./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.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_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:31:11,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:31:11,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:31:11,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:31:11,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:31:11,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:31:11,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:31:11,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:31:11,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:31:11,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:31:11,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:31:11,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:31:11,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:31:11,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:31:11,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:31:11,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:31:11,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:31:11,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:31:11,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:31:11,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:31:11,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:31:11,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:31:11,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:31:11,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:31:11,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:31:11,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:31:11,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:31:11,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:31:11,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:31:11,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:31:11,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:31:11,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:31:11,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:31:11,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:31:11,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:31:11,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:31:11,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:31:11,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:31:11,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:31:11,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:31:11,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:31:11,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:31:11,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:31:11,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:31:11,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:31:11,447 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:31:11,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:31:11,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:31:11,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:31:11,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:31:11,449 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:31:11,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:31:11,451 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:31:11,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:31:11,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:31:11,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:31:11,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:31:11,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:31:11,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:31:11,452 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:31:11,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:31:11,453 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:31:11,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:31:11,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:31:11,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:31:11,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:31:11,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:11,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:31:11,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:31:11,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:31:11,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:31:11,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:31:11,455 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:31:11,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:31:11,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:31:11,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 [2022-11-16 12:31:11,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:31:11,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:31:11,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:31:11,772 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:31:11,774 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:31:11,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2022-11-16 12:31:11,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data/9d7c53439/78049ce8886b48dd8e501407c4964120/FLAG57ba4953a [2022-11-16 12:31:12,502 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:31:12,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2022-11-16 12:31:12,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data/9d7c53439/78049ce8886b48dd8e501407c4964120/FLAG57ba4953a [2022-11-16 12:31:12,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data/9d7c53439/78049ce8886b48dd8e501407c4964120 [2022-11-16 12:31:12,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:31:12,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:31:12,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:12,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:31:12,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:31:12,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:12" (1/1) ... [2022-11-16 12:31:12,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773c519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:12, skipping insertion in model container [2022-11-16 12:31:12,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:12" (1/1) ... [2022-11-16 12:31:12,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:31:12,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:31:13,117 WARN L229 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_ae104086-0c8f-4067-b291-114fff129493/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2022-11-16 12:31:13,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:13,134 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:31:13,167 WARN L229 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_ae104086-0c8f-4067-b291-114fff129493/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2022-11-16 12:31:13,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:13,186 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:31:13,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13 WrapperNode [2022-11-16 12:31:13,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:13,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:13,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:31:13,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:31:13,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,231 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 92 [2022-11-16 12:31:13,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:13,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:31:13,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:31:13,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:31:13,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,267 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:31:13,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:31:13,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:31:13,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:31:13,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (1/1) ... [2022-11-16 12:31:13,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:13,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:31:13,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:31:13,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:31:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:31:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:31:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:31:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:31:13,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:31:13,470 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:31:13,744 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:31:13,765 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:31:13,766 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:31:13,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:13 BoogieIcfgContainer [2022-11-16 12:31:13,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:31:13,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:31:13,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:31:13,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:31:13,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:31:12" (1/3) ... [2022-11-16 12:31:13,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff3b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:13, skipping insertion in model container [2022-11-16 12:31:13,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:13" (2/3) ... [2022-11-16 12:31:13,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff3b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:13, skipping insertion in model container [2022-11-16 12:31:13,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:13" (3/3) ... [2022-11-16 12:31:13,779 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2022-11-16 12:31:13,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:31:13,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:31:13,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:31:13,929 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@154fda9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:31:13,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:31:13,934 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) [2022-11-16 12:31:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:31:13,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:13,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:13,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2001896247, now seen corresponding path program 1 times [2022-11-16 