./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7 --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 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:24:32,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:24:32,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:24:32,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:24:32,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:24:32,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:24:32,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:24:32,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:24:32,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:24:32,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:24:32,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:24:32,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:24:32,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:24:32,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:24:32,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:24:32,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:24:32,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:24:32,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:24:32,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:24:32,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:24:32,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:24:32,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:24:32,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:24:32,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:24:32,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:24:32,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:24:32,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:24:32,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:24:32,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:24:32,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:24:32,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:24:32,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:24:32,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:24:32,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:24:32,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:24:32,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:24:32,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:24:32,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:24:32,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:24:32,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:24:32,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:24:32,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:24:32,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:24:32,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:24:32,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:24:32,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:24:32,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:24:32,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:24:32,545 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:24:32,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:24:32,545 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:24:32,545 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:24:32,546 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:24:32,547 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:24:32,547 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:24:32,547 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:24:32,547 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:24:32,548 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:24:32,548 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:24:32,548 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:24:32,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:24:32,549 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:24:32,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:24:32,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:24:32,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:24:32,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:24:32,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:24:32,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:24:32,552 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:24:32,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:24:32,553 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:24:32,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:24:32,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:24:32,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:24:32,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:24:32,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:24:32,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:24:32,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:24:32,555 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:24:32,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:24:32,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:24:32,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:24:32,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:24:32,556 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_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b [2021-11-25 20:24:32,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:24:32,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:24:32,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:24:32,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:24:32,835 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:24:32,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2021-11-25 20:24:32,921 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data/f088e3a9f/2ae1309cafa0498faed8c1c6e7e315b9/FLAGe2548ba9e [2021-11-25 20:24:33,358 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:24:33,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2021-11-25 20:24:33,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data/f088e3a9f/2ae1309cafa0498faed8c1c6e7e315b9/FLAGe2548ba9e [2021-11-25 20:24:33,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data/f088e3a9f/2ae1309cafa0498faed8c1c6e7e315b9 [2021-11-25 20:24:33,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:24:33,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:24:33,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:24:33,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:24:33,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:24:33,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:33,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e84f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33, skipping insertion in model container [2021-11-25 20:24:33,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:33,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:24:33,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:24:33,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2021-11-25 20:24:33,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:24:33,884 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:24:33,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2021-11-25 20:24:33,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:24:33,933 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:24:33,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33 WrapperNode [2021-11-25 20:24:33,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:24:33,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:24:33,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:24:33,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:24:33,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:33,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:33,995 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2021-11-25 20:24:33,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:24:33,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:24:33,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:24:33,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:24:34,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:34,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:34,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:34,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:34,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:34,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:34,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:34,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:24:34,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:24:34,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:24:34,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:24:34,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (1/1) ... [2021-11-25 20:24:34,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:24:34,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:24:34,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:24:34,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:24:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:24:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:24:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:24:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:24:34,185 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:24:34,187 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:24:34,290 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:24:34,341 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:24:34,341 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:24:34,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:34 BoogieIcfgContainer [2021-11-25 