./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:07:33,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:07:33,724 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-24 23:07:33,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:07:33,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:07:33,782 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:07:33,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:07:33,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:07:33,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:07:33,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:07:33,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:07:33,803 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:07:33,803 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:07:33,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:07:33,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:07:33,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:07:33,806 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:07:33,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:07:33,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:07:33,808 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:07:33,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:07:33,809 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:07:33,809 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:07:33,810 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:07:33,810 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:07:33,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:07:33,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:07:33,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:07:33,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:07:33,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:07:33,813 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:07:33,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:07:33,814 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:07:33,814 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 [2023-11-24 23:07:34,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:07:34,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:07:34,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:07:34,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:07:34,117 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:07:34,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-24 23:07:37,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:07:37,716 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:07:37,717 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-24 23:07:37,730 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/data/22e05e38d/aed75166359544f29a50b8d11599c984/FLAG5cb780060 [2023-11-24 23:07:37,750 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/data/22e05e38d/aed75166359544f29a50b8d11599c984 [2023-11-24 23:07:37,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:07:37,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:07:37,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:07:37,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:07:37,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:07:37,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:07:37" (1/1) ... [2023-11-24 23:07:37,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66869e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:37, skipping insertion in model container [2023-11-24 23:07:37,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:07:37" (1/1) ... [2023-11-24 23:07:37,812 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:07:38,053 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_328b0bf2-7751-4379-8007-44c383fe848b/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2023-11-24 23:07:38,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:07:38,080 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:07:38,107 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_328b0bf2-7751-4379-8007-44c383fe848b/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2023-11-24 23:07:38,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:07:38,126 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:07:38,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38 WrapperNode [2023-11-24 23:07:38,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:07:38,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:07:38,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:07:38,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:07:38,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,179 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 97 [2023-11-24 23:07:38,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:07:38,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:07:38,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:07:38,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:07:38,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:07:38,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:07:38,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:07:38,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:07:38,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:07:38,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:07:38,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:07:38,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:07:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:07:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:07:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:07:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:07:38,390 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:07:38,392 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:07:38,584 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:07:38,655 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:07:38,656 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:07:38,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:07:38 BoogieIcfgContainer [2023-11-24 23:07:38,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:07:38,659 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:07:38,659 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:07:38,676 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:07:38,677 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:07:38" (1/1) ... [2023-11-24 23:07:38,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:07:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 20 states and 28 transitions. [2023-11-24 23:07:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2023-11-24 23:07:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:07:38,751 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:07:39,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 22 states and 29 transitions. [2023-11-24 23:07:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-11-24 23:07:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:07:39,092 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:07:39,143 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:07:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:07:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:07:39,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:07:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:07:39,303 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-24 23:07:39,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:07:39 ImpRootNode [2023-11-24 23:07:39,352 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:07:39,353 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:07:39,355 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:07:39,355 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:07:39,356 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:07:38" (3/4) ... [2023-11-24 23:07:39,360 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:07:39,361 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:07:39,363 INFO L158 Benchmark]: Toolchain (without parser) took 1603.49ms. Allocated memory is still 111.1MB. Free memory was 68.9MB in the beginning and 62.0MB in the end (delta: 6.9MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2023-11-24 23:07:39,364 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:07:39,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.66ms. Allocated memory is still 111.1MB. Free memory was 68.7MB in the beginning and 57.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 23:07:39,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.82ms. Allocated memory is still 111.1MB. Free memory was 57.2MB in the beginning and 55.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:07:39,366 INFO L158 Benchmark]: Boogie Preprocessor took 28.11ms. Allocated memory is still 111.1MB. Free memory was 55.8MB in the beginning and 54.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:07:39,367 INFO L158 Benchmark]: RCFGBuilder took 448.38ms. Allocated memory is still 111.1MB. Free memory was 54.4MB in the beginning and 84.1MB in the end (delta: -29.7MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2023-11-24 23:07:39,368 INFO L158 Benchmark]: CodeCheck took 693.33ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 62.5MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:07:39,373 INFO L158 Benchmark]: Witness Printer took 8.92ms. Allocated memory is still 111.1MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:07:39,377 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 16 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 101]: 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 85, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 88. Possible FailurePath: [L1] int __return_main; [L11] double _EPS = 0.0000010; [L14] double __return_125; [L17] double main__d; [L18] double main__r; [L19] main__d = 1.0 VAL [_EPS=1/1000000, __return_125=0, __return_main=0, main__d=1] [L21] COND TRUE main__d <= 20.0 [L24] double __tmp_1; [L25] __tmp_1 = main__d [L26] double SqrtR__Input; [L27] SqrtR__Input = __tmp_1 [L28] double SqrtR__xn; [L29] double SqrtR__xnp1; [L30] double SqrtR__residu; [L31] double SqrtR__lsup; [L32] double SqrtR__linf; [L33] int SqrtR__i; [L34] int SqrtR__cond; [L35] COND FALSE !(SqrtR__Input <= 1.0) [L139] SqrtR__xn = 1.0 / SqrtR__Input [L39] SqrtR__xnp1 = SqrtR__xn [L40] SqrtR__residu = (2.0 * _EPS) * (SqrtR__xn + SqrtR__xnp1) [L41] SqrtR__lsup = _EPS * (SqrtR__xn + SqrtR__xnp1) [L42] SqrtR__linf = -SqrtR__lsup [L43] int SqrtR____CPAchecker_TMP_0; VAL [SqrtR__Input=1, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __return_125=0, __return_main=0, __tmp_1=1, main__d=1] [L44] COND FALSE !(SqrtR__residu > SqrtR__lsup) VAL [SqrtR__Input=1, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __return_125=0, __return_main=0, __tmp_1=1, main__d=1] [L126] COND FALSE !(SqrtR__residu < SqrtR__linf) [L132] SqrtR____CPAchecker_TMP_0 = 0 VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __return_125=0, __return_main=0, __tmp_1=1, main__d=1] [L49] SqrtR__cond = SqrtR____CPAchecker_TMP_0 [L50] SqrtR__i = 0 VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __return_125=0, __return_main=0, __tmp_1=1, main__d=1] [L52] COND FALSE !