./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8 --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 7fa262dc7f518c122097610f4d533af11c9e92eb ........................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8 --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 7fa262dc7f518c122097610f4d533af11c9e92eb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:52:00,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:52:00,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:52:00,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:52:00,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:52:00,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:52:00,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:52:00,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:52:00,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:52:00,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:52:00,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:52:00,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:52:00,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:52:00,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:52:00,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:52:00,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:52:00,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:52:00,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:52:00,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:52:00,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:52:00,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:52:00,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:52:00,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:52:00,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:52:00,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:52:00,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:52:00,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:52:00,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:52:00,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:52:00,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:52:00,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:52:01,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:52:01,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:52:01,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:52:01,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:52:01,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:52:01,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:52:01,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:52:01,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:52:01,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:52:01,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:52:01,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:52:01,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:52:01,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:52:01,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:52:01,036 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:52:01,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:52:01,037 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:52:01,037 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:52:01,037 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:52:01,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:52:01,038 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:52:01,038 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:52:01,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:52:01,039 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:52:01,040 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:52:01,040 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:52:01,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:52:01,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:52:01,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:52:01,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:52:01,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:52:01,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:52:01,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:52:01,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:52:01,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:52:01,044 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:52:01,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:52:01,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:52:01,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:52:01,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:52:01,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:52:01,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:01,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:52:01,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:52:01,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:52:01,047 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:52:01,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:52:01,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:52:01,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:52:01,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:52:01,049 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_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fa262dc7f518c122097610f4d533af11c9e92eb [2021-10-13 07:52:01,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:52:01,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:52:01,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:52:01,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:52:01,306 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:52:01,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-13 07:52:01,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data/97bf0e0d9/2113910ae9e54dbabe2d1f15cce1e5bc/FLAG5fff8d741 [2021-10-13 07:52:01,914 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:52:01,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-13 07:52:01,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data/97bf0e0d9/2113910ae9e54dbabe2d1f15cce1e5bc/FLAG5fff8d741 [2021-10-13 07:52:02,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data/97bf0e0d9/2113910ae9e54dbabe2d1f15cce1e5bc [2021-10-13 07:52:02,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:52:02,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:52:02,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:02,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:52:02,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:52:02,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6126f746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02, skipping insertion in model container [2021-10-13 07:52:02,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:52:02,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:52:02,513 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2021-10-13 07:52:02,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:02,527 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:52:02,549 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2021-10-13 07:52:02,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:02,565 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:52:02,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02 WrapperNode [2021-10-13 07:52:02,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:02,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:02,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:52:02,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:52:02,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:02,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:52:02,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:52:02,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:52:02,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:52:02,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:52:02,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:52:02,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:52:02,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:02,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:02,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:52:02,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:52:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:52:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:52:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:52:02,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:52:02,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:52:03,000 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:52:03,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:03 BoogieIcfgContainer [2021-10-13 07:52:03,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:52:03,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:52:03,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:52:03,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:52:03,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:52:02" (1/3) ... [2021-10-13 07:52:03,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79244fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:03, skipping insertion in model container [2021-10-13 07:52:03,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (2/3) ... [2021-10-13 07:52:03,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79244fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:03, skipping insertion in model container [2021-10-13 07:52:03,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:03" (3/3) ... [2021-10-13 07:52:03,011 