20:24:34,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:24:34,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:24:34,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:24:34,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:24:34,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:24:33" (1/3) ... [2021-11-25 20:24:34,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28226229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:34, skipping insertion in model container [2021-11-25 20:24:34,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:33" (2/3) ... [2021-11-25 20:24:34,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28226229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:34, skipping insertion in model container [2021-11-25 20:24:34,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:34" (3/3) ... [2021-11-25 20:24:34,352 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2021-11-25 20:24:34,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:24:34,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:24:34,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:24:34,410 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:24:34,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:24:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:24:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 20:24:34,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:34,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 20:24:34,429 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2617893, now seen corresponding path program 1 times [2021-11-25 20:24:34,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:34,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136931558] [2021-11-25 20:24:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:34,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:24:34,571 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:24:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:24:34,630 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:24:34,632 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:24:34,633 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 20:24:34,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:24:34,638 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 20:24:34,641 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:24:34,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:24:34 BoogieIcfgContainer [2021-11-25 20:24:34,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:24:34,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:24:34,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:24:34,672 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:24:34,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:34" (3/4) ... [2021-11-25 20:24:34,676 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 20:24:34,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:24:34,677 INFO L158 Benchmark]: Toolchain (without parser) took 963.52ms. Allocated memory is still 102.8MB. Free memory was 79.6MB in the beginning and 40.1MB in the end (delta: 39.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-11-25 20:24:34,678 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:24:34,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.16ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 69.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 20:24:34,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.51ms. Allocated memory is still 102.8MB. Free memory was 69.1MB in the beginning and 67.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:24:34,680 INFO L158 Benchmark]: Boogie Preprocessor took 54.16ms. Allocated memory is still 102.8MB. Free memory was 67.3MB in the beginning and 66.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:24:34,681 INFO L158 Benchmark]: RCFGBuilder took 291.44ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 54.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 20:24:34,681 INFO L158 Benchmark]: TraceAbstraction took 318.71ms. Allocated memory is still 102.8MB. Free memory was 54.0MB in the beginning and 40.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 20:24:34,682 INFO L158 Benchmark]: Witness Printer took 11.72ms. Allocated memory is still 102.8MB. Free memory was 40.6MB in the beginning and 40.1MB in the end (delta: 475.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:24:34,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.16ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 69.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.51ms. Allocated memory is still 102.8MB. Free memory was 69.1MB in the beginning and 67.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.16ms. Allocated memory is still 102.8MB. Free memory was 67.3MB in the beginning and 66.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.44ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 54.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 318.71ms. Allocated memory is still 102.8MB. Free memory was 54.0MB in the beginning and 40.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 11.72ms. Allocated memory is still 102.8MB. Free memory was 40.6MB in the beginning and 40.1MB in the end (delta: 475.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: 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 44, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 56. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, r; [L51] d = __VERIFIER_nondet_double() [L52] CALL assume_abort_if_not(d >= 0.1 && d <= 20.0) [L18] COND FALSE !(!cond) [L52] RET assume_abort_if_not(d >= 0.1 && d <= 20.0) [L54] CALL, EXPR SqrtR(d) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [\old(Input)=50, _EPS=1/1000000, cond=0, i=0, Input=50, xn=1, xn=1] [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L54] RET, EXPR SqrtR(d) [L54] r = SqrtR(d) [L56] CALL __VERIFIER_assert(r >= 0.3 && r <= 5.) [L20] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L20] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 20:24:34,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7 --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 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:24:37,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:24:37,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:24:37,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:24:37,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:24:37,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:24:37,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:24:37,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:24:37,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:24:37,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:24:37,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:24:37,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:24:37,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:24:37,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:24:37,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:24:37,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:24:37,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:24:37,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:24:37,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:24:37,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:24:37,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:24:37,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:24:37,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:24:37,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:24:37,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:24:37,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:24:37,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:24:37,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:24:37,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:24:37,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:24:37,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:24:37,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:24:37,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:24:37,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:24:37,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:24:37,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:24:37,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:24:37,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:24:37,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:24:37,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:24:37,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:24:37,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 20:24:37,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:24:37,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:24:37,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:24:37,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:24:37,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:24:37,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:24:37,248 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:24:37,248 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:24:37,248 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:24:37,248 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:24:37,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:24:37,250 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:24:37,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:24:37,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:24:37,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:24:37,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:24:37,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:24:37,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:24:37,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:24:37,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:24:37,253 