(!(SqrtR__cond == 0)) [L85] __return_125 = 1.0 / SqrtR__xnp1 [L86] main__r = __return_125 [L87] int main____CPAchecker_TMP_0; VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __return_125=2, __return_main=0, __tmp_1=1, main__d=1, main__r=2] [L88] COND FALSE !(main__r >= 1.0) VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __return_125=2, __return_main=0, __tmp_1=1, main__d=1, main__r=2] [L114] main____CPAchecker_TMP_0 = 0 VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __return_125=2, __return_main=0, __tmp_1=1, main____CPAchecker_TMP_0=0, main__d=1, main__r=2] [L95] int __tmp_2; [L96] __tmp_2 = main____CPAchecker_TMP_0 [L97] int __VERIFIER_assert__cond; [L98] __VERIFIER_assert__cond = __tmp_2 VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __VERIFIER_assert__cond=0, __return_125=2, __return_main=0, __tmp_1=1, __tmp_2=0, main____CPAchecker_TMP_0=0, main__d=1, main__r=2] [L99] COND TRUE __VERIFIER_assert__cond == 0 VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __VERIFIER_assert__cond=0, __return_125=2, __return_main=0, __tmp_1=1, __tmp_2=0, main____CPAchecker_TMP_0=0, main__d=1, main__r=2] [L101] reach_error() VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=1, SqrtR__xnp1=1, _EPS=1/1000000, __VERIFIER_assert__cond=0, __return_125=2, __return_main=0, __tmp_1=1, __tmp_2=0, main____CPAchecker_TMP_0=0, main__d=1, main__r=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.66ms. Allocated memory is still 111.1MB. Free memory was 68.7MB in the beginning and 57.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.82ms. Allocated memory is still 111.1MB. Free memory was 57.2MB in the beginning and 55.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.11ms. Allocated memory is still 111.1MB. Free memory was 55.8MB in the beginning and 54.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 448.38ms. Allocated memory is still 111.1MB. Free memory was 54.4MB in the beginning and 84.1MB in the end (delta: -29.7MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * CodeCheck took 693.33ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 62.5MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 8.92ms. Allocated memory is still 111.1MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:07:39,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:07:42,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:07:42,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2023-11-24 23:07:42,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:07:42,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:07:42,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:07:42,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:07:42,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:07:42,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:07:42,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:07:42,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:07:42,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:07:42,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:07:42,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:07:42,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:07:42,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:07:42,368 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:07:42,369 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:07:42,369 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:07:42,369 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:07:42,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:07:42,371 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:07:42,371 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:07:42,372 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:07:42,372 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:07:42,372 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:07:42,373 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-24 23:07:42,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:07:42,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:07:42,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:07:42,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:07:42,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:07:42,377 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:07:42,377 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:07:42,378 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:07:42,378 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-24 23:07:42,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:07:42,379 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_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 [2023-11-24 23:07:42,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:07:42,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:07:42,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:07:42,950 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:07:42,951 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:07:42,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-24 23:07:46,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:07:46,668 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:07:46,669 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-24 23:07:46,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/data/ca58c4d59/8182aada602c465f817a491d7ceb2f55/FLAG72ba3c1b4 [2023-11-24 23:07:46,706 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/data/ca58c4d59/8182aada602c465f817a491d7ceb2f55 [2023-11-24 23:07:46,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:07:46,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:07:46,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:07:46,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:07:46,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:07:46,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:07:46" (1/1) ... [2023-11-24 23:07:46,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fab9cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:46, skipping insertion in model container [2023-11-24 23:07:46,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:07:46" (1/1) ... [2023-11-24 23:07:46,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:07:47,054 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_328b0bf2-7751-4379-8007-44c383fe848b/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2023-11-24 23:07:47,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:07:47,103 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:07:47,153 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_328b0bf2-7751-4379-8007-44c383fe848b/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2023-11-24 23:07:47,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:07:47,183 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:07:47,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47 WrapperNode [2023-11-24 23:07:47,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:07:47,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:07:47,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:07:47,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:07:47,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,262 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 98 [2023-11-24 23:07:47,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:07:47,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:07:47,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:07:47,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:07:47,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:07:47,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:07:47,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:07:47,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:07:47,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:47" (1/1) ... [2023-11-24 23:07:47,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:07:47,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:07:47,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:07:47,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:07:47,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:07:47,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:07:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:07:47,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:07:47,489 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:07:47,491 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:08:15,239 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:08:15,274 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:08:15,274 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:08:15,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:08:15 BoogieIcfgContainer [2023-11-24 23:08:15,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:08:15,277 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:08:15,278 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:08:15,288 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:08:15,288 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:08:15" (1/1) ... [2023-11-24 23:08:15,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:08:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:08:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 20 states and 28 transitions. [2023-11-24 23:08:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2023-11-24 23:08:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:08:15,358 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:08:15,358 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:08:15,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:08:15,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:08:15,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-24 23:08:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:08:15,783 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:08:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:08:15,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:08:15,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:08:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:08:16,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:08:26,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:08:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:08:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 22 states and 29 transitions. [2023-11-24 23:08:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-11-24 23:08:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:08:27,846 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:08:27,846 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:08:27,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:08:27,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:08:27,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_328b0bf2-7751-4379-8007-44c383fe848b/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-24 23:08:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:08:31,062 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 23:08:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown