./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:06:02,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:06:02,328 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:06:02,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:06:02,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:06:02,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:06:02,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:06:02,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:06:02,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:06:02,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:06:02,391 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:06:02,393 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:06:02,393 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:06:02,395 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:06:02,396 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:06:02,396 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:06:02,397 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:06:02,397 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:06:02,398 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:06:02,398 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:06:02,399 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:06:02,399 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:06:02,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:06:02,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:06:02,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:06:02,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:06:02,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:06:02,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:06:02,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:06:02,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:06:02,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:06:02,406 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:06:02,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:06:02,406 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:06:02,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:06:02,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:06:02,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:06:02,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:02,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:06:02,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:06:02,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:06:02,409 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:06:02,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:06:02,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:06:02,410 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:06:02,411 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:06:02,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:06:02,411 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_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 [2023-11-25 00:06:02,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:06:02,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:06:02,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:06:02,801 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:06:02,804 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:06:02,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2023-11-25 00:06:06,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:06:06,424 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:06:06,424 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2023-11-25 00:06:06,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/data/0b35dfea0/b1b720127d2c494ba5aa1c36cc160ef6/FLAGb445300e8 [2023-11-25 00:06:06,447 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/data/0b35dfea0/b1b720127d2c494ba5aa1c36cc160ef6 [2023-11-25 00:06:06,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:06:06,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:06:06,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:06,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:06:06,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:06:06,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714e3d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06, skipping insertion in model container [2023-11-25 00:06:06,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,483 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:06:06,678 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_03176f1f-b22c-4161-beea-4039b5ee02f6/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2023-11-25 00:06:06,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:06,713 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:06:06,726 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_03176f1f-b22c-4161-beea-4039b5ee02f6/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2023-11-25 00:06:06,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:06,751 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:06:06,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06 WrapperNode [2023-11-25 00:06:06,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:06,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:06,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:06:06,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:06:06,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,789 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-25 00:06:06,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:06,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:06:06,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:06:06,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:06:06,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,811 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:06:06,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:06:06,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:06:06,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:06:06,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (1/1) ... [2023-11-25 00:06:06,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:06,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:06,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:06:06,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:06:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:06:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:06:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:06:06,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:06:06,961 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:06:06,964 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:06:07,100 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:06:07,181 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:06:07,181 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:06:07,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:07 BoogieIcfgContainer [2023-11-25 00:06:07,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:06:07,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:06:07,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:06:07,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:06:07,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:06:06" (1/3) ... [2023-11-25 00:06:07,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be8cfc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:07, skipping insertion in model container [2023-11-25 00:06:07,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:06" (2/3) ... [2023-11-25 00:06:07,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be8cfc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:07, skipping insertion in model container [2023-11-25 00:06:07,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:07" (3/3) ... [2023-11-25 00:06:07,227 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2023-11-25 00:06:07,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:06:07,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:06:07,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:06:07,324 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=LoopHeads, 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;@62bda4e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:06:07,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:06:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-11-25 00:06:07,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-25 00:06:07,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:07,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-25 00:06:07,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:07,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash 88968804, now seen corresponding path program 1 times [2023-11-25 00:06:07,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:07,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278803142] [2023-11-25 00:06:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:07,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:06:07,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:06:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:06:07,608 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:06:07,611 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:06:07,613 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-25 00:06:07,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:06:07,622 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-25 00:06:07,627 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:06:07,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:06:07 BoogieIcfgContainer [2023-11-25 00:06:07,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:06:07,659 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:06:07,659 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:06:07,659 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:06:07,660 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:07" (3/4) ... [2023-11-25 00:06:07,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:06:07,663 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:06:07,665 INFO L158 Benchmark]: Toolchain (without parser) took 1213.32ms. Allocated memory was 151.0MB in the beginning and 213.9MB in the end (delta: 62.9MB). Free memory was 104.7MB in the beginning and 173.3MB in the end (delta: -68.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:06:07,665 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 151.0MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:06:07,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.88ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 93.7MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,668 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.00ms. Allocated memory is still 151.0MB. Free memory was 93.7MB in the beginning and 92.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:06:07,668 INFO L158 Benchmark]: Boogie Preprocessor took 26.71ms. Allocated memory is still 151.0MB. Free memory was 92.1MB in the beginning and 90.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,675 INFO L158 Benchmark]: RCFGBuilder took 365.49ms. Allocated memory is still 151.0MB. Free memory was 90.7MB in the beginning and 78.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-25 00:06:07,677 INFO L158 Benchmark]: TraceAbstraction took 470.28ms. Allocated memory was 151.0MB in the beginning and 213.9MB in the end (delta: 62.9MB). Free memory was 77.5MB in the beginning and 173.3MB in the end (delta: -95.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:06:07,678 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 213.9MB. Free memory was 173.3MB in the beginning and 173.3MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:06:07,687 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 151.0MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.88ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 93.7MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.00ms. Allocated memory is still 151.0MB. Free memory was 93.7MB in the beginning and 92.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.71ms. Allocated memory is still 151.0MB. Free memory was 92.1MB in the beginning and 90.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 365.49ms. Allocated memory is still 151.0MB. Free memory was 90.7MB in the beginning and 78.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 470.28ms. Allocated memory was 151.0MB in the beginning and 213.9MB in the end (delta: 62.9MB). Free memory was 77.5MB in the beginning and 173.3MB in the end (delta: -95.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 213.9MB. Free memory was 173.3MB in the beginning and 173.3MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 59. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L55] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L18] COND FALSE !(!cond) [L55] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L57] CALL, EXPR SqrtR(dd) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [Input=53, \old(Input)=53, _EPS=1/1000000, cond=0, i=0, xn=1, xn=1] [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L57] RET, EXPR SqrtR(dd) [L57] r = SqrtR(dd) [L59] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) [L20] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L20] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 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=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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 [2023-11-25 00:06:07,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:06:10,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:06:11,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-25 00:06:11,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:06:11,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:06:11,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:06:11,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:06:11,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:06:11,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:06:11,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:06:11,178 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:06:11,179 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:06:11,179 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:06:11,181 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:06:11,182 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:06:11,182 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:06:11,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:06:11,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:06:11,185 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:06:11,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:06:11,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:06:11,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:06:11,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:06:11,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:06:11,190 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:06:11,190 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:06:11,191 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:06:11,191 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:06:11,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:06:11,192 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:06:11,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:06:11,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:06:11,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:06:11,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:06:11,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:11,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:06:11,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:06:11,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:06:11,198 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:06:11,199 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:06:11,199 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:06:11,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:06:11,200 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:06:11,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:06:11,201 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_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 [2023-11-25 00:06:11,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:06:11,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:06:11,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:06:11,779 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:06:11,780 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:06:11,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2023-11-25 00:06:15,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:06:15,355 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:06:15,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2023-11-25 00:06:15,365 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/data/61c76a487/b4b6eaa6d1f04f6590d66cb26f7ece95/FLAGe3eccb072 [2023-11-25 00:06:15,383 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/data/61c76a487/b4b6eaa6d1f04f6590d66cb26f7ece95 [2023-11-25 00:06:15,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:06:15,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:06:15,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:15,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:06:15,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:06:15,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b88eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15, skipping insertion in model container [2023-11-25 00:06:15,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:06:15,640 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_03176f1f-b22c-4161-beea-4039b5ee02f6/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2023-11-25 00:06:15,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:15,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:06:15,732 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_03176f1f-b22c-4161-beea-4039b5ee02f6/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2023-11-25 00:06:15,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:15,785 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:06:15,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15 WrapperNode [2023-11-25 00:06:15,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:15,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:15,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:06:15,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:06:15,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,855 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-11-25 00:06:15,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:15,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:06:15,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:06:15,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:06:15,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:06:15,929 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:06:15,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:06:15,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:06:15,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (1/1) ... [2023-11-25 00:06:15,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:15,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:15,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:06:16,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:06:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:06:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:06:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:06:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:06:16,139 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:06:16,141 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:06:25,841 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:06:25,886 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:06:25,888 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:06:25,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:25 