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 20:24:37,253 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 20:24:37,253 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:24:37,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:24:37,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:24:37,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:24:37,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:24:37,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 20:24:37,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:24:37,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:24:37,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:24:37,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:24:37,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:24:37,256 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 20:24:37,256 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 20:24:37,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:24:37,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:24:37,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:24:37,257 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_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b [2021-11-25 20:24:37,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:24:37,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:24:37,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:24:37,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:24:37,669 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:24:37,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2021-11-25 20:24:37,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data/6fa1c7c00/dd34068285fd4d0b9f02067f78943ee9/FLAGb81e8aa88 [2021-11-25 20:24:38,372 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:24:38,373 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2021-11-25 20:24:38,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data/6fa1c7c00/dd34068285fd4d0b9f02067f78943ee9/FLAGb81e8aa88 [2021-11-25 20:24:38,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/data/6fa1c7c00/dd34068285fd4d0b9f02067f78943ee9 [2021-11-25 20:24:38,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:24:38,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:24:38,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:24:38,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:24:38,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:24:38,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:24:38" (1/1) ... [2021-11-25 20:24:38,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8f3a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:38, skipping insertion in model container [2021-11-25 20:24:38,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:24:38" (1/1) ... [2021-11-25 20:24:38,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:24:38,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:24:38,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2021-11-25 20:24:38,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:24:38,959 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:24:39,027 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2021-11-25 20:24:39,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:24:39,066 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:24:39,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39 WrapperNode [2021-11-25 20:24:39,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:24:39,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:24:39,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:24:39,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:24:39,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,126 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2021-11-25 20:24:39,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:24:39,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:24:39,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:24:39,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:24:39,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:24:39,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:24:39,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:24:39,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:24:39,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (1/1) ... [2021-11-25 20:24:39,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:24:39,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:24:39,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:24:39,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:24:39,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:24:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 20:24:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:24:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:24:39,351 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:24:39,353 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:24:46,650 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:24:46,657 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:24:46,657 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:24:46,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:46 BoogieIcfgContainer [2021-11-25 20:24:46,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:24:46,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:24:46,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:24:46,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:24:46,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:24:38" (1/3) ... [2021-11-25 20:24:46,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a067af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:46, skipping insertion in model container [2021-11-25 20:24:46,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:39" (2/3) ... [2021-11-25 20:24:46,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a067af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:46, skipping insertion in model container [2021-11-25 20:24:46,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:46" (3/3) ... [2021-11-25 20:24:46,670 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2021-11-25 20:24:46,677 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:24:46,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:24:46,732 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:24:46,751 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:24:46,751 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:24:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 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) [2021-11-25 20:24:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:24:46,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:46,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:46,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:46,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:46,778 INFO L85 PathProgramCache]: Analyzing trace with hash 334453616, now seen corresponding path program 1 times [2021-11-25 20:24:46,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:24:46,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010105279] [2021-11-25 20:24:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:46,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:24:46,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:24:46,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:24:46,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 20:24:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:48,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 20:24:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:24:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:24:48,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:24:48,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:24:48,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010105279] [2021-11-25 20:24:48,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010105279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:48,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:48,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:24:48,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133052923] [2021-11-25 20:24:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:48,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 20:24:48,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:24:48,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 20:24:48,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:24:48,624 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-25 20:24:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:48,641 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-11-25 20:24:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 20:24:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2021-11-25 20:24:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:48,652 INFO L225 Difference]: With dead ends: 29 [2021-11-25 20:24:48,652 INFO L226 Difference]: Without dead ends: 12 [2021-11-25 20:24:48,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:24:48,661 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:48,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:24:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-25 20:24:48,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-25 20:24:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:24:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-25 20:24:48,693 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 11 [2021-11-25 20:24:48,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:48,693 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-25 