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-13 07:52:03,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:52:03,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:52:03,093 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:52:03,107 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:52:03,113 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:52:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:52:03,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:03,137 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:03,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:03,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1746364850, now seen corresponding path program 1 times [2021-10-13 07:52:03,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:52:03,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381841263] [2021-10-13 07:52:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:03,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:52:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:03,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:52:03,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381841263] [2021-10-13 07:52:03,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381841263] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:52:03,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:52:03,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:52:03,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339542153] [2021-10-13 07:52:03,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:52:03,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:52:03,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:52:03,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:52:03,353 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:52:03,407 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-10-13 07:52:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:52:03,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 07:52:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:52:03,417 INFO L225 Difference]: With dead ends: 43 [2021-10-13 07:52:03,417 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 07:52:03,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:52:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 07:52:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2021-10-13 07:52:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2021-10-13 07:52:03,463 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 11 [2021-10-13 07:52:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:52:03,466 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-10-13 07:52:03,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2021-10-13 07:52:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:52:03,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:03,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:03,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:52:03,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:03,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1729354189, now seen corresponding path program 1 times [2021-10-13 07:52:03,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:52:03,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506342185] [2021-10-13 07:52:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:03,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:52:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:52:03,507 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:52:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:52:03,567 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:52:03,567 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:52:03,570 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:52:03,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:52:03,577 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:52:03,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:52:03 BoogieIcfgContainer [2021-10-13 07:52:03,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:52:03,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:52:03,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:52:03,605 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:52:03,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:03" (3/4) ... [2021-10-13 07:52:03,608 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:52:03,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:52:03,611 INFO L168 Benchmark]: Toolchain (without parser) took 1346.46 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.3 MB in the beginning and 46.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,611 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:52:03,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.17 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.1 MB in the beginning and 86.8 MB in the end (delta: -28.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.62 ms. Allocated memory is still 113.2 MB. Free memory was 86.8 MB in the beginning and 85.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:52:03,613 INFO L168 Benchmark]: Boogie Preprocessor took 22.74 ms. Allocated memory is still 113.2 MB. Free memory was 85.3 MB in the beginning and 84.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,614 INFO L168 Benchmark]: RCFGBuilder took 377.48 ms. Allocated memory is still 113.2 MB. Free memory was 84.2 MB in the beginning and 72.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,615 INFO L168 Benchmark]: TraceAbstraction took 599.55 ms. Allocated memory is still 113.2 MB. Free memory was 72.2 MB in the beginning and 47.0 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,615 INFO L168 Benchmark]: Witness Printer took 4.16 ms. Allocated memory is still 113.2 MB. Free memory was 47.0 MB in the beginning and 46.5 MB in the end (delta: 555.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:52:03,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.17 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.1 MB in the beginning and 86.8 MB in the end (delta: -28.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.62 ms. Allocated memory is still 113.2 MB. Free memory was 86.8 MB in the beginning and 85.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.74 ms. Allocated memory is still 113.2 MB. Free memory was 85.3 MB in the beginning and 84.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 377.48 ms. Allocated memory is still 113.2 MB. Free memory was 84.2 MB in the beginning and 72.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 599.55 ms. Allocated memory is still 113.2 MB. Free memory was 72.2 MB in the beginning and 47.0 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.16 ms. Allocated memory is still 113.2 MB. Free memory was 47.0 MB in the beginning and 46.5 MB in the end (delta: 555.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 101]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 85, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 88. Possible FailurePath: [L1] int __return_main; [L11] double _EPS = 0.0000010; [L14] double __return_125; [L17] double main__d; [L18] double main__r; [L19] main__d = 1.0 VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L21] COND TRUE main__d <= 20.0 [L24] double __tmp_1; [L25] __tmp_1 = main__d [L26] double SqrtR__Input; [L27] SqrtR__Input = __tmp_1 [L28] double SqrtR__xn; [L29] double SqrtR__xnp1; [L30] double SqrtR__residu; [L31] double SqrtR__lsup; [L32] double SqrtR__linf; [L33] int SqrtR__i; [L34] int SqrtR__cond; [L35] COND FALSE !(SqrtR__Input <= 1.0) [L139] SqrtR__xn = 1.0 / SqrtR__Input [L39] SqrtR__xnp1 = SqrtR__xn [L40] SqrtR__residu = (2.0 * _EPS) * (SqrtR__xn + SqrtR__xnp1) [L41] SqrtR__lsup = _EPS * (SqrtR__xn + SqrtR__xnp1) [L42] SqrtR__linf = -SqrtR__lsup [L43] int SqrtR____CPAchecker_TMP_0; VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L44] COND FALSE !(SqrtR__residu > SqrtR__lsup) VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L126] COND FALSE !(SqrtR__residu < SqrtR__linf) [L132] SqrtR____CPAchecker_TMP_0 = 0 VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L49] SqrtR__cond = SqrtR____CPAchecker_TMP_0 [L50] SqrtR__i = 0 VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L52] COND FALSE !(!(SqrtR__cond == 0)) [L85] __return_125 = 1.0 / SqrtR__xnp1 [L86] main__r = __return_125 [L87] int main____CPAchecker_TMP_0; VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L88] COND FALSE !(main__r >= 1.0) VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L114] main____CPAchecker_TMP_0 = 0 VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L95] int __tmp_2; [L96] __tmp_2 = main____CPAchecker_TMP_0 [L97] int __VERIFIER_assert__cond; [L98] __VERIFIER_assert__cond = __tmp_2 VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L99] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_125=49, __return_main=0, _EPS=1/1000000] [L101] reach_error() VAL [__return_125=49, __return_main=0, _EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 484.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 13.3ms, AutomataDifference: 79.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 41 SDslu, 48 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.2ms SsaConstructionTime, 48.2ms SatisfiabilityAnalysisTime, 77.4ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:52:03,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:52:06,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:52:06,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:52:06,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:52:06,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:52:06,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:52:06,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:52:06,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:52:06,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:52:06,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:52:06,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:52:06,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:52:06,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:52:06,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:52:06,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:52:06,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:52:06,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:52:06,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:52:06,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:52:06,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:52:06,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:52:06,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:52:06,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:52:06,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:52:06,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:52:06,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:52:06,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:52:06,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:52:06,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:52:06,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:52:06,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:52:06,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:52:06,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:52:06,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:52:06,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:52:06,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:52:06,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:52:06,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:52:06,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:52:06,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:52:06,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:52:06,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:52:06,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:52:06,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:52:06,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:52:06,278 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:52:06,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:52:06,278 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:52:06,279 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:52:06,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:52:06,279 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:52:06,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:52:06,281 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:52:06,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:52:06,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:52:06,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:52:06,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:52:06,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:52:06,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:52:06,283 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:52:06,283 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:52:06,283 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:52:06,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:52:06,284 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:52:06,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:52:06,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:52:06,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:52:06,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:52:06,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:06,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:52:06,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:52:06,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:52:06,286 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:52:06,286 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:52:06,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:52:06,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:52:06,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:52:06,287 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_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fa262dc7f518c122097610f4d533af11c9e92eb [2021-10-13 07:52:06,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:52:06,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:52:06,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:52:06,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:52:06,755 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:52:06,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-13 07:52:06,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data/c9e6f04b5/5b4051035cbf4c9a9114721a8189d649/FLAG720882fae [2021-10-13 07:52:07,339 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:52:07,339 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-13 07:52:07,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data/c9e6f04b5/5b4051035cbf4c9a9114721a8189d649/FLAG720882fae [2021-10-13 07:52:07,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/data/c9e6f04b5/5b4051035cbf4c9a9114721a8189d649 [2021-10-13 07:52:07,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:52:07,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:52:07,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:07,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:52:07,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:52:07,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b41822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07, skipping insertion in model container [2021-10-13 07:52:07,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:52:07,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:52:07,907 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2021-10-13 07:52:07,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:07,947 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:52:07,990 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2021-10-13 07:52:07,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:08,016 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:52:08,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08 WrapperNode [2021-10-13 07:52:08,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:08,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:08,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:52:08,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:52:08,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:08,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:52:08,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:52:08,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:52:08,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:52:08,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:52:08,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:52:08,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:52:08,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (1/1) ... [2021-10-13 07:52:08,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:08,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:08,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:52:08,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:52:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:52:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:52:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:52:08,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:52:17,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:52:17,615 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:52:17,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:17 BoogieIcfgContainer [2021-10-13 07:52:17,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:52:17,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:52:17,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:52:17,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:52:17,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:52:07" (1/3) ... [2021-10-13 07:52:17,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4014e381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:17, skipping insertion in model container [2021-10-13 07:52:17,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:08" (2/3) ... [2021-10-13 07:52:17,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4014e381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:17, skipping insertion in model container [2021-10-13 07:52:17,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:17" (3/3) ... [2021-10-13 07:52:17,627 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2021-10-13 07:52:17,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:52:17,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:52:17,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:52:17,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:52:17,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:52:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:52:17,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:17,711 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:17,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:17,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:17,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2001896247, now seen