./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs --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 71d15b3186fc16a974d38e1f9340cf7de3285c68 .................................................................................................................................................................................................................................................................... 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_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs --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 71d15b3186fc16a974d38e1f9340cf7de3285c68 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:28,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:28,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:28,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:28,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:28,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:28,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:28,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:28,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:28,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:28,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:28,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:28,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:28,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:28,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:28,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:28,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:28,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:28,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:28,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:28,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:28,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:28,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:28,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:28,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:28,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:28,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:28,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:28,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:28,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:28,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:28,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:28,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:28,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:28,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:28,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:28,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:28,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:28,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:28,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:28,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:28,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:59:28,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:28,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:28,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:28,204 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:28,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:28,204 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:28,205 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:59:28,211 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:28,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:28,212 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:59:28,213 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:59:28,213 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:28,214 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:59:28,214 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:59:28,214 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:59:28,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:28,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:28,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:59:28,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:28,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:28,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:28,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:28,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:28,217 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:28,217 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:28,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:28,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:28,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:28,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:28,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:28,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:28,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:28,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:28,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:28,221 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:59:28,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:59:28,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:28,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:28,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:28,222 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_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71d15b3186fc16a974d38e1f9340cf7de3285c68 [2021-10-16 01:59:28,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:28,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:28,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:28,634 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:28,635 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:28,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-16 01:59:28,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data/5bdb3cd22/6f1011fe39bb4feaa79725e1f0c99711/FLAG04ab5f270 [2021-10-16 01:59:29,229 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:29,233 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-16 01:59:29,244 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data/5bdb3cd22/6f1011fe39bb4feaa79725e1f0c99711/FLAG04ab5f270 [2021-10-16 01:59:29,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data/5bdb3cd22/6f1011fe39bb4feaa79725e1f0c99711 [2021-10-16 01:59:29,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:29,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:29,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:29,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:29,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:29,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4562d20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29, skipping insertion in model container [2021-10-16 01:59:29,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:29,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:29,816 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_d5c471f1-b942-451e-992f-b1c6303210ca/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-16 01:59:29,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:29,848 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:29,861 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_d5c471f1-b942-451e-992f-b1c6303210ca/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-16 01:59:29,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:29,884 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:29,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29 WrapperNode [2021-10-16 01:59:29,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:29,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:29,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:29,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:29,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:29,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:29,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:29,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:29,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:29,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:29,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:29,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:29,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (1/1) ... [2021-10-16 01:59:29,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:29,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:29,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:30,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:30,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:59:30,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:30,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:30,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:30,433 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 01:59:30,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:30 BoogieIcfgContainer [2021-10-16 01:59:30,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:30,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:30,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:30,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:30,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:29" (1/3) ... [2021-10-16 01:59:30,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459163a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:30, skipping insertion in model container [2021-10-16 01:59:30,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:29" (2/3) ... [2021-10-16 01:59:30,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459163a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:30, skipping insertion in model container [2021-10-16 01:59:30,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:30" (3/3) ... [2021-10-16 01:59:30,444 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-10-16 01:59:30,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:30,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:59:30,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:30,523 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, mConcurrency=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 [2021-10-16 01:59:30,523 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:59:30,541 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) [2021-10-16 01:59:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 01:59:30,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:30,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 01:59:30,552 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:30,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:30,563 INFO L82 PathProgramCache]: Analyzing trace with hash 86253018, now seen corresponding path program 1 times [2021-10-16 01:59:30,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:30,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030451790] [2021-10-16 01:59:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:30,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:59:30,730 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 01:59:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:59:30,808 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 01:59:30,811 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 01:59:30,812 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:59:30,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:59:30,821 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:59:30,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:59:30 BoogieIcfgContainer [2021-10-16 01:59:30,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:59:30,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:59:30,853 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:59:30,853 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:59:30,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:30" (3/4) ... [2021-10-16 01:59:30,857 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 01:59:30,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:59:30,861 INFO L168 Benchmark]: Toolchain (without parser) took 1256.21 ms. Allocated memory is still 138.4 MB. Free memory was 97.0 MB in the beginning and 78.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:30,863 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 138.4 MB. Free memory was 113.4 MB in the beginning and 113.3 MB in the end (delta: 85.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:30,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.92 ms. Allocated memory is still 138.4 MB. Free memory was 96.8 MB in the beginning and 110.8 MB in the end (delta: -14.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:30,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.96 ms. Allocated memory is still 138.4 MB. Free memory was 110.8 MB in the beginning and 109.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:30,866 INFO L168 Benchmark]: Boogie Preprocessor took 24.38 ms. Allocated memory is still 138.4 MB. Free memory was 109.2 MB in the beginning and 108.3 MB in the end (delta: 877.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:30,867 INFO L168 Benchmark]: RCFGBuilder took 486.70 ms. Allocated memory is still 138.4 MB. Free memory was 108.3 MB in the beginning and 93.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:30,873 INFO L168 Benchmark]: TraceAbstraction took 411.13 ms. Allocated memory is still 138.4 MB. Free memory was 93.2 MB in the beginning and 79.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:30,875 INFO L168 Benchmark]: Witness Printer took 4.97 ms. Allocated memory is still 138.4 MB. Free memory was 79.4 MB in the beginning and 78.9 MB in the end (delta: 438.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:30,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 138.4 MB. Free memory was 113.4 MB in the beginning and 113.3 MB in the end (delta: 85.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.92 ms. Allocated memory is still 138.4 MB. Free memory was 96.8 MB in the beginning and 110.8 MB in the end (delta: -14.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.96 ms. Allocated memory is still 138.4 MB. Free memory was 110.8 MB in the beginning and 109.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.38 ms. Allocated memory is still 138.4 MB. Free memory was 109.2 MB in the beginning and 108.3 MB in the end (delta: 877.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 486.70 ms. Allocated memory is still 138.4 MB. Free memory was 108.3 MB in the beginning and 93.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 411.13 ms. Allocated memory is still 138.4 MB. Free memory was 93.2 MB in the beginning and 79.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.97 ms. Allocated memory is still 138.4 MB. Free memory was 79.4 MB in the beginning and 78.9 MB in the end (delta: 438.9 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 304.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 13.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.0ms SsaConstructionTime, 73.5ms SatisfiabilityAnalysisTime, 0.0ms 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 [2021-10-16 01:59:30,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 01:59:33,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:33,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:33,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:33,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:33,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:33,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:33,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:33,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:33,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:33,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:33,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:33,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:33,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:33,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:33,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:33,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:33,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:33,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:33,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:33,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:33,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:33,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:33,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:33,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:33,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:33,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:33,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:33,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:33,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:33,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:33,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:33,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:33,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:33,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:33,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:33,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:33,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:33,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:33,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:33,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:33,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:59:33,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:33,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:33,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:33,522 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:33,523 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:33,523 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:33,524 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:33,524 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:33,525 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:33,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:33,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:33,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:33,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:33,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:33,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:33,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:33,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:33,530 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:59:33,530 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:59:33,530 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:33,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:33,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:33,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:33,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:33,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:59:33,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:33,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:33,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:33,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:33,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:33,534 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:59:33,535 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:59:33,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:33,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:33,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:33,536 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_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71d15b3186fc16a974d38e1f9340cf7de3285c68 [2021-10-16 01:59:33,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:33,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:33,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:33,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:33,912 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:33,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-16 01:59:33,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data/3e314fdbe/21324a8508df4bb183ed9d0ef4ab0d82/FLAG1b8992ff1 [2021-10-16 01:59:34,573 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:34,573 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-16 01:59:34,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data/3e314fdbe/21324a8508df4bb183ed9d0ef4ab0d82/FLAG1b8992ff1 [2021-10-16 01:59:34,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/data/3e314fdbe/21324a8508df4bb183ed9d0ef4ab0d82 [2021-10-16 01:59:34,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:34,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:34,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:34,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:34,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:34,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:34" (1/1) ... [2021-10-16 01:59:34,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2164292f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:34, skipping insertion in model container [2021-10-16 01:59:34,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:34" (1/1) ... [2021-10-16 01:59:34,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:34,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:35,116 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_d5c471f1-b942-451e-992f-b1c6303210ca/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-16 01:59:35,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:35,191 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:35,221 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_d5c471f1-b942-451e-992f-b1c6303210ca/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-16 01:59:35,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:35,254 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:35,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35 WrapperNode [2021-10-16 01:59:35,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:35,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:35,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:35,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:35,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:35,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:35,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:35,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:35,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:35,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:35,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:35,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:35,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (1/1) ... [2021-10-16 01:59:35,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:35,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:35,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:35,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:59:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:44,504 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:44,505 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 01:59:44,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:44 BoogieIcfgContainer [2021-10-16 01:59:44,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:44,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:44,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:44,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:44,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:34" (1/3) ... [2021-10-16 01:59:44,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f9ca34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:44, skipping insertion in model container [2021-10-16 01:59:44,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:35" (2/3) ... [2021-10-16 01:59:44,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f9ca34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:44, skipping insertion in model container [2021-10-16 01:59:44,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:44" (3/3) ... [2021-10-16 01:59:44,519 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-10-16 01:59:44,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:44,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:59:44,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:44,596 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, mConcurrency=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 [2021-10-16 01:59:44,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:59:44,608 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) [2021-10-16 01:59:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 01:59:44,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:44,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:44,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:44,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:44,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-16 01:59:44,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:44,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852315589] [2021-10-16 01:59:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:44,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:44,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:44,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:44,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:59:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:46,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 01:59:46,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:46,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:46,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:46,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852315589] [2021-10-16 01:59:46,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852315589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:46,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:46,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:59:46,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836245627] [2021-10-16 01:59:46,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:59:46,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:46,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:59:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:46,814 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) [2021-10-16 01:59:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:46,830 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-16 01:59:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:59:46,832 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 [2021-10-16 01:59:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:46,840 INFO L225 Difference]: With dead ends: 34 [2021-10-16 01:59:46,841 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 01:59:46,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 01:59:46,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 01:59:46,874 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) [2021-10-16 01:59:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-16 01:59:46,876 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-16 01:59:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:46,877 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-16 01:59:46,877 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) [2021-10-16 01:59:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-16 01:59:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 01:59:46,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:46,879 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:46,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:47,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:47,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:47,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:47,094 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-16 01:59:47,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:47,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186484303] [2021-10-16 01:59:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:47,096 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:47,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:47,098 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:47,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:59:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:48,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 01:59:48,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:49,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:00,544 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 [2021-10-16 02:00:02,616 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 [2021-10-16 02:00:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:18,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:18,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186484303] [2021-10-16 02:00:18,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186484303] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:18,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:18,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:00:18,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251036329] [2021-10-16 02:00:18,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:00:18,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:00:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2021-10-16 02:00:18,713 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) [2021-10-16 02:00:21,704 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 [2021-10-16 02:00:48,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:48,148 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-10-16 02:00:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:00:48,224 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 [2021-10-16 02:00:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:48,225 INFO L225 Difference]: With dead ends: 32 [2021-10-16 02:00:48,225 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 02:00:48,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16967.9ms TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2021-10-16 02:00:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 02:00:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-16 02:00:48,231 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) [2021-10-16 02:00:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-16 02:00:48,232 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-10-16 02:00:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:48,232 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-16 02:00:48,233 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) [2021-10-16 02:00:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-16 02:00:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:00:48,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:48,234 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:48,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 02:00:48,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:48,441 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-10-16 02:00:48,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:48,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419543244] [2021-10-16 02:00:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:48,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:48,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:48,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:48,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:00:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:51,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 02:00:51,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:43,024 WARN L207 SmtUtils]: Spent 13.90 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-16 02:02:24,245 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 [2021-10-16 02:02:26,319 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 [2021-10-16 02:02:54,479 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 [2021-10-16 02:02:56,554 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 [2021-10-16 02:03:02,453 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:03:08,273 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:03:14,042 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:03:19,851 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:03:25,614 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-16 02:03:31,042 WARN L207 SmtUtils]: Spent 5.43 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:03:33,531 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 [2021-10-16 02:03:39,429 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:03:47,476 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:03:53,170 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:03:58,802 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:04:04,416 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:04:10,061 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-16 02:04:15,739 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-16 02:04:21,454 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-16 02:04:29,611 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:04:37,693 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:04:43,364 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:04:49,033 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:04:54,644 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:04:59,880 WARN L207 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:05:05,516 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-16 02:05:13,561 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:05:19,188 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:05:24,837 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:05:30,493 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:05:35,718 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:05:41,358 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-16 02:05:47,001 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:05:52,639 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:05:58,256 WARN L207 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:06:03,895 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-16 02:06:09,544 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:06:15,184 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:06:20,934 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:06:26,805 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:06:32,666 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:06:38,433 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:06:44,341 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:06:50,239 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:06:56,038 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-16 02:07:01,766 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-16 02:07:07,644 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:07:13,389 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-16 02:07:15,927 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 [2021-10-16 02:07:18,239 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 [2021-10-16 02:07:26,476 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:07:34,817 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:07:40,643 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-16 02:07:46,367 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:07:48,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-16 02:07:48,513 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-16 02:07:48,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:48,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419543244] [2021-10-16 02:07:48,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/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") [2021-10-16 02:07:48,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2114864481] [2021-10-16 02:07:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:48,518 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:48,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:07:48,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:07:48,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:07:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:53,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:07:53,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:53,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:07:53,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922056934] [2021-10-16 02:07:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:53,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:53,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:53,851 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:07:53,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:10:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:33,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 02:10:33,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:33,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:10:33,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:33,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:10:33,774 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:10:33,774 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:10:33,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:33,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-16 02:10:34,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:34,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:34,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c471f1-b942-451e-992f-b1c6303210ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:10:34,391 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:10:34,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:10:34 BoogieIcfgContainer [2021-10-16 02:10:34,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:10:34,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:10:34,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:10:34,403 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:10:34,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:44" (3/4) ... [2021-10-16 02:10:34,407 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:10:34,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:10:34,408 INFO L168 Benchmark]: Toolchain (without parser) took 659485.60 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 28.5 MB in the beginning and 32.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:34,409 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:10:34,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.54 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 28.4 MB in the beginning and 59.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:34,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.78 ms. Allocated memory is still 77.6 MB. Free memory was 58.9 MB in the beginning and 57.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:34,410 INFO L168 Benchmark]: Boogie Preprocessor took 36.19 ms. Allocated memory is still 77.6 MB. Free memory was 57.3 MB in the beginning and 55.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:10:34,411 INFO L168 Benchmark]: RCFGBuilder took 9166.40 ms. Allocated memory is still 77.6 MB. Free memory was 55.9 MB in the beginning and 45.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:34,411 INFO L168 Benchmark]: TraceAbstraction took 649891.81 ms. Allocated memory is still 77.6 MB. Free memory was 44.9 MB in the beginning and 32.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:10:34,412 INFO L168 Benchmark]: Witness Printer took 4.26 ms. Allocated memory is still 77.6 MB. Free memory is still 32.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:10:34,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.54 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 28.4 MB in the beginning and 59.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.78 ms. Allocated memory is still 77.6 MB. Free memory was 58.9 MB in the beginning and 57.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.19 ms. Allocated memory is still 77.6 MB. Free memory was 57.3 MB in the beginning and 55.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 9166.40 ms. Allocated memory is still 77.6 MB. Free memory was 55.9 MB in the beginning and 45.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 649891.81 ms. Allocated memory is still 77.6 MB. Free memory was 44.9 MB in the beginning and 32.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.26 ms. Allocated memory is still 77.6 MB. Free memory is still 32.3 MB. 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 649802.4ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 29562.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 0 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 26389.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16968.0ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.4ms SsaConstructionTime, 3373.2ms SatisfiabilityAnalysisTime, 30284.9ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 7 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 9 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...