12:31:13,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:13,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331829802] [2022-11-16 12:31:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:13,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:14,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:14,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331829802] [2022-11-16 12:31:14,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331829802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:14,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:14,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467059025] [2022-11-16 12:31:14,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:14,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:14,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:14,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:14,365 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 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:14,483 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2022-11-16 12:31:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:31:14,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:31:14,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:14,497 INFO L225 Difference]: With dead ends: 51 [2022-11-16 12:31:14,498 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 12:31:14,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:14,511 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:14,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 114 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:14,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 12:31:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2022-11-16 12:31:14,562 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) [2022-11-16 12:31:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-11-16 12:31:14,565 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2022-11-16 12:31:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:14,565 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-11-16 12:31:14,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-11-16 12:31:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:31:14,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:14,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:14,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:31:14,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:14,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1984885586, now seen corresponding path program 1 times [2022-11-16 12:31:14,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:14,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787905154] [2022-11-16 12:31:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:31:14,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:31:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:31:14,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:31:14,621 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:31:14,623 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:31:14,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:31:14,631 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 12:31:14,635 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:31:14,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:31:14 BoogieIcfgContainer [2022-11-16 12:31:14,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:31:14,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:31:14,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:31:14,691 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:31:14,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:13" (3/4) ... [2022-11-16 12:31:14,695 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:31:14,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:31:14,696 INFO L158 Benchmark]: Toolchain (without parser) took 1841.86ms. Allocated memory is still 136.3MB. Free memory was 102.3MB in the beginning and 68.7MB in the end (delta: 33.6MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-11-16 12:31:14,696 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 88.1MB. Free memory was 59.0MB in the beginning and 59.0MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:31:14,697 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.41ms. Allocated memory is still 136.3MB. Free memory was 102.3MB in the beginning and 112.1MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:31:14,697 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.03ms. Allocated memory is still 136.3MB. Free memory was 112.1MB in the beginning and 110.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:31:14,698 INFO L158 Benchmark]: Boogie Preprocessor took 37.75ms. Allocated memory is still 136.3MB. Free memory was 110.7MB in the beginning and 109.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:31:14,698 INFO L158 Benchmark]: RCFGBuilder took 497.72ms. Allocated memory is still 136.3MB. Free memory was 109.4MB in the beginning and 98.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:31:14,702 INFO L158 Benchmark]: TraceAbstraction took 918.62ms. Allocated memory is still 136.3MB. Free memory was 98.1MB in the beginning and 69.0MB in the end (delta: 29.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-16 12:31:14,702 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 136.3MB. Free memory was 69.0MB in the beginning and 68.7MB in the end (delta: 324.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:31:14,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 88.1MB. Free memory was 59.0MB in the beginning and 59.0MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.41ms. Allocated memory is still 136.3MB. Free memory was 102.3MB in the beginning and 112.1MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.03ms. Allocated memory is still 136.3MB. Free memory was 112.1MB in the beginning and 110.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.75ms. Allocated memory is still 136.3MB. Free memory was 110.7MB in the beginning and 109.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.72ms. Allocated memory is still 136.3MB. Free memory was 109.4MB in the beginning and 98.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 918.62ms. Allocated memory is still 136.3MB. Free memory was 98.1MB in the beginning and 69.0MB in the end (delta: 29.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 136.3MB. Free memory was 69.0MB in the beginning and 68.7MB in the end (delta: 324.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 101]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 88, overapproximation of someBinaryArithmeticDOUBLEoperation at line 85, overapproximation of someUnaryDOUBLEoperation at line 42. Possible FailurePath: [L11] double _EPS = 0.0000010; [L14] double __return_125; [L1] int __return_main; VAL [__return_125=0, __return_main=0, _EPS=1/1000000] [L17] double main__d; [L18] double main__r; [L19] main__d = 1.0 VAL [__return_125=0, __return_main=0, _EPS=1/1000000, main__d=1] [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; VAL [__return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR__Input=1] [L35] COND FALSE !(SqrtR__Input <= 1.0) [L139] SqrtR__xn = 1.0 / SqrtR__Input VAL [__return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR__Input=1] [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, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] [L44] COND FALSE !(SqrtR__residu > SqrtR__lsup) VAL [__return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] [L126] COND FALSE !(SqrtR__residu < SqrtR__linf) [L132] SqrtR____CPAchecker_TMP_0 = 0 VAL [__return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] [L49] SqrtR__cond = SqrtR____CPAchecker_TMP_0 [L50] SqrtR__i = 0 VAL [__return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] [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=53, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, main__r=53, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] [L88] COND FALSE !(main__r >= 1.0) VAL [__return_125=53, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, main__r=53, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] [L114] main____CPAchecker_TMP_0 = 0 VAL [__return_125=53, __return_main=0, __tmp_1=1, _EPS=1/1000000, main____CPAchecker_TMP_0=0, main__d=1, main__r=53, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] [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=53, __return_main=0, __tmp_1=1, __tmp_2=0, __VERIFIER_assert__cond=0, _EPS=1/1000000, main____CPAchecker_TMP_0=0, main__d=1, main__r=53, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] [L99] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_125=53, __return_main=0, __tmp_1=1, __tmp_2=0, __VERIFIER_assert__cond=0, _EPS=1/1000000, main____CPAchecker_TMP_0=0, main__d=1, main__r=53, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] [L101] reach_error() VAL [__return_125=53, __return_main=0, __tmp_1=1, __tmp_2=0, __VERIFIER_assert__cond=0, _EPS=1/1000000, main____CPAchecker_TMP_0=0, main__d=1, main__r=53, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 56 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 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 [2022-11-16 12:31:14,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.