20:24:48,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-25 20:24:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-25 20:24:48,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:24:48,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:48,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:48,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:24:48,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:24:48,905 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1014511986, now seen corresponding path program 1 times [2021-11-25 20:24:48,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:24:48,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832570791] [2021-11-25 20:24:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:48,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:24:48,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:24:48,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:24:48,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 20:24:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:50,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:24:50,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:24:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:24:51,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:24:51,270 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:24:51,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832570791] [2021-11-25 20:24:51,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832570791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:51,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:51,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:24:51,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872659566] [2021-11-25 20:24:51,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:51,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:51,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:24:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:51,275 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 2.2) 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) [2021-11-25 20:24:54,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:57,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:00,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:02,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:02,897 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-25 20:25:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:25:02,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) 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 [2021-11-25 20:25:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:02,900 INFO L225 Difference]: With dead ends: 19 [2021-11-25 20:25:02,900 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 20:25:02,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:25:02,921 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:02,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 4 Unknown, 0 Unchecked, 11.6s Time] [2021-11-25 20:25:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 20:25:02,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 20:25:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:25:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-25 20:25:02,927 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-11-25 20:25:02,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:02,928 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-25 20:25:02,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) 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) [2021-11-25 20:25:02,928 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-25 20:25:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:25:02,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:02,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:25:02,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:25:03,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:25:03,145 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:25:03,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:03,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1505447948, now seen corresponding path program 1 times [2021-11-25 20:25:03,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:25:03,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829334164] [2021-11-25 20:25:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:03,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:25:03,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:25:03,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:25:03,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 20:25:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:08,931 WARN L261 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 20:25:08,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:25:26,108 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|)) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0))))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 20:25:37,644 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 16 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:26:11,931 WARN L227 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 16 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:27:28,134 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 |ULTIMATE.start_SqrtR_~Input#1|))) (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (= (_ bv1 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|) .cse0) (and (not .cse0) (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= .cse3 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse4)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 20:27:49,696 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode .cse2 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= .cse2 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 20:27:55,345 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:00,522 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:06,123 WARN L227 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:11,690 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:14,146 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (and (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= (fp.div c_currentRoundingMode .cse0 .cse1) |c_ULTIMATE.start_SqrtR_#res#1|) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (not (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse1 .cse1))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3) (fp.mul c_currentRoundingMode .cse2 .cse3)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 20:28:24,668 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:30,300 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:35,524 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:41,132 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:49,110 WARN L227 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:54,335 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:28:59,955 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:05,594 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:11,281 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:16,955 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:22,586 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:28,194 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:33,852 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:41,915 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:47,527 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:53,161 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:29:58,826 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:04,496 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:10,115 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:15,773 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:21,419 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:27,050 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:32,726 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:38,358 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:43,994 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:49,665 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:55,363 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:30:57,785 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse6 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse1 (fp.add roundNearestTiesToEven .cse2 .cse2))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse0) .cse1) (fp.mul roundNearestTiesToEven .cse0 .cse1)))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse6 .cse2))) (let ((.cse4 (fp.leq .cse5 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (.cse3 (fp.geq .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse3 .cse4) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse4) (not .cse3)))))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse6)))))) is different from false [2021-11-25 20:31:00,042 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse6 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse1 (fp.add roundNearestTiesToEven .cse2 .cse2))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse0) .cse1) (fp.mul roundNearestTiesToEven .cse0 .cse1)))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse6 .cse2))) (let ((.cse4 (fp.leq .cse5 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (.cse3 (fp.geq .