./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE --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 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 ........................................................................................................................................................................................................................................................................................................................................ 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_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE --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 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:47:34,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:47:34,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:47:34,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:47:34,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:47:34,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:47:34,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:47:34,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:47:34,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:47:34,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:47:34,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:47:34,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:47:34,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:47:34,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:47:34,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:47:34,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:47:34,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:47:34,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:47:34,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:47:34,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:47:34,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:47:34,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:47:34,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:47:34,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:47:34,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:47:34,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:47:34,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:47:34,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:47:34,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:47:34,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:47:34,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:47:34,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:47:34,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:47:34,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:47:34,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:47:34,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:47:34,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:47:34,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:47:34,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:47:34,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:47:34,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:47:34,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:47:34,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:47:34,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:47:34,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:47:34,625 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:47:34,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:47:34,626 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:47:34,626 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:47:34,626 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:47:34,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:47:34,627 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:47:34,627 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:47:34,627 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:47:34,628 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:47:34,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:47:34,628 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:47:34,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:47:34,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:47:34,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:47:34,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:47:34,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:47:34,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:47:34,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:47:34,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:47:34,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:47:34,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:47:34,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:47:34,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:47:34,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:47:34,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:47:34,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:47:34,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:47:34,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:47:34,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:47:34,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:47:34,634 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:47:34,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:47:34,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:47:34,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:47:34,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:47:34,636 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_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 [2021-10-24 09:47:34,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:47:34,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:47:34,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:47:34,953 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:47:34,954 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:47:34,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-24 09:47:35,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data/a3f36872b/4ada5a598a3d47dfae95637fd3b904bc/FLAGd1cb1cb28 [2021-10-24 09:47:35,625 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:47:35,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-24 09:47:35,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data/a3f36872b/4ada5a598a3d47dfae95637fd3b904bc/FLAGd1cb1cb28 [2021-10-24 09:47:35,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data/a3f36872b/4ada5a598a3d47dfae95637fd3b904bc [2021-10-24 09:47:35,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:47:35,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:47:35,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:47:35,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:47:35,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:47:36,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:35" (1/1) ... [2021-10-24 09:47:36,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b8abe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36, skipping insertion in model container [2021-10-24 09:47:36,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:35" (1/1) ... [2021-10-24 09:47:36,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:47:36,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:47:36,298 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_a9652b76-db76-4973-b080-839321c0126a/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2021-10-24 09:47:36,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:47:36,318 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:47:36,344 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_a9652b76-db76-4973-b080-839321c0126a/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2021-10-24 09:47:36,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:47:36,364 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:47:36,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36 WrapperNode [2021-10-24 09:47:36,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:47:36,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:47:36,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:47:36,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:47:36,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:47:36,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:47:36,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:47:36,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:47:36,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:47:36,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:47:36,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:47:36,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:47:36,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (1/1) ... [2021-10-24 09:47:36,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:47:36,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:47:36,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:47:36,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:47:36,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:47:36,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:47:36,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:47:36,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:47:36,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:47:36,865 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 09:47:36,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:36 BoogieIcfgContainer [2021-10-24 09:47:36,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:47:36,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:47:36,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:47:36,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:47:36,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:47:35" (1/3) ... [2021-10-24 09:47:36,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366c02f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:36, skipping insertion in model container [2021-10-24 09:47:36,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:36" (2/3) ... [2021-10-24 09:47:36,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366c02f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:36, skipping insertion in model container [2021-10-24 09:47:36,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:36" (3/3) ... [2021-10-24 09:47:36,884 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-24 09:47:36,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:47:36,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:47:36,954 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:47:36,962 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:47:36,968 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:47:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) [2021-10-24 09:47:37,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:47:37,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:37,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:37,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:47:37,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:37,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1746364850, now seen corresponding path program 1 times [2021-10-24 09:47:37,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:37,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918948307] [2021-10-24 09:47:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:37,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:37,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:47:37,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918948307] [2021-10-24 09:47:37,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918948307] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:37,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:37,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 09:47:37,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230788590] [2021-10-24 09:47:37,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:47:37,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:47:37,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:47:37,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:47:37,356 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-24 09:47:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:47:37,427 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-10-24 09:47:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:47:37,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:47:37,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:47:37,440 INFO L225 Difference]: With dead ends: 43 [2021-10-24 09:47:37,440 INFO L226 Difference]: Without dead ends: 35 [2021-10-24 09:47:37,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:47:37,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-24 09:47:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2021-10-24 09:47:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2021-10-24 09:47:37,527 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 11 [2021-10-24 09:47:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:47:37,528 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-10-24 09:47:37,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-24 09:47:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2021-10-24 09:47:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:47:37,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:37,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:37,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:47:37,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:47:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:37,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1729354189, now seen corresponding path program 1 times [2021-10-24 09:47:37,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:47:37,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695113277] [2021-10-24 09:47:37,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:37,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:47:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:47:37,576 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:47:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:47:37,632 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:47:37,633 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:47:37,635 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:47:37,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:47:37,646 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:47:37,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:47:37 BoogieIcfgContainer [2021-10-24 09:47:37,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:47:37,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:47:37,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:47:37,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:47:37,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:36" (3/4) ... [2021-10-24 09:47:37,689 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 09:47:37,689 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:47:37,692 INFO L168 Benchmark]: Toolchain (without parser) took 1705.53 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 59.6 MB in the beginning and 84.6 MB in the end (delta: -25.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:47:37,693 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 67.0 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:47:37,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.36 ms. Allocated memory is still 94.4 MB. Free memory was 59.4 MB in the beginning and 69.2 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:47:37,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.70 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 67.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:47:37,696 INFO L168 Benchmark]: Boogie Preprocessor took 29.89 ms. Allocated memory is still 94.4 MB. Free memory was 67.6 MB in the beginning and 66.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:47:37,697 INFO L168 Benchmark]: RCFGBuilder took 432.17 ms. Allocated memory is still 94.4 MB. Free memory was 66.4 MB in the beginning and 55.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:47:37,698 INFO L168 Benchmark]: TraceAbstraction took 812.07 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 54.6 MB in the beginning and 85.3 MB in the end (delta: -30.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:47:37,699 INFO L168 Benchmark]: Witness Printer took 6.15 ms. Allocated memory is still 113.2 MB. Free memory was 85.3 MB in the beginning and 84.6 MB in the end (delta: 633.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:47:37,704 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 67.0 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 372.36 ms. Allocated memory is still 94.4 MB. Free memory was 59.4 MB in the beginning and 69.2 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.70 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 67.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.89 ms. Allocated memory is still 94.4 MB. Free memory was 67.6 MB in the beginning and 66.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 432.17 ms. Allocated memory is still 94.4 MB. Free memory was 66.4 MB in the beginning and 55.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 812.07 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 54.6 MB in the beginning and 85.3 MB in the end (delta: -30.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.15 ms. Allocated memory is still 113.2 MB. Free memory was 85.3 MB in the beginning and 84.6 MB in the end (delta: 633.2 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: 101]: 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 85, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 88. Possible FailurePath: [L1] int __return_main; [L11] double _EPS = 0.0000010; [L14] double __return_125; [L17] double main__d; [L18] double main__r; [L19] main__d = 1.0 VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L21] COND TRUE main__d <= 20.0 [L24] double __tmp_1; [L25] __tmp_1 = main__d [L26] double SqrtR__Input; [L27] SqrtR__Input = __tmp_1 [L28] double SqrtR__xn; [L29] double SqrtR__xnp1; [L30] double SqrtR__residu; [L31] double SqrtR__lsup; [L32] double SqrtR__linf; [L33] int SqrtR__i; [L34] int SqrtR__cond; [L35] COND FALSE !(SqrtR__Input <= 1.0) [L139] SqrtR__xn = 1.0 / SqrtR__Input [L39] SqrtR__xnp1 = SqrtR__xn [L40] SqrtR__residu = (2.0 * _EPS) * (SqrtR__xn + SqrtR__xnp1) [L41] SqrtR__lsup = _EPS * (SqrtR__xn + SqrtR__xnp1) [L42] SqrtR__linf = -SqrtR__lsup [L43] int SqrtR____CPAchecker_TMP_0; VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L44] COND FALSE !(SqrtR__residu > SqrtR__lsup) VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L126] COND FALSE !(SqrtR__residu < SqrtR__linf) [L132] SqrtR____CPAchecker_TMP_0 = 0 VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L49] SqrtR__cond = SqrtR____CPAchecker_TMP_0 [L50] SqrtR__i = 0 VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L52] COND FALSE !