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_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:31:17,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:31:17,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:31:17,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:31:17,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:31:17,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:31:17,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:31:17,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:31:17,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:31:17,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:31:17,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:31:17,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:31:17,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:31:17,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:31:17,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:31:17,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:31:17,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:31:17,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:31:17,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:31:17,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:31:17,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:31:17,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:31:17,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:31:17,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:31:17,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:31:17,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:31:17,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:31:17,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:31:17,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:31:17,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:31:17,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:31:17,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:31:17,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:31:17,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:31:17,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:31:17,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:31:17,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:31:17,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:31:17,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:31:17,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:31:17,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:31:17,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 12:31:17,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:31:17,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:31:17,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:31:17,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:31:17,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:31:17,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:31:17,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:31:17,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:31:17,406 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:31:17,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:31:17,407 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:31:17,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:31:17,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:31:17,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:31:17,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:31:17,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:31:17,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:31:17,408 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:31:17,408 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:31:17,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:31:17,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:31:17,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:31:17,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:31:17,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:31:17,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:31:17,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:31:17,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:17,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:31:17,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:31:17,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:31:17,411 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:31:17,411 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:31:17,411 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:31:17,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:31:17,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:31:17,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:31:17,412 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_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 [2022-11-16 12:31:17,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:31:17,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:31:17,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:31:17,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:31:17,895 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:31:17,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2022-11-16 12:31:17,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data/a1b5a8ee8/119539e151564865914f77180c2d25e4/FLAG208d7b6d2 [2022-11-16 12:31:18,684 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:31:18,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2022-11-16 12:31:18,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data/a1b5a8ee8/119539e151564865914f77180c2d25e4/FLAG208d7b6d2 [2022-11-16 12:31:19,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/data/a1b5a8ee8/119539e151564865914f77180c2d25e4 [2022-11-16 12:31:19,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:31:19,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:31:19,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:19,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:31:19,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:31:19,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b66849a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19, skipping insertion in model container [2022-11-16 12:31:19,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:31:19,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:31:19,273 WARN L229 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_ae104086-0c8f-4067-b291-114fff129493/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2022-11-16 12:31:19,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:19,316 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:31:19,393 WARN L229 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_ae104086-0c8f-4067-b291-114fff129493/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2022-11-16 12:31:19,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:19,431 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:31:19,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19 WrapperNode [2022-11-16 12:31:19,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:19,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:19,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:31:19,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:31:19,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,498 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 93 [2022-11-16 12:31:19,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:19,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:31:19,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:31:19,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:31:19,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:31:19,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:31:19,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:31:19,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:31:19,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:19,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:31:19,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:31:19,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:31:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:31:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:31:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:31:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:31:19,742 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:31:19,744 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:31:29,206 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:31:29,213 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:31:29,214 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:31:29,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:29 BoogieIcfgContainer [2022-11-16 12:31:29,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:31:29,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:31:29,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:31:29,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:31:29,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:31:19" (1/3) ... [2022-11-16 12:31:29,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfaf96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:29, skipping insertion in model container [2022-11-16 12:31:29,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (2/3) ... [2022-11-16 12:31:29,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfaf96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:29, skipping insertion in model container [2022-11-16 12:31:29,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:29" (3/3) ... [2022-11-16 12:31:29,228 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2022-11-16 12:31:29,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:31:29,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:31:29,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:31:29,329 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28d11219, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:31:29,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:31:29,334 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) [2022-11-16 12:31:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:31:29,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:29,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:29,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:29,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2001896247, now seen corresponding path program 1 times [2022-11-16 12:31:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:31:29,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335805919] [2022-11-16 12:31:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:29,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:31:29,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:31:29,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:31:29,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:31:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:31,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:31:31,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:31:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:32,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:31:32,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:31:32,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335805919] [2022-11-16 12:31:32,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335805919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:32,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:32,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:32,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105478720] [2022-11-16 12:31:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:32,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:31:32,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:31:32,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:31:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:31:32,276 