:44:22,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-29 05:44:22,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2134009413] [2021-10-29 05:44:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:22,077 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:44:22,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:44:22,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-29 05:44:22,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:44:22,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-29 05:44:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:28,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 05:44:28,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:44:28,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-29 05:44:28,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837208257] [2021-10-29 05:44:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:28,334 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:44:28,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:28,337 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:44:28,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:47:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:47:27,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 05:47:27,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:47:27,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-29 05:47:27,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:47:27,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 05:47:27,262 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-29 05:47:27,262 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 05:47:27,269 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:27,472 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-10-29 05:47:27,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2021-10-29 05:47:27,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:47:27,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:47:27,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d30f016-da07-4160-9a05-9480b4401578/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 05:47:27,933 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:47:27,935 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:47:27,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:47:27 BoogieIcfgContainer [2021-10-29 05:47:27,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:47:27,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:47:27,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:47:27,957 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:47:27,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:36:00" (3/4) ... [2021-10-29 05:47:27,961 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:47:27,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:47:27,963 INFO L168 Benchmark]: Toolchain (without parser) took 697482.83 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 29.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:27,967 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:27,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.92 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 49.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:27,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.54 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 48.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:27,971 INFO L168 Benchmark]: Boogie Preprocessor took 69.77 ms. Allocated memory is still 67.1 MB. Free memory was 48.0 MB in the beginning and 46.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:27,975 INFO L168 Benchmark]: RCFGBuilder took 9406.11 ms. Allocated memory is still 67.1 MB. Free memory was 46.6 MB in the beginning and 35.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:27,979 INFO L168 Benchmark]: TraceAbstraction took 687422.52 ms. Allocated memory is still 67.1 MB. Free memory was 35.5 MB in the beginning and 30.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:27,981 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 67.1 MB. Free memory was 30.1 MB in the beginning and 29.9 MB in the end (delta: 289.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:27,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 476.92 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 49.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.54 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 48.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.77 ms. Allocated memory is still 67.1 MB. Free memory was 48.0 MB in the beginning and 46.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9406.11 ms. Allocated memory is still 67.1 MB. Free memory was 46.6 MB in the beginning and 35.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 687422.52 ms. Allocated memory is still 67.1 MB. Free memory was 35.5 MB in the beginning and 30.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.85 ms. Allocated memory is still 67.1 MB. Free memory was 30.1 MB in the beginning and 29.9 MB in the end (delta: 289.4 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] double _EPS = 1e-6; [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 [L28] COND FALSE !(\read(cond)) [L38] return 1.0 / xnp1; [L51] r = SqrtR(dd) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 687.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 23 SolverSat, 0 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 25.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.6s SatisfiabilityAnalysisTime, 465.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 7 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 Received shutdown request...