./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:07:44,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:07:44,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 21:07:44,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:07:44,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:07:44,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:07:44,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:07:44,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:07:44,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:07:44,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:07:44,965 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:07:44,966 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:07:44,967 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:07:44,970 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:07:44,971 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:07:44,971 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:07:44,973 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:07:44,978 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:07:44,979 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:07:44,979 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:07:44,980 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:07:44,981 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:07:44,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:07:44,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:07:44,984 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:07:44,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:07:44,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:07:44,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:07:44,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:07:44,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:07:44,987 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:07:44,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:07:44,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:07:44,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:07:44,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:07:44,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:07:44,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:44,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:07:44,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:07:44,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:07:44,991 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:07:44,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:07:44,992 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:07:44,992 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:07:44,993 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:07:44,993 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2023-11-06 21:07:45,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:07:45,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:07:45,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:07:45,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:07:45,317 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:07:45,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2023-11-06 21:07:48,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:07:48,907 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:07:48,908 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/sv-benchmarks/c/float-benchs/sqrt_poly.c [2023-11-06 21:07:48,916 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/data/a39709bc2/ff137869ae024eedab66d836377b0b9a/FLAGd54ce6a85 [2023-11-06 21:07:48,933 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/data/a39709bc2/ff137869ae024eedab66d836377b0b9a [2023-11-06 21:07:48,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:07:48,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:07:48,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:48,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:07:48,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:07:48,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:48" (1/1) ... [2023-11-06 21:07:48,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c3777b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:48, skipping insertion in model container [2023-11-06 21:07:48,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:48" (1/1) ... [2023-11-06 21:07:48,971 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:49,119 WARN L240 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_b7b2ca64-4455-4309-8d52-57ddc0b29104/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2023-11-06 21:07:49,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:49,144 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:07:49,155 WARN L240 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_b7b2ca64-4455-4309-8d52-57ddc0b29104/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2023-11-06 21:07:49,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:49,171 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:07:49,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49 WrapperNode [2023-11-06 21:07:49,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:49,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:49,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:07:49,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:07:49,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,201 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2023-11-06 21:07:49,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:49,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:07:49,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:07:49,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:07:49,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:07:49,224 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:07:49,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:07:49,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:07:49,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (1/1) ... [2023-11-06 21:07:49,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:49,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:07:49,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:07:49,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:07:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:07:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:07:49,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:07:49,365 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:07:49,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:07:49,473 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:07:49,557 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:07:49,558 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:07:49,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:49 BoogieIcfgContainer [2023-11-06 21:07:49,561 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:07:49,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:07:49,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:07:49,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:07:49,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:07:48" (1/3) ... [2023-11-06 21:07:49,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266a6389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:49, skipping insertion in model container [2023-11-06 21:07:49,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:49" (2/3) ... [2023-11-06 21:07:49,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266a6389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:49, skipping insertion in model container [2023-11-06 21:07:49,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:49" (3/3) ... [2023-11-06 21:07:49,578 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2023-11-06 21:07:49,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:07:49,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:07:49,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:07:49,657 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d4e20c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:07:49,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:07:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-06 21:07:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:07:49,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:49,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:07:49,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:49,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash 67880, now seen corresponding path program 1 times [2023-11-06 21:07:49,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:49,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310099100] [2023-11-06 21:07:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:49,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:07:49,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:07:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:07:49,954 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 21:07:49,956 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:07:49,958 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:07:49,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:07:49,966 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 21:07:49,972 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:07:49,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:07:49 BoogieIcfgContainer [2023-11-06 21:07:49,996 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:07:49,998 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:07:49,999 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:07:49,999 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:07:50,000 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:49" (3/4) ... [2023-11-06 21:07:50,003 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:07:50,005 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:07:50,006 INFO L158 Benchmark]: Toolchain (without parser) took 1068.35ms. Allocated memory is still 172.0MB. Free memory was 124.4MB in the beginning and 139.9MB in the end (delta: -15.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:50,007 INFO L158 Benchmark]: CDTParser took 0.93ms. Allocated memory is still 142.6MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:50,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.04ms. Allocated memory is still 172.0MB. Free memory was 124.0MB in the beginning and 113.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:07:50,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.59ms. Allocated memory is still 172.0MB. Free memory was 113.7MB in the beginning and 112.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:07:50,010 INFO L158 Benchmark]: Boogie Preprocessor took 21.29ms. Allocated memory is still 172.0MB. Free memory was 112.4MB in the beginning and 111.4MB in the end (delta: 963.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:50,017 INFO L158 Benchmark]: RCFGBuilder took 336.45ms. Allocated memory is still 172.0MB. Free memory was 111.0MB in the beginning and 99.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:07:50,017 INFO L158 Benchmark]: TraceAbstraction took 432.08ms. Allocated memory is still 172.0MB. Free memory was 99.0MB in the beginning and 141.0MB in the end (delta: -41.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:50,019 INFO L158 Benchmark]: Witness Printer took 6.41ms. Allocated memory is still 172.0MB. Free memory was 141.0MB in the beginning and 139.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:50,026 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93ms. Allocated memory is still 142.6MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.04ms. Allocated memory is still 172.0MB. Free memory was 124.0MB in the beginning and 113.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.59ms. Allocated memory is still 172.0MB. Free memory was 113.7MB in the beginning and 112.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.29ms. Allocated memory is still 172.0MB. Free memory was 112.4MB in the beginning and 111.4MB in the end (delta: 963.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.45ms. Allocated memory is still 172.0MB. Free memory was 111.0MB in the beginning and 99.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 432.08ms. Allocated memory is still 172.0MB. Free memory was 99.0MB in the beginning and 141.0MB in the end (delta: -41.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.41ms. Allocated memory is still 172.0MB. Free memory was 141.0MB in the beginning and 139.9MB in the end (delta: 1.1MB). 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: 16]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27. Possible FailurePath: [L18] double sqrt2 = 1.414213538169860839843750; [L22] double S, I; [L24] I = __VERIFIER_nondet_double() [L25] CALL assume_abort_if_not(I >= 1. && I <= 3.) [L14] COND FALSE !(!cond) [L25] RET assume_abort_if_not(I >= 1. && I <= 3.) [L27] COND TRUE I >= 2. [L27] S = sqrt2 * (1.+(I/2.- 1.)*(.5-0.125*(I/2.-1.))) [L30] CALL __VERIFIER_assert(S >= 1. && S <= 2.) [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] [L16] reach_error() VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 21:07:50,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:07:52,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:07:52,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-06 21:07:52,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:07:52,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:07:53,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:07:53,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:07:53,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:07:53,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:07:53,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:07:53,024 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:07:53,025 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:07:53,025 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:07:53,027 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:07:53,028 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:07:53,028 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:07:53,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:07:53,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:07:53,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:07:53,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:07:53,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:07:53,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:07:53,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:07:53,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:07:53,033 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:07:53,034 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:07:53,034 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:07:53,035 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:07:53,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:07:53,035 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:07:53,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:07:53,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:07:53,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:07:53,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:53,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:07:53,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:07:53,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:07:53,039 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:07:53,039 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:07:53,040 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:07:53,041 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:07:53,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:07:53,041 INFO L153 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_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2023-11-06 21:07:53,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:07:53,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:07:53,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:07:53,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:07:53,514 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:07:53,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2023-11-06 21:07:56,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:07:57,107 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:07:57,108 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/sv-benchmarks/c/float-benchs/sqrt_poly.c [2023-11-06 21:07:57,116 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/data/2b6605470/6a6318f490c24c8aaecdcdbaca866af3/FLAG8eda8cf60 [2023-11-06 21:07:57,135 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/data/2b6605470/6a6318f490c24c8aaecdcdbaca866af3 [2023-11-06 21:07:57,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:07:57,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:07:57,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:57,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:07:57,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:07:57,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f14be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57, skipping insertion in model container [2023-11-06 21:07:57,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,182 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:57,351 WARN L240 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_b7b2ca64-4455-4309-8d52-57ddc0b29104/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2023-11-06 21:07:57,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:57,382 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:07:57,395 WARN L240 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_b7b2ca64-4455-4309-8d52-57ddc0b29104/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2023-11-06 21:07:57,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:57,417 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:07:57,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57 WrapperNode [2023-11-06 21:07:57,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:57,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:57,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:07:57,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:07:57,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,476 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2023-11-06 21:07:57,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:57,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:07:57,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:07:57,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:07:57,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:07:57,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:07:57,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:07:57,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:07:57,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (1/1) ... [2023-11-06 21:07:57,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:57,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:57,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:07:57,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:07:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:07:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:07:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:07:57,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:07:57,675 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:07:57,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:08:02,196 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:08:02,202 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:08:02,202 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:08:02,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:08:02 BoogieIcfgContainer [2023-11-06 21:08:02,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:08:02,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:08:02,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:08:02,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:08:02,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:07:57" (1/3) ... [2023-11-06 21:08:02,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5282e193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:08:02, skipping insertion in model container [2023-11-06 21:08:02,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:57" (2/3) ... [2023-11-06 21:08:02,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5282e193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:08:02, skipping insertion in model container [2023-11-06 21:08:02,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:08:02" (3/3) ... [2023-11-06 21:08:02,237 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2023-11-06 21:08:02,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:08:02,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:08:02,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:08:02,322 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d62c446, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:08:02,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:08:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:08:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:08:02,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:08:02,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:08:02,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:08:02,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:08:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2023-11-06 21:08:02,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:08:02,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681696716] [2023-11-06 21:08:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:08:02,367 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 [2023-11-06 21:08:02,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:08:02,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:08:02,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:08:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:08:03,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:08:03,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:08:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:08:03,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:08:03,273 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:08:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681696716] [2023-11-06 21:08:03,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681696716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:08:03,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:08:03,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:08:03,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65956624] [2023-11-06 21:08:03,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:08:03,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:08:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:08:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:08:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:08:03,313 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:08:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:08:03,328 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-06 21:08:03,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:08:03,331 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 21:08:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:08:03,338 INFO L225 Difference]: With dead ends: 23 [2023-11-06 21:08:03,339 INFO L226 Difference]: Without dead ends: 9 [2023-11-06 21:08:03,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:08:03,345 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:08:03,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:08:03,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-06 21:08:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-06 21:08:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2023-11-06 21:08:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-06 21:08:03,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2023-11-06 21:08:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:08:03,376 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-06 21:08:03,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:08:03,377 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-06 21:08:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:08:03,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:08:03,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:08:03,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:08:03,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:08:03,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:08:03,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:08:03,592 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2023-11-06 21:08:03,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:08:03,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643415422] [2023-11-06 21:08:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:08:03,593 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 [2023-11-06 21:08:03,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:08:03,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:08:03,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b2ca64-4455-4309-8d52-57ddc0b29104/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:08:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:08:06,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:08:06,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:08:23,423 WARN L839 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (and (fp.leq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) c_currentRoundingMode 3.0)) (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (= |c_ULTIMATE.start_main_~S~0#1| (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0)) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode |ULTIMATE.start_main_~I~0#1| .cse0) .cse1))) (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse2))))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false