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 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:34,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:38,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:40,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:43,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:45,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:48,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:50,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:50,928 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2022-11-16 12:31:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:31:50,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:31:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:50,939 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:31:50,939 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 12:31:50,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:50,947 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:50,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 65 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 7 Unknown, 0 Unchecked, 18.5s Time] [2022-11-16 12:31:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 12:31:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-11-16 12:31:50,983 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) [2022-11-16 12:31:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-11-16 12:31:50,985 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2022-11-16 12:31:50,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:50,986 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-11-16 12:31:50,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-11-16 12:31:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:31:50,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:50,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:51,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:31:51,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:31:51,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:51,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash 939018830, now seen corresponding path program 1 times [2022-11-16 12:31:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:31:51,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105652973] [2022-11-16 12:31:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:51,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:31:51,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:31:51,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:31:51,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:31:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:52,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:31:52,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:31:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:53,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:31:53,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:31:53,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105652973] [2022-11-16 12:31:53,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105652973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:53,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:53,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:53,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230650295] [2022-11-16 12:31:53,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:53,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:31:53,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:31:53,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:31:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:53,677 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:56,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:59,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:01,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:04,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:08,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:10,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:13,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:16,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:16,577 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2022-11-16 12:32:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:32:16,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:32:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:16,579 INFO L225 Difference]: With dead ends: 55 [2022-11-16 12:32:16,580 INFO L226 Difference]: Without dead ends: 36 [2022-11-16 12:32:16,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:32:16,582 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:16,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 56 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 22.9s Time] [2022-11-16 12:32:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-16 12:32:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2022-11-16 12:32:16,589 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) [2022-11-16 12:32:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-11-16 12:32:16,590 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2022-11-16 12:32:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:16,591 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-11-16 12:32:16,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-11-16 12:32:16,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:32:16,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:16,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:16,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:16,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1251138159, now seen corresponding path program 1 times [2022-11-16 12:32:16,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:16,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850937380] [2022-11-16 12:32:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:16,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:16,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:16,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:32:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:18,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:32:18,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:18,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:18,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:18,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:18,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850937380] [2022-11-16 12:32:18,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850937380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:18,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:18,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:32:18,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133448937] [2022-11-16 12:32:18,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:18,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:32:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:32:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:18,623 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:20,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:24,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:27,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:27,737 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2022-11-16 12:32:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:32:27,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:32:27,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:27,738 INFO L225 Difference]: With dead ends: 46 [2022-11-16 12:32:27,739 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 12:32:27,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:32:27,741 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:27,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 73 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2022-11-16 12:32:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 12:32:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-16 12:32:27,748 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) [2022-11-16 12:32:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-16 12:32:27,750 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2022-11-16 12:32:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:27,751 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-16 12:32:27,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-16 12:32:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:32:27,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:27,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:27,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:27,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:27,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1124243894, now seen corresponding path program 1 times [2022-11-16 12:32:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:27,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791323950] [2022-11-16 12:32:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:27,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:27,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:27,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:27,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:32:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:31,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:32:31,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:33,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:33,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:33,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791323950] [2022-11-16 12:32:33,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791323950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:33,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:33,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:32:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114532988] [2022-11-16 12:32:33,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:33,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:32:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:33,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:32:33,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:32:33,927 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-16 12:32:36,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:40,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:43,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:45,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:47,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:51,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:53,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:56,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:58,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:33:00,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:33:03,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:33:05,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:33:09,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:33:11,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:33:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:33:11,380 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2022-11-16 12:33:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:33:11,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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 [2022-11-16 12:33:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:33:11,383 INFO L225 Difference]: With dead ends: 64 [2022-11-16 12:33:11,383 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 12:33:11,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:33:11,384 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:33:11,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 68 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 36.9s Time] [2022-11-16 12:33:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 12:33:11,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2022-11-16 12:33:11,390 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) [2022-11-16 12:33:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-11-16 12:33:11,391 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2022-11-16 12:33:11,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:33:11,392 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-11-16 12:33:11,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-16 12:33:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-11-16 12:33:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:33:11,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:33:11,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:11,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:33:11,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:33:11,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:33:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1669842835, now seen corresponding path program 1 times [2022-11-16 12:33:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:33:11,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82412907] [2022-11-16 12:33:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:11,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:33:11,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:33:11,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:33:11,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:33:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:14,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:33:15,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:33:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:33:15,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:33:15,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:33:15,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82412907] [2022-11-16 12:33:15,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82412907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:15,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:15,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:33:15,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695507975] [2022-11-16 12:33:15,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:15,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:33:15,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:33:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:33:15,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:33:15,233 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-11-16 12:33:17,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:33:21,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:33:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:33:21,808 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2022-11-16 12:33:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:33:21,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 [2022-11-16 12:33:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:33:21,810 INFO L225 Difference]: With dead ends: 54 [2022-11-16 12:33:21,810 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 12:33:21,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:33:21,811 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 43 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:33:21,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 98 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-16 12:33:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 12:33:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2022-11-16 12:33:21,820 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) [2022-11-16 12:33:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-11-16 12:33:21,822 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 18 [2022-11-16 12:33:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:33:21,823 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-11-16 12:33:21,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-11-16 12:33:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-11-16 12:33:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:33:21,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:33:21,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:21,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:33:22,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:33:22,031 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:33:22,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:22,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1686853496, now seen corresponding path program 1 times [2022-11-16 12:33:22,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:33:22,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132089289] [2022-11-16 12:33:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:22,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:33:22,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:33:22,034 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:33:22,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:33:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:25,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:33:25,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:33:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:44,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:33:51,304 WARN L833 $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#1|) .cse0)) is different from false [2022-11-16 12:33:53,531 WARN L855 $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#1|) .cse0)) is different from true [2022-11-16 12:34:11,848 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:34:14,439 WARN L833 $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#1| (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#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) (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#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2022-11-16 12:34:17,011 WARN L855 $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#1| (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#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) (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#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2022-11-16 12:34:22,181 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:34:27,316 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:34:32,493 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:34:37,670 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:34:44,814 WARN L833 $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#1| .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#1|) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2022-11-16 12:34:47,209 WARN L855 $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#1| .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#1|) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2022-11-16 12:34:54,513 WARN L833 $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#1| .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#1|) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2022-11-16 12:34:56,903 WARN L855 $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#1| .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#1|) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2022-11-16 12:34:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 12:34:56,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:34:56,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132089289] [2022-11-16 12:34:56,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132089289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:34:56,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:34:56,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:34:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270407750] [2022-11-16 12:34:56,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:34:56,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:34:56,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:34:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:34:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=44, Unknown=14, NotChecked=68, Total=156 [2022-11-16 12:34:56,920 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2022-11-16 12:34:59,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:01,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:04,543 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (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#1| .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#1|) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0) (= |c_ULTIMATE.start_main_~main__d~0#1| .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-16 12:35:07,159 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ULTIMATE.start_main_~SqrtR__Input~0#1| .cse0) (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#1| .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#1|) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-16 12:35:09,576 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ULTIMATE.start_main_~SqrtR__Input~0#1| .cse0) (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#1| .