corresponding path program 1 times [2021-10-13 07:52:17,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:52:17,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90728356] [2021-10-13 07:52:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:17,731 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:52:17,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:52:17,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:52:17,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:52:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:19,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:52:19,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:20,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:20,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:52:20,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90728356] [2021-10-13 07:52:20,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90728356] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:52:20,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:52:20,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:52:20,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291693920] [2021-10-13 07:52:20,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:52:20,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:52:20,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:52:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:52:20,862 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:52:40,987 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2021-10-13 07:52:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:52:40,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 07:52:40,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:52:40,998 INFO L225 Difference]: With dead ends: 50 [2021-10-13 07:52:40,998 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 07:52:41,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 414.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:52:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 07:52:41,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-10-13 07:52:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-10-13 07:52:41,033 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2021-10-13 07:52:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:52:41,033 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-10-13 07:52:41,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-10-13 07:52:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:52:41,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:41,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:41,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:52:41,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:52:41,236 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:41,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:41,237 INFO L82 PathProgramCache]: Analyzing trace with hash 939018830, now seen corresponding path program 1 times [2021-10-13 07:52:41,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:52:41,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415860925] [2021-10-13 07:52:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:41,239 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:52:41,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:52:41,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:52:41,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:52:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:42,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:52:42,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:43,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:50,137 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) is different from false [2021-10-13 07:52:52,214 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) is different from true [2021-10-13 07:53:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:04,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:04,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415860925] [2021-10-13 07:53:04,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415860925] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:04,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:04,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:53:04,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387115169] [2021-10-13 07:53:04,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:53:04,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:04,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:53:04,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2021-10-13 07:53:04,403 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:06,674 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~SqrtR__xn~0)) is different from true [2021-10-13 07:53:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:54,553 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2021-10-13 07:53:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:53:54,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 07:53:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:54,557 INFO L225 Difference]: With dead ends: 68 [2021-10-13 07:53:54,557 INFO L226 Difference]: Without dead ends: 49 [2021-10-13 07:53:54,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 13000.3ms TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2021-10-13 07:53:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-13 07:53:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 25. [2021-10-13 07:53:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-10-13 07:53:54,566 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-10-13 07:53:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:54,566 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-10-13 07:53:54,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-10-13 07:53:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:53:54,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:54,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:54,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:53:54,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:53:54,786 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:53:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:54,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1251138159, now seen corresponding path program 1 times [2021-10-13 07:53:54,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:54,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664678375] [2021-10-13 07:53:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:54,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:54,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:54,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:54,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:53:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:56,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:53:56,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:56,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:56,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:56,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664678375] [2021-10-13 07:53:56,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664678375] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:56,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:56,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:53:56,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567325449] [2021-10-13 07:53:56,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:53:56,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:56,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:53:56,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:53:56,926 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:05,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:05,258 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2021-10-13 07:54:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:54:05,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 07:54:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:05,259 INFO L225 Difference]: With dead ends: 46 [2021-10-13 07:54:05,259 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 07:54:05,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 456.