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse3 .cse4) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse4) (not .cse3)))))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse6)))))) is different from true [2021-11-25 20:31:10,478 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:31:16,128 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:31:21,366 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:31:26,999 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:31:35,010 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:31:40,233 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:31:45,860 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:31:51,509 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:31:57,122 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:32:02,761 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:32:08,453 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:32:14,117 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:32:19,740 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:32:22,138 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse4 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse1 (fp.add roundNearestTiesToEven .cse2 .cse2))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse0) .cse1) (fp.mul roundNearestTiesToEven .cse0 .cse1)))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (let ((.cse3 (fp.div roundNearestTiesToEven .cse4 .cse2))) (or (not (fp.leq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (not (fp.geq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0)))))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse4)))))) is different from false [2021-11-25 20:32:24,404 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse4 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse1 (fp.add roundNearestTiesToEven .cse2 .cse2))) (fp.gt (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse0) .cse1) (fp.mul roundNearestTiesToEven .cse0 .cse1)))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (let ((.cse3 (fp.div roundNearestTiesToEven .cse4 .cse2))) (or (not (fp.leq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (not (fp.geq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0)))))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse4)))))) is different from true [2021-11-25 20:32:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:24,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:24,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:24,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829334164] [2021-11-25 20:32:24,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829334164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:24,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:24,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:32:24,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677314807] [2021-11-25 20:32:24,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:24,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:32:24,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:24,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:32:24,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=22, Unknown=8, NotChecked=78, Total=132 [2021-11-25 20:32:24,407 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 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) [2021-11-25 20:32:28,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:32:30,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:32:33,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:32:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:33,610 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-25 20:32:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:32:33,951 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 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 [2021-11-25 20:32:33,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:33,952 INFO L225 Difference]: With dead ends: 20 [2021-11-25 20:32:33,952 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 20:32:33,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=8, NotChecked=102, Total=182 [2021-11-25 20:32:33,954 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:33,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 3 Unknown, 44 Unchecked, 7.9s Time] [2021-11-25 20:32:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 20:32:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-11-25 20:32:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:32:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-25 20:32:33,959 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2021-11-25 20:32:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:33,959 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-25 20:32:33,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 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) [2021-11-25 20:32:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-25 20:32:33,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:32:33,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:33,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:33,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:34,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:34,161 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:34,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1436755179, now seen corresponding path program 1 times [2021-11-25 20:32:34,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:34,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793900765] [2021-11-25 20:32:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:34,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:34,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:34,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:34,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 20:32:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:46,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 20:32:46,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:32,004 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse2 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xnp1~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (.cse3 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xnp1~0#1| |c_ULTIMATE.start_SqrtR_~xnp1~0#1|)))) (let ((.cse1 (fp.gt .cse2 .cse3)) (.cse0 (fp.lt .cse2 (fp.neg .cse3)))) (or (and (or .cse0 .cse1) (= (_ bv1 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) (and (not .cse1) (not .cse0) (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|))))) (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (= (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_SqrtR_~Input#1| .cse4) .cse4) (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) |ULTIMATE.start_SqrtR_~Input#1|) .cse4) .cse4))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse4)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 20:33:34,060 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse2 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xnp1~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (.cse3 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xnp1~0#1| |c_ULTIMATE.start_SqrtR_~xnp1~0#1|)))) (let ((.cse1 (fp.gt .cse2 .cse3)) (.cse0 (fp.lt .cse2 (fp.neg .cse3)))) (or (and (or .cse0 .cse1) (= (_ bv1 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) (and (not .cse1) (not .cse0) (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|))))) (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (= (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_SqrtR_~Input#1| .cse4) .cse4) (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) |ULTIMATE.start_SqrtR_~Input#1|) .cse4) .cse4))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse4)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-25 20:34:02,340 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xnp1~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xnp1~0#1| |c_ULTIMATE.start_SqrtR_~xnp1~0#1|)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))) (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_SqrtR_~Input#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (= (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 |ULTIMATE.start_SqrtR_~Input#1| .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) |ULTIMATE.start_SqrtR_~Input#1|) .cse2) .cse2))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse2)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-25 20:34:08,593 WARN L227 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:34:09,683 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-25 20:34:09,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:34:09,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793900765] [2021-11-25 20:34:09,685 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-25 20:34:09,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926963238] [2021-11-25 20:34:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:09,686 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:34:09,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:34:09,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-25 20:34:09,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:34:09,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-25 20:34:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:23,574 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 20:34:23,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:23,576 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-25 20:34:23,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147049441] [2021-11-25 20:34:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:23,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:23,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:23,578 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:34:23,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71776135-6c16-47e7-827c-ccfaa7ea2050/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process