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#1|) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-16 12:35:12,073 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__xn~0#1| (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#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) (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#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0) (= |c_ULTIMATE.start_main_~SqrtR__Input~0#1| .cse0) (= |c_ULTIMATE.start_main_~SqrtR__xn~0#1| .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-16 12:35:14,664 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__xn~0#1| (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#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) (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#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0) (= |c_ULTIMATE.start_main_~SqrtR__Input~0#1| .cse0) (= |c_ULTIMATE.start_main_~SqrtR__xn~0#1| .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-16 12:35:16,947 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq (fp.div c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~SqrtR__xnp1~0#1|) .cse0) (= (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse0) .cse0) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) .cse0) .cse0) .cse0))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0)) |c_ULTIMATE.start_main_~SqrtR__xnp1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-16 12:35:21,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:25,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:25,374 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2022-11-16 12:35:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:35:25,967 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 [2022-11-16 12:35:25,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:25,969 INFO L225 Difference]: With dead ends: 72 [2022-11-16 12:35:25,969 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:35:25,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 51.8s TimeCoverageRelationStatistics Valid=38, Invalid=46, Unknown=20, NotChecked=168, Total=272 [2022-11-16 12:35:25,970 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:25,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 82 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 4 Unknown, 159 Unchecked, 13.6s Time] [2022-11-16 12:35:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:35:25,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2022-11-16 12:35:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2022-11-16 12:35:25,978 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 18 [2022-11-16 12:35:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:25,978 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2022-11-16 12:35:25,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2022-11-16 12:35:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2022-11-16 12:35:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:35:25,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:25,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:26,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:26,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:26,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:35:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:26,187 INFO L85 PathProgramCache]: Analyzing trace with hash 885500251, now seen corresponding path program 1 times [2022-11-16 12:35:26,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:35:26,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712001850] [2022-11-16 12:35:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:26,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:26,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:35:26,189 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:35:26,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:35:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:29,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:35:29,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:32,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:32,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:35:32,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712001850] [2022-11-16 12:35:32,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712001850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:32,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:32,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:35:32,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249699181] [2022-11-16 12:35:32,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:32,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:35:32,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:35:32,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:35:32,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:35:32,758 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-16 12:35:36,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:39,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:43,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:45,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:47,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:49,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:51,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:53,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:55,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:57,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:59,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:03,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:05,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:07,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:09,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:11,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:14,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:16,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:18,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:21,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:23,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:25,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:27,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:28,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:28,191 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2022-11-16 12:36:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:36:28,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2022-11-16 12:36:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:28,193 INFO L225 Difference]: With dead ends: 64 [2022-11-16 12:36:28,193 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 12:36:28,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:36:28,195 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:28,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 96 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 22 Unknown, 0 Unchecked, 54.7s Time] [2022-11-16 12:36:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 12:36:28,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-11-16 12:36:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-11-16 12:36:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-16 12:36:28,203 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 19 [2022-11-16 12:36:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:28,203 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-16 12:36:28,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-16 12:36:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-16 12:36:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 12:36:28,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:28,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:28,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:28,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:36:28,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1075575453, now seen corresponding path program 1 times [2022-11-16 12:36:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:36:28,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906636347] [2022-11-16 12:36:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:28,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:36:28,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:36:28,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:36:28,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:36:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:33,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:36:33,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:34,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:34,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:36:34,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906636347] [2022-11-16 12:36:34,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906636347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:34,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:34,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:36:34,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153991698] [2022-11-16 12:36:34,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:34,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:34,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:36:34,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:34,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:34,126 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-11-16 12:36:37,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:39,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:42,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:36:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:43,017 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2022-11-16 12:36:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:36:43,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2022-11-16 12:36:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:43,019 INFO L225 Difference]: With dead ends: 63 [2022-11-16 12:36:43,019 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 12:36:43,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:36:43,020 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:43,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 73 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2022-11-16 12:36:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 12:36:43,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-16 