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:54:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 07:54:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-13 07:54:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-13 07:54:05,267 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2021-10-13 07:54:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:05,267 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-13 07:54:05,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-13 07:54:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:54:05,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:05,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:05,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:05,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:05,484 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:54:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1124243894, now seen corresponding path program 1 times [2021-10-13 07:54:05,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:05,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775655572] [2021-10-13 07:54:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:05,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:05,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:05,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:05,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:54:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:08,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:54:08,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:11,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:18,578 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))) is different from false [2021-10-13 07:54:20,953 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))) is different from true [2021-10-13 07:54:46,748 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from false [2021-10-13 07:54:48,957 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from true [2021-10-13 07:54:55,569 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from false [2021-10-13 07:54:57,774 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))))) is different from true [2021-10-13 07:54:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:59,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:59,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775655572] [2021-10-13 07:54:59,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775655572] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:59,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:59,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 07:54:59,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806788071] [2021-10-13 07:54:59,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:54:59,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:59,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:54:59,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=48, Unknown=6, NotChecked=48, Total=132 [2021-10-13 07:54:59,633 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:01,964 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_main_~main__d~0 .cse0) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse1 .cse0)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse1 .cse1))))))) is different from true [2021-10-13 07:55:04,186 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 .cse1)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse1 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 07:55:06,604 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)))) (fp.gt (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0))))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse1 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse1 c_ULTIMATE.start_main_~SqrtR__xn~0))) is different from true [2021-10-13 07:56:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:56:13,832 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2021-10-13 07:56:13,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:56:13,844 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 07:56:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:56:13,846 INFO L225 Difference]: With dead ends: 78 [2021-10-13 07:56:13,846 INFO L226 Difference]: Without dead ends: 57 [2021-10-13 07:56:13,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 23307.6ms TimeCoverageRelationStatistics Valid=36, Invalid=51, Unknown=9, NotChecked=114, Total=210 [2021-10-13 07:56:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-13 07:56:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 31. [2021-10-13 07:56:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:13,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-10-13 07:56:13,855 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2021-10-13 07:56:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:56:13,855 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-10-13 07:56:13,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-10-13 07:56:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:56:13,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:56:13,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:56:13,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:56:14,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:56:14,062 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:56:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:56:14,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1669842835, now seen corresponding path program 1 times [2021-10-13 07:56:14,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:56:14,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940878693] [2021-10-13 07:56:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:14,063 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:56:14,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:56:14,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:56:14,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:56:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:17,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:56:17,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:56:17,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:56:18,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:56:18,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940878693] [2021-10-13 07:56:18,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940878693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:56:18,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:56:18,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:56:18,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429403927] [2021-10-13 07:56:18,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:56:18,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:56:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:56:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:56:18,008 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:56:24,352 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2021-10-13 07:56:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:56:24,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 07:56:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:56:24,354 INFO L225 Difference]: With dead ends: 64 [2021-10-13 07:56:24,354 INFO L226 Difference]: Without dead ends: 62 [2021-10-13 07:56:24,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 699.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:56:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-13 07:56:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 33. [2021-10-13 07:56:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:24,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-10-13 07:56:24,369 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 18 [2021-10-13 07:56:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:56:24,369 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-10-13 07:56:24,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-10-13 07:56:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:56:24,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:56:24,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:56:24,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:56:24,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:56:24,574 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:56:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:56:24,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1686853496, now seen corresponding path program 1 times [2021-10-13 07:56:24,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:56:24,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149711383] [2021-10-13 07:56:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:24,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:56:24,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:56:24,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:56:24,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:56:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:28,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:56:28,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:33,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:40,109 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xnp1~0) .cse0)) is different from false [2021-10-13 07:56:42,314 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xnp1~0) .cse0)) is different from true [2021-10-13 07:57:00,671 WARN L207 SmtUtils]: Spent 5.10 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:57:03,235 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2021-10-13 07:57:05,817 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2021-10-13 07:57:10,975 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:57:16,121 WARN L207 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:57:21,273 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:57:26,480 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:57:33,631 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2021-10-13 07:57:36,011 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2021-10-13 07:57:43,101 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2021-10-13 07:57:45,472 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2021-10-13 07:57:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 07:57:45,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:57:45,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149711383] [2021-10-13 07:57:45,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149711383] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:57:45,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1861515422] [2021-10-13 07:57:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:57:45,486 