BoogieIcfgContainer [2023-11-25 00:06:25,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:06:25,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:06:25,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:06:25,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:06:25,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:06:15" (1/3) ... [2023-11-25 00:06:25,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4683f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:25, skipping insertion in model container [2023-11-25 00:06:25,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:15" (2/3) ... [2023-11-25 00:06:25,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4683f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:25, skipping insertion in model container [2023-11-25 00:06:25,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:25" (3/3) ... [2023-11-25 00:06:25,905 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2023-11-25 00:06:25,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:06:25,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:06:25,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:06:25,996 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=LoopHeads, 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;@5a5748e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:06:25,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:06:26,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:26,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:06:26,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:26,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:26,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:26,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1793132047, now seen corresponding path program 1 times [2023-11-25 00:06:26,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:26,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884914824] [2023-11-25 00:06:26,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:26,028 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 [2023-11-25 00:06:26,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:26,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:06:26,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:27,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:06:27,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:27,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:27,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:06:27,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884914824] [2023-11-25 00:06:27,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884914824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:27,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:27,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:06:27,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540690205] [2023-11-25 00:06:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:27,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:06:27,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:06:27,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:06:27,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:06:27,712 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-11-25 00:06:30,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:06:30,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:30,832 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2023-11-25 00:06:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:06:30,843 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2023-11-25 00:06:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:30,851 INFO L225 Difference]: With dead ends: 27 [2023-11-25 00:06:30,852 INFO L226 Difference]: Without dead ends: 12 [2023-11-25 00:06:30,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:06:30,858 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:30,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-11-25 00:06:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-25 00:06:30,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-25 00:06:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2023-11-25 00:06:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-25 00:06:30,892 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2023-11-25 00:06:30,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:30,892 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-25 00:06:30,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-11-25 00:06:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-25 00:06:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:06:30,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:30,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:30,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:31,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:31,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:31,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash 983666257, now seen corresponding path program 1 times [2023-11-25 00:06:31,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:31,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447611945] [2023-11-25 00:06:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:31,106 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 [2023-11-25 00:06:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:31,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:06:31,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:06:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:32,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:06:32,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:33,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:33,277 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:06:33,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447611945] [2023-11-25 00:06:33,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447611945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:33,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:33,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:06:33,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612346721] [2023-11-25 00:06:33,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:33,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:06:33,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:06:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:06:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:06:33,281 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-25 00:06:36,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:06:38,896 WARN L539 Checker$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 [] [2023-11-25 00:06:40,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:06:43,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:06:45,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:06:47,946 WARN L539 Checker$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 [] [2023-11-25 00:06:49,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:06:53,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:06:55,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:06:57,220 WARN L539 Checker$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 [] [2023-11-25 00:06:59,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:07:01,259 WARN L539 Checker$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 [] [2023-11-25 00:07:03,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:07:06,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:07:08,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:07:10,414 WARN L539 Checker$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 [] [2023-11-25 00:07:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:11,015 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2023-11-25 00:07:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:07:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2023-11-25 00:07:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:11,035 INFO L225 Difference]: With dead ends: 25 [2023-11-25 00:07:11,035 INFO L226 Difference]: Without dead ends: 14 [2023-11-25 00:07:11,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:07:11,037 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:11,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 16 Unknown, 0 Unchecked, 37.5s Time] [2023-11-25 00:07:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-25 00:07:11,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-25 00:07:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2023-11-25 00:07:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-11-25 00:07:11,044 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2023-11-25 00:07:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:11,044 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-11-25 00:07:11,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-25 00:07:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-11-25 00:07:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:07:11,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:11,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:11,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:07:11,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:07:11,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:07:11,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1040924559, now seen corresponding path program 1 times [2023-11-25 00:07:11,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:11,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945586348] [2023-11-25 00:07:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:11,256 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 [2023-11-25 00:07:11,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:11,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:07:11,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03176f1f-b22c-4161-beea-4039b5ee02f6/bin/utaipan-verify-SwPr7d2a91/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