12:36:43,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2022-11-16 12:36:43,044 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2022-11-16 12:36:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:43,044 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2022-11-16 12:36:43,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-11-16 12:36:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2022-11-16 12:36:43,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:36:43,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:43,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:43,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:43,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:36:43,247 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:43,248 INFO L85 PathProgramCache]: Analyzing trace with hash 13709678, now seen corresponding path program 1 times [2022-11-16 12:36:43,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:36:43,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056695123] [2022-11-16 12:36:43,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:43,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:36:43,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:36:43,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:36:43,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:36:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:48,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:36:48,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:36:59,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:06,192 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__xn~0#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))) (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 [2022-11-16 12:37:08,324 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__xn~0#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))) (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 [2022-11-16 12:37:15,369 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~SqrtR__Input~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) is different from false [2022-11-16 12:37:17,692 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~SqrtR__Input~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) is different from true [2022-11-16 12:37:24,691 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~main__d~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) is different from false [2022-11-16 12:37:27,022 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~main__d~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) is different from true [2022-11-16 12:37:34,090 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__d~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) is different from false [2022-11-16 12:37:36,407 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__d~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) is different from true [2022-11-16 12:39:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2022-11-16 12:39:01,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:01,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056695123] [2022-11-16 12:39:01,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056695123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:01,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:01,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:39:01,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884772950] [2022-11-16 12:39:01,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:01,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:39:01,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:39:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=58, Unknown=13, NotChecked=76, Total=182 [2022-11-16 12:39:01,345 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 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) [2022-11-16 12:39:02,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:05,773 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~main__d~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= |c_ULTIMATE.start_main_~main__d~0#1| .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-16 12:39:08,143 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~main__d~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (= |c_ULTIMATE.start_main_~main__d~0#1| (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-16 12:39:10,540 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (let ((.cse0 (let ((.cse1 (fp.div c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~SqrtR__Input~0#1|))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= |c_ULTIMATE.start_main_~SqrtR__Input~0#1| (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-16 12:39:13,818 WARN L855 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~SqrtR__xn~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))) (let ((.cse1 (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__xn~0#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse1) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse1))) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-11-16 12:39:15,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:20,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:22,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:25,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:26,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:26,041 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2022-11-16 12:39:26,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:39:26,065 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 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 29 [2022-11-16 12:39:26,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:26,066 INFO L225 Difference]: With dead ends: 80 [2022-11-16 12:39:26,066 INFO L226 Difference]: Without dead ends: 55 [2022-11-16 12:39:26,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 54.3s TimeCoverageRelationStatistics Valid=43, Invalid=62, Unknown=17, NotChecked=184, Total=306 [2022-11-16 12:39:26,067 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:26,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 46 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 3 Unknown, 126 Unchecked, 14.2s Time] [2022-11-16 12:39:26,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-16 12:39:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2022-11-16 12:39:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 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) [2022-11-16 12:39:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-11-16 12:39:26,076 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 29 [2022-11-16 12:39:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:26,076 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-11-16 12:39:26,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 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) [2022-11-16 12:39:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-16 12:39:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:39:26,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:26,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:26,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:26,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:26,297 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:26,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1340342541, now seen corresponding path program 1 times [2022-11-16 12:39:26,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:26,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478823583] [2022-11-16 12:39:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:26,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:26,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:26,300 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:39:26,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:39:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:31,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:39:31,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:33,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:42,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478823583] [2022-11-16 12:39:42,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478823583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:42,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:42,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-16 12:39:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651438723] [2022-11-16 12:39:42,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:39:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:39:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:39:42,979 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:46,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:49,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:52,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:55,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:58,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:01,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:03,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:06,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:10,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:12,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:14,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:14,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:14,197 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2022-11-16 12:40:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:40:14,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-16 12:40:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:14,450 INFO L225 Difference]: With dead ends: 71 [2022-11-16 12:40:14,450 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 12:40:14,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:40:14,451 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 32 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:14,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 113 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 30.7s Time] [2022-11-16 12:40:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 12:40:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-16 12:40:14,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 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) [2022-11-16 12:40:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-11-16 12:40:14,462 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 29 [2022-11-16 