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:57:45,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:57:45,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:57:45,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 07:57:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:57:49,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:57:49,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:57:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:57:51,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:13,447 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:58:18,669 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:58:23,862 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:58:29,050 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:58:34,244 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 07:58:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 07:58:43,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1861515422] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:58:43,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441016423] [2021-10-13 07:58:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:43,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:58:43,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:43,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:58:43,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 08:00:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:57,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 08:00:57,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:01:25,089 WARN L207 SmtUtils]: Spent 9.08 s on a formula simplification that was a NOOP. DAG size: 16 [2021-10-13 08:01:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:01:26,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:01:49,438 WARN L207 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 08:01:54,640 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 08:01:59,864 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 08:02:05,976 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 4 [2021-10-13 08:02:11,178 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 08:02:13,805 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 c_ULTIMATE.start_main_~SqrtR__lsup~0))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from false [2021-10-13 08:02:16,406 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 c_ULTIMATE.start_main_~SqrtR__lsup~0))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from true [2021-10-13 08:02:22,568 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-13 08:02:27,647 WARN L207 SmtUtils]: Spent 5.08 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-13 08:02:30,227 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from false [2021-10-13 08:02:32,834 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from true [2021-10-13 08:02:42,892 WARN L207 SmtUtils]: Spent 5.31 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-13 08:02:45,242 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1))))))) is different from false [2021-10-13 08:02:47,596 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1))))))) is different from true [2021-10-13 08:02:52,963 WARN L207 SmtUtils]: Spent 5.36 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-13 08:03:00,071 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse0 .cse0)))))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse1))) is different from false [2021-10-13 08:03:02,458 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse0 .cse0)))))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse1))) is different from true [2021-10-13 08:03:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 08:03:02,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441016423] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:03:02,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:03:02,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 9, 9] total 22 [2021-10-13 08:03:02,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335530946] [2021-10-13 08:03:02,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 08:03:02,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:02,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 08:03:02,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=132, Unknown=19, NotChecked=248, Total=462 [2021-10-13 08:03:02,524 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:07,432 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~main__d~0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~main__d~0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) (and (= c_ULTIMATE.start_main_~main__d~0 .cse0) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1)))))) .cse2) (= c_currentRoundingMode roundNearestTiesToEven) .cse2))) is different from true [2021-10-13 08:03:09,812 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.geq (fp.div c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 .cse2) .cse2) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) .cse2) .cse2))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse2))) (and .cse0 (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or .cse0 (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1))))))) (= .cse2 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-10-13 08:03:12,409 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= .cse0 c_ULTIMATE.start_main_~SqrtR__Input~0) (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))))) .cse1) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0) .cse1))) is different from true [2021-10-13 08:03:14,977 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.geq (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse1))) (and (= c_ULTIMATE.start_main_~SqrtR__lsup~0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 c_ULTIMATE.start_main_~SqrtR__xn~0))) (or (forall ((ULTIMATE.start_main_~SqrtR__residu~0 (_ FloatingPoint 11 53))) (not (fp.gt ULTIMATE.start_main_~SqrtR__residu~0 c_ULTIMATE.start_main_~SqrtR__lsup~0))) .cse0) (= .cse1 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse1 c_ULTIMATE.start_main_~SqrtR__xn~0) .cse0))) is different from true [2021-10-13 08:03:17,593 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= .cse0 c_ULTIMATE.start_main_~SqrtR__Input~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse0 c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__xn~0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~SqrtR__Input~0 c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) c_ULTIMATE.start_main_~SqrtR__Input~0) c_ULTIMATE.start_main_~SqrtR__xn~0) c_ULTIMATE.start_main_~SqrtR__xn~0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0))) is different from true [2021-10-13 08:03:19,836 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq (fp.div c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~SqrtR__xnp1~0) .cse0) (= c_ULTIMATE.start_main_~SqrtR__xnp1~0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) .cse0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 08:03:54,892 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-13 08:03:54,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-13 08:03:54,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:55,293 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2021-10-13 08:03:55,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:55,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:55,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:55,519 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-13 08:03:55,523 INFO L168 Benchmark]: Toolchain (without parser) took 707826.60 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.8 MB in the beginning and 27.4 MB in the end (delta: 6.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:55,523 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 36.0 MB in the beginning and 35.9 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:03:55,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.74 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 38.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:55,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.95 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 36.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:03:55,525 INFO L168 Benchmark]: Boogie Preprocessor took 42.95 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 35.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:55,525 INFO L168 Benchmark]: RCFGBuilder took 9497.28 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.4 MB in the beginning and 50.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:55,526 INFO L168 Benchmark]: TraceAbstraction took 697902.28 ms. Allocated memory is still 69.2 MB. Free memory was 49.8 MB in the beginning and 27.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:55,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 36.0 MB in the beginning and 35.9 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.74 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 38.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.95 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 36.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.95 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 35.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9497.28 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.4 MB in the beginning and 50.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 697902.28 ms. Allocated memory is still 69.2 MB. Free memory was 49.8 MB in the beginning and 27.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51157d6-2dc5-4d42-ba15-f73095ac7204/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...