(!(SqrtR__cond == 0)) [L85] __return_125 = 1.0 / SqrtR__xnp1 [L86] main__r = __return_125 [L87] int main____CPAchecker_TMP_0; VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L88] COND FALSE !(main__r >= 1.0) VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L114] main____CPAchecker_TMP_0 = 0 VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L95] int __tmp_2; [L96] __tmp_2 = main____CPAchecker_TMP_0 [L97] int __VERIFIER_assert__cond; [L98] __VERIFIER_assert__cond = __tmp_2 VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L99] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L101] reach_error() VAL [__return_125=49, __return_main=0, _EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 697.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 17.2ms, AutomataDifference: 110.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 41 SDslu, 48 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 65.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.7ms SsaConstructionTime, 57.5ms SatisfiabilityAnalysisTime, 120.1ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 09:47:37,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/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-e943c26 [2021-10-24 09:47:40,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:47:40,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:47:40,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:47:40,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:47:40,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:47:40,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:47:40,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:47:40,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:47:40,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:47:40,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:47:40,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:47:40,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:47:40,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:47:40,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:47:40,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:47:40,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:47:40,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:47:40,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:47:40,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:47:40,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:47:40,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:47:40,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:47:40,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:47:40,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:47:40,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:47:40,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:47:40,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:47:40,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:47:40,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:47:40,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:47:40,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:47:40,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:47:40,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:47:40,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:47:40,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:47:40,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:47:40,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:47:40,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:47:40,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:47:40,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:47:40,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:47:40,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:47:40,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:47:40,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:47:40,837 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:47:40,837 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:47:40,837 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:47:40,838 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:47:40,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:47:40,838 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:47:40,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:47:40,842 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:47:40,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:47:40,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:47:40,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:47:40,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:47:40,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:47:40,844 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:47:40,845 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:47:40,845 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:47:40,845 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:47:40,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:47:40,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:47:40,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:47:40,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:47:40,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:47:40,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:47:40,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:47:40,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:47:40,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:47:40,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:47:40,848 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:47:40,849 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:47:40,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:47:40,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:47:40,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:47:40,850 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_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 [2021-10-24 09:47:41,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:47:41,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:47:41,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:47:41,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:47:41,389 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:47:41,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-24 09:47:41,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data/05495a809/5d218a72afc34c4699afead9bee52cd0/FLAG98f876ef7 [2021-10-24 09:47:42,139 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:47:42,145 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-24 09:47:42,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data/05495a809/5d218a72afc34c4699afead9bee52cd0/FLAG98f876ef7 [2021-10-24 09:47:42,477 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/data/05495a809/5d218a72afc34c4699afead9bee52cd0 [2021-10-24 09:47:42,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:47:42,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:47:42,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:47:42,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:47:42,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:47:42,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5ea856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42, skipping insertion in model container [2021-10-24 09:47:42,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:47:42,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:47:42,729 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_a9652b76-db76-4973-b080-839321c0126a/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2021-10-24 09:47:42,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:47:42,752 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:47:42,786 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_a9652b76-db76-4973-b080-839321c0126a/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2021-10-24 09:47:42,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:47:42,813 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:47:42,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42 WrapperNode [2021-10-24 09:47:42,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:47:42,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:47:42,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:47:42,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:47:42,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:47:42,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:47:42,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:47:42,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:47:42,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:47:42,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:47:42,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:47:42,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:47:42,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (1/1) ... [2021-10-24 09:47:42,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:47:42,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:47:42,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:47:42,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:47:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:47:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:47:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:47:43,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:47:51,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:47:51,810 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 09:47:51,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:51 BoogieIcfgContainer [2021-10-24 09:47:51,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:47:51,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:47:51,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:47:51,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:47:51,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:47:42" (1/3) ... [2021-10-24 09:47:51,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20292fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:51, skipping insertion in model container [2021-10-24 09:47:51,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:42" (2/3) ... [2021-10-24 09:47:51,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20292fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:51, skipping insertion in model container [2021-10-24 09:47:51,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:51" (3/3) ... [2021-10-24 09:47:51,824 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-24 09:47:51,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:47:51,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:47:51,896 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:47:51,904 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:47:51,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:47:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:47:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 09:47:51,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:47:51,931 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:47:51,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:47:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:47:51,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2001896247, now seen corresponding path program 1 times [2021-10-24 09:47:51,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:47:51,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824411890] [2021-10-24 09:47:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:47:51,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:47:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:47:51,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:47:51,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:47:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:47:54,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:47:54,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:47:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:55,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:47:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:47:55,587 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:47:55,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824411890] [2021-10-24 09:47:55,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824411890] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:47:55,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:47:55,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:47:55,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457785094] [2021-10-24 09:47:55,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:47:55,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:47:55,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:47:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:47:55,620 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-24 09:48:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:17,995 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2021-10-24 09:48:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:48:17,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 14 [2021-10-24 09:48:17,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:18,009 INFO L225 Difference]: With dead ends: 50 [2021-10-24 09:48:18,009 INFO L226 Difference]: Without dead ends: 25 [2021-10-24 09:48:18,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 489.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:48:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-24 09:48:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-10-24 09:48:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2021-10-24 09:48:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-10-24 09:48:18,048 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2021-10-24 09:48:18,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:18,048 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-10-24 09:48:18,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-24 09:48:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-10-24 09:48:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 09:48:18,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:18,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:18,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 09:48:18,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:48:18,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:48:18,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:18,267 INFO L82 PathProgramCache]: Analyzing trace with hash 939018830, now seen corresponding path program 1 times [2021-10-24 09:48:18,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:48:18,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358352475] [2021-10-24 09:48:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:18,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:48:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:48:18,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:48:18,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:48:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:20,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:48:20,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:48:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:21,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:48:27,734 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~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))) is different from false [2021-10-24 09:48:29,807 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~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))) is different from true [2021-10-24 09:48:33,983 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (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))) is different from false [2021-10-24 09:48:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:36,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:48:36,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358352475] [2021-10-24 09:48:36,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358352475] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:36,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:36,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 09:48:36,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732001160] [2021-10-24 09:48:36,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 09:48:36,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:48:36,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 09:48:36,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=20, Unknown=3, NotChecked=18, Total=56 [2021-10-24 09:48:36,500 INFO L87 Difference]: Start difference. First operand 23 states and 31 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) [2021-10-24 09:48:38,980 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~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))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~SqrtR__xn~0)) is different from true [2021-10-24 09:49:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:11,169 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2021-10-24 09:49:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:49:11,171 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 14 [2021-10-24 09:49:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:11,173 INFO L225 Difference]: With dead ends: 68 [2021-10-24 09:49:11,173 INFO L226 Difference]: Without dead ends: 49 [2021-10-24 09:49:11,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 9178.0ms TimeCoverageRelationStatistics Valid=17, Invalid=21, Unknown=4, NotChecked=30, Total=72 [2021-10-24 09:49:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-24 09:49:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 25. [2021-10-24 09:49:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:49:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-10-24 09:49:11,182 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-10-24 09:49:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:11,182 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-10-24 09:49:11,182 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) [2021-10-24 09:49:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-10-24 09:49:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 09:49:11,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:11,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:11,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-24 09:49:11,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:49:11,389 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:11,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1251138159, now seen corresponding path program 1 times [2021-10-24 09:49:11,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:49:11,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512305983] [2021-10-24 09:49:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:11,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:49:11,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:49:11,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:49:11,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:49:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:13,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:49:13,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:49:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:13,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:49:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:13,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:49:13,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512305983] [2021-10-24 09:49:13,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512305983] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:13,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:13,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:49:13,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122130911] [2021-10-24 09:49:13,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:49:13,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:49:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:49:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:49:13,999 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-24 09:49:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:22,706 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2021-10-24 09:49:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:49:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 14 [2021-10-24 09:49:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:22,708 INFO L225 Difference]: With dead ends: 46 [2021-10-24 09:49:22,708 INFO L226 Difference]: Without dead ends: 27 [2021-10-24 09:49:22,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 519.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:49:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-24 09:49:22,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-24 09:49:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:49:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-24 09:49:22,716 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2021-10-24 09:49:22,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:22,717 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-24 09:49:22,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-24 09:49:22,717 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-24 09:49:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 09:49:22,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:22,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:22,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:49:22,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:49:22,919 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:22,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1124243894, now seen corresponding path program 1 times [2021-10-24 09:49:22,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:49:22,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306016452] [2021-10-24 09:49:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:22,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:49:22,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:49:22,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:49:22,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:49:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:27,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 09:49:27,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:49:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:29,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:49:37,290 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))) is different from false [2021-10-24 09:49:39,720 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))) is different from true [2021-10-24 09:50:05,965 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from false [2021-10-24 09:50:08,202 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from true [2021-10-24 09:50:14,910 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from false [2021-10-24 09:50:17,143 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from true [2021-10-24 09:50:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:20,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:50:20,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306016452] [2021-10-24 09:50:20,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306016452] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:20,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:20,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-24 09:50:20,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555291311] [2021-10-24 09:50:20,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 09:50:20,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:50:20,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 09:50:20,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=48, Unknown=6, NotChecked=48, Total=132 [2021-10-24 09:50:20,389 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 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) [2021-10-24 09:50:22,840 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_main_~main__d~0 .cse0) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse1 .cse0)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse1 .cse1))))))) is different from true [2021-10-24 09:50:25,098 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse1 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-24 09:50:27,579 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse1 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse1 c_ULTIMATE.start_main_~SqrtR__xn~0))) is different from true [2021-10-24 09:51:53,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:53,225 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2021-10-24 09:51:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:51:53,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 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 18 [2021-10-24 09:51:53,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:53,242 INFO L225 Difference]: With dead ends: 78 [2021-10-24 09:51:53,243 INFO L226 Difference]: Without dead ends: 57 [2021-10-24 09:51:53,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 25169.6ms TimeCoverageRelationStatistics Valid=36, Invalid=51, Unknown=9, NotChecked=114, Total=210 [2021-10-24 09:51:53,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-24 09:51:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 31. [2021-10-24 09:51:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 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) [2021-10-24 09:51:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-10-24 09:51:53,252 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2021-10-24 09:51:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:53,253 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-10-24 09:51:53,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 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) [2021-10-24 09:51:53,254 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-10-24 09:51:53,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 09:51:53,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:53,255 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:53,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:53,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:53,473 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:53,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1669842835, now seen corresponding path program 1 times [2021-10-24 09:51:53,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:53,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094842021] [2021-10-24 09:51:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:53,475 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:53,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:53,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:53,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 09:51:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:57,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:51:57,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:51:57,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:51:58,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:58,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094842021] [2021-10-24 09:51:58,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094842021] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:58,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:58,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:51:58,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640939000] [2021-10-24 09:51:58,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:51:58,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:58,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:51:58,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:51:58,154 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-24 09:52:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:52:05,016 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2021-10-24 09:52:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:52:05,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 18 [2021-10-24 09:52:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:52:05,018 INFO L225 Difference]: With dead ends: 64 [2021-10-24 09:52:05,018 INFO L226 Difference]: Without dead ends: 62 [2021-10-24 09:52:05,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 730.5ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:52:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-24 09:52:05,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 33. [2021-10-24 09:52:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-10-24 09:52:05,030 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 18 [2021-10-24 09:52:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:52:05,030 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-10-24 09:52:05,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-24 09:52:05,031 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-10-24 09:52:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 09:52:05,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:52:05,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:52:05,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-24 09:52:05,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:52:05,241 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:52:05,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:52:05,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1686853496, now seen corresponding path program 1 times [2021-10-24 09:52:05,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:52:05,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640788350] [2021-10-24 09:52:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:05,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:52:05,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:52:05,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:52:05,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 09:52:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:52:09,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:52:09,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:52:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:52:13,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:52:20,141 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xnp1~0) .cse0)) is different from false [2021-10-24 09:52:22,358 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xnp1~0) .cse0)) is different from true [2021-10-24 09:52:39,597 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:52:42,149 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2021-10-24 09:52:44,749 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2021-10-24 09:52:49,970 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:52:55,189 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:53:00,439 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:53:05,646 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:53:12,784 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2021-10-24 09:53:15,183 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2021-10-24 09:53:22,333 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2021-10-24 09:53:24,698 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2021-10-24 09:53:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-24 09:53:24,712 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:53:24,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640788350] [2021-10-24 09:53:24,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640788350] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:53:24,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1333727226] [2021-10-24 09:53:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:53:24,713 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:53:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:53:24,715 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:53:24,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-24 09:53:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:53:29,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:53:29,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:53:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:53:31,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:53:53,776 WARN L207 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:53:58,987 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:54:04,286 WARN L207 SmtUtils]: Spent 5.30 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:54:09,547 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:54:14,786 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:54:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-24 09:54:24,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1333727226] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:54:24,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952128945] [2021-10-24 09:54:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:24,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:54:24,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:54:24,380 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:54:24,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-24 09:56:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:47,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-24 09:56:47,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:59,773 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_main_~SqrtR__lsup~0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))) (= .cse0 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0))) is different from true [2021-10-24 09:57:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:57:01,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:24,657 WARN L207 SmtUtils]: Spent 5.36 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:57:29,989 WARN L207 SmtUtils]: Spent 5.33 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:57:35,337 WARN L207 SmtUtils]: Spent 5.35 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:57:41,746 WARN L207 SmtUtils]: Spent 6.40 s on a formula simplification that was a NOOP. DAG size: 4 [2021-10-24 09:57:47,124 WARN L207 SmtUtils]: Spent 5.38 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:57:49,818 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 c_ULTIMATE.start_main_~SqrtR__lsup~0))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from false [2021-10-24 09:57:52,423 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 c_ULTIMATE.start_main_~SqrtR__lsup~0))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from true [2021-10-24 09:57:58,858 WARN L207 SmtUtils]: Spent 6.42 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-24 09:58:04,200 WARN L207 SmtUtils]: Spent 5.34 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-24 09:58:06,831 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from false [2021-10-24 09:58:09,485 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from true [2021-10-24 09:58:19,917 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-24 09:58:22,349 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1))))))) is different from false [2021-10-24 09:58:24,772 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1))))))) is different from true [2021-10-24 09:58:30,447 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-24 09:58:37,719 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse0 .cse0)))))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse1))) is different from false [2021-10-24 09:58:40,108 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse0 .cse0)))))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse1))) is different from true [2021-10-24 09:58:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-24 09:58:40,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952128945] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:58:40,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 09:58:40,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 9, 9] total 22 [2021-10-24 09:58:40,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504635681] [2021-10-24 09:58:40,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-24 09:58:40,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:40,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-24 09:58:40,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=115, Unknown=17, NotChecked=270, Total=462 [2021-10-24 09:58:40,179 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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) [2021-10-24 09:58:45,095 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) (and (= c_ULTIMATE.start_main_~main__d~0 .cse0) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1)))))) .cse2) (= c_currentRoundingMode roundNearestTiesToEven) .cse2))) is different from true [2021-10-24 09:58:47,530 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.geq (fp.div c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse2) .cse2) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse2) .cse2))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse2))) (and .cse0 (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or .cse0 (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1))))))) (= .cse2 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-10-24 09:58:50,204 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse0 c_ULTIMATE.start_main_~SqrtR__Input~0) (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))))) .cse1) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0) .cse1))) is different from true [2021-10-24 09:58:52,898 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.geq (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse1))) (and (= c_ULTIMATE.start_main_~SqrtR__lsup~0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))) (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 c_ULTIMATE.start_main_~SqrtR__lsup~0))) .cse0) (= .cse1 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse1 c_ULTIMATE.start_main_~SqrtR__xn~0) .cse0))) is different from true [2021-10-24 09:58:55,527 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= .cse0 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from true [2021-10-24 09:58:57,780 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq (fp.div c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xnp1~0) .cse0) (= c_ULTIMATE.start_main_~SqrtR__xnp1~0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) .cse0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-24 09:59:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:59:43,880 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2021-10-24 09:59:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 09:59:43,971 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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 18 [2021-10-24 09:59:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:59:43,972 INFO L225 Difference]: With dead ends: 74 [2021-10-24 09:59:43,972 INFO L226 Difference]: Without dead ends: 51 [2021-10-24 09:59:43,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 62054.8ms TimeCoverageRelationStatistics Valid=72, Invalid=121, Unknown=23, NotChecked=540, Total=756 [2021-10-24 09:59:43,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-24 09:59:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2021-10-24 09:59:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 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) [2021-10-24 09:59:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2021-10-24 09:59:43,983 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 18 [2021-10-24 09:59:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:59:43,983 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-10-24 09:59:43,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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) [2021-10-24 09:59:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2021-10-24 09:59:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 09:59:43,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:59:43,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:59:44,201 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2021-10-24 09:59:44,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2021-10-24 09:59:44,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-24 09:59:44,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 09:59:44,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:59:44,650 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:59:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:59:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash 885500251, now seen corresponding path program 1 times [2021-10-24 09:59:44,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:59:44,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353291413] [2021-10-24 09:59:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:59:44,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:59:44,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:59:44,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:59:44,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 09:59:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:59:48,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 09:59:48,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:59:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:59:52,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:00:00,487 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.lt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0)) (fp.neg (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from false [2021-10-24 10:00:02,915 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.lt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0)) (fp.neg (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from true [2021-10-24 10:00:29,395 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.lt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.neg (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))))) is different from false [2021-10-24 10:00:31,641 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.lt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.neg (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))))) is different from true [2021-10-24 10:00:38,394 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.lt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.neg (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))))) is different from false [2021-10-24 10:00:40,650 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.lt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.neg (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))))) is different from true [2021-10-24 10:00:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:00:43,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:00:43,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353291413] [2021-10-24 10:00:43,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353291413] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:00:43,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:00:43,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-24 10:00:43,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230606427] [2021-10-24 10:00:43,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 10:00:43,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:00:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 10:00:43,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=48, Unknown=6, NotChecked=48, Total=132 [2021-10-24 10:00:43,425 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 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) [2021-10-24 10:00:45,863 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_main_~main__d~0 .cse0) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.lt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse1 .cse0)) (fp.neg (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse1 .cse1)))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-24 10:00:48,136 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse0 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.lt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse1 .cse0)) (fp.neg (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse1 .cse1)))))))) is different from true [2021-10-24 10:00:50,603 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.lt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0)) (fp.neg (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse1 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse1 c_ULTIMATE.start_main_~SqrtR__xn~0))) is different from true [2021-10-24 10:01:01,524 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-24 10:01:01,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-24 10:01:01,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-24 10:01:01,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:01:01,726 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-24 10:01:01,729 INFO L168 Benchmark]: Toolchain (without parser) took 799244.87 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 45.0 MB in the beginning and 59.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:01:01,729 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 61.5 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:01:01,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.03 ms. Allocated memory is still 79.7 MB. Free memory was 44.9 MB in the beginning and 63.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:01:01,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.26 ms. Allocated memory is still 79.7 MB. Free memory was 63.4 MB in the beginning and 61.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:01:01,730 INFO L168 Benchmark]: Boogie Preprocessor took 30.06 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 60.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:01:01,731 INFO L168 Benchmark]: RCFGBuilder took 8904.85 ms. Allocated memory is still 79.7 MB. Free memory was 60.2 MB in the beginning and 49.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:01:01,731 INFO L168 Benchmark]: TraceAbstraction took 789912.82 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 48.6 MB in the beginning and 59.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:01:01,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 61.5 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.03 ms. Allocated memory is still 79.7 MB. Free memory was 44.9 MB in the beginning and 63.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.26 ms. Allocated memory is still 79.7 MB. Free memory was 63.4 MB in the beginning and 61.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.06 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 60.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8904.85 ms. Allocated memory is still 79.7 MB. Free memory was 60.2 MB in the beginning and 49.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 789912.82 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 48.6 MB in the beginning and 59.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9652b76-db76-4973-b080-839321c0126a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...