12:40:14,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:14,463 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-11-16 12:40:14,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-11-16 12:40:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:40:14,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:14,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:14,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:40:14,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:40:14,679 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:14,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:14,680 INFO L85 PathProgramCache]: Analyzing trace with hash -426284202, now seen corresponding path program 1 times [2022-11-16 12:40:14,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:40:14,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369253922] [2022-11-16 12:40:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:14,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:40:14,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:40:14,681 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:40:14,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:40:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:22,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:40:22,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:40:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:40:22,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:40:22,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:40:22,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369253922] [2022-11-16 12:40:22,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369253922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:22,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:22,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:40:22,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878958760] [2022-11-16 12:40:22,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:22,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:40:22,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:40:22,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:40:22,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:40:22,873 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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) [2022-11-16 12:40:26,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:28,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:31,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:35,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:37,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:37,416 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2022-11-16 12:40:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:40:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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) Word has length 33 [2022-11-16 12:40:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:37,847 INFO L225 Difference]: With dead ends: 72 [2022-11-16 12:40:37,847 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 12:40:37,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:40:37,848 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:37,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 76 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 14.4s Time] [2022-11-16 12:40:37,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 12:40:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-11-16 12:40:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 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) [2022-11-16 12:40:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-11-16 12:40:37,858 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 33 [2022-11-16 12:40:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:37,858 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-11-16 12:40:37,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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) [2022-11-16 12:40:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-11-16 12:40:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:40:37,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:37,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:37,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-16 12:40:38,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:40:38,063 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:38,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:38,064 INFO L85 PathProgramCache]: Analyzing trace with hash 119314739, now seen corresponding path program 1 times [2022-11-16 12:40:38,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:40:38,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322708471] [2022-11-16 12:40:38,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:38,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:40:38,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:40:38,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:40:38,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:40:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:45,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:40:45,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:29,655 WARN L233 SmtUtils]: Spent 19.48s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:42:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 6 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:42:09,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:19,099 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__xn~0#1| (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#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) (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#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))))) ((_ 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#1|)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))) is different from false [2022-11-16 12:42:21,560 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__xn~0#1| (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#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) (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#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))))) ((_ 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#1|)) (fp.mul c_currentRoundingMode c_~_EPS~0 (fp.add c_currentRoundingMode .cse0 .cse0)))) is different from true [2022-11-16 12:42:46,444 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:42:49,186 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~SqrtR__Input~0#1|))) (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#1| .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#1|) .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 [2022-11-16 12:42:51,901 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~SqrtR__Input~0#1|))) (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#1| .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#1|) .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 [2022-11-16 12:42:57,283 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:43:00,279 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |c_ULTIMATE.start_main_~main__d~0#1|))) (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#1| .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#1|) .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 [2022-11-16 12:43:02,696 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-16 12:43:02,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:43:02,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322708471] [2022-11-16 12:43:02,698 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 12:43:02,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-16 12:43:02,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:02,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:43:02,899 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_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:846) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:768) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 45 more [2022-11-16 12:43:02,902 INFO L158 Benchmark]: Toolchain (without parser) took 703889.31ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 53.9MB in the beginning and 56.0MB in the end (delta: -2.0MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2022-11-16 12:43:02,902 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 71.3MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:43:02,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.87ms. Allocated memory is still 71.3MB. Free memory was 53.6MB in the beginning and 54.7MB in the end (delta: -1.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:43:02,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.70ms. Allocated memory is still 71.3MB. Free memory was 54.7MB in the beginning and 52.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:43:02,903 INFO L158 Benchmark]: Boogie Preprocessor took 60.76ms. Allocated memory is still 71.3MB. Free memory was 52.9MB in the beginning and 51.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:43:02,904 INFO L158 Benchmark]: RCFGBuilder took 9654.58ms. Allocated memory is still 71.3MB. Free memory was 51.5MB in the beginning and 40.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:43:02,904 INFO L158 Benchmark]: TraceAbstraction took 693682.30ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 39.4MB in the beginning and 56.0MB in the end (delta: -16.6MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2022-11-16 12:43:02,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 71.3MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.87ms. Allocated memory is still 71.3MB. Free memory was 53.6MB in the beginning and 54.7MB in the end (delta: -1.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.70ms. Allocated memory is still 71.3MB. Free memory was 54.7MB in the beginning and 52.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.76ms. Allocated memory is still 71.3MB. Free memory was 52.9MB in the beginning and 51.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 9654.58ms. Allocated memory is still 71.3MB. Free memory was 51.5MB in the beginning and 40.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 693682.30ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 39.4MB in the beginning and 56.0MB in the end (delta: -16.6MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- 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_ae104086-0c8f-4067-b291-114fff129493/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")