./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 e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:05:45,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:05:46,005 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:05:46,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:05:46,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:05:46,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:05:46,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:05:46,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:05:46,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:05:46,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:05:46,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:05:46,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:05:46,042 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:05:46,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:05:46,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:05:46,044 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:05:46,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:05:46,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:05:46,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:05:46,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:05:46,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:05:46,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:05:46,052 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:05:46,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:05:46,053 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:05:46,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:05:46,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:05:46,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:05:46,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:05:46,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:05:46,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:05:46,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:05:46,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:05:46,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:05:46,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:05:46,058 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:05:46,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:05:46,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:05:46,059 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:05:46,059 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 [2023-11-06 23:05:46,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:05:46,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:05:46,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:05:46,438 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:05:46,439 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:05:46,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-06 23:05:49,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:05:49,854 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:05:49,854 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-06 23:05:49,862 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/data/bfea8677f/8dcc6553431a48e58354a63527ba3fe9/FLAGcd6a933cb [2023-11-06 23:05:49,876 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/data/bfea8677f/8dcc6553431a48e58354a63527ba3fe9 [2023-11-06 23:05:49,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:05:49,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:05:49,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:49,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:05:49,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:05:49,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:49" (1/1) ... [2023-11-06 23:05:49,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ed969f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:49, skipping insertion in model container [2023-11-06 23:05:49,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:49" (1/1) ... [2023-11-06 23:05:49,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:05:50,145 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_de1f985f-a580-41c5-a5ce-5edf813b3310/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2023-11-06 23:05:50,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:50,171 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:05:50,201 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_de1f985f-a580-41c5-a5ce-5edf813b3310/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2023-11-06 23:05:50,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:50,227 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:05:50,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50 WrapperNode [2023-11-06 23:05:50,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:50,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:50,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:05:50,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:05:50,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,268 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 97 [2023-11-06 23:05:50,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:50,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:05:50,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:05:50,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:05:50,276 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:05:50,309 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:05:50,309 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:05:50,309 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:05:50,310 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (1/1) ... [2023-11-06 23:05:50,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:05:50,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:50,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:05:50,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:05:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:05:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:05:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:05:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:05:50,499 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:05:50,501 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:05:50,703 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:05:50,709 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:05:50,710 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:05:50,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:50 BoogieIcfgContainer [2023-11-06 23:05:50,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:05:50,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:05:50,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:05:50,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:05:50,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:05:49" (1/3) ... [2023-11-06 23:05:50,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d52ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:50, skipping insertion in model container [2023-11-06 23:05:50,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:50" (2/3) ... [2023-11-06 23:05:50,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d52ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:50, skipping insertion in model container [2023-11-06 23:05:50,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:50" (3/3) ... [2023-11-06 23:05:50,726 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-06 23:05:50,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:05:50,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:05:50,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:05:50,818 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@775d4dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:05:50,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:05:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 23:05:50,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:50,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:50,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:50,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:50,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2001896247, now seen corresponding path program 1 times [2023-11-06 23:05:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192154807] [2023-11-06 23:05:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:51,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:51,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192154807] [2023-11-06 23:05:51,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192154807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:51,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:51,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092371720] [2023-11-06 23:05:51,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:51,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:05:51,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:51,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:05:51,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:05:51,157 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:51,235 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2023-11-06 23:05:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:51,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 23:05:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:51,247 INFO L225 Difference]: With dead ends: 49 [2023-11-06 23:05:51,247 INFO L226 Difference]: Without dead ends: 40 [2023-11-06 23:05:51,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:51,254 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 45 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:51,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 111 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:05:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-06 23:05:51,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2023-11-06 23:05:51,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-11-06 23:05:51,310 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2023-11-06 23:05:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:51,311 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-11-06 23:05:51,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-11-06 23:05:51,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 23:05:51,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:51,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:51,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:05:51,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:51,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:51,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1984885586, now seen corresponding path program 1 times [2023-11-06 23:05:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:51,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597812036] [2023-11-06 23:05:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:51,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:05:51,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:05:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:05:51,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:05:51,422 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:05:51,424 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 23:05:51,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:05:51,441 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:05:51,448 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:05:51,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:05:51 BoogieIcfgContainer [2023-11-06 23:05:51,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:05:51,506 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:05:51,506 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:05:51,506 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:05:51,507 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:50" (3/4) ... [2023-11-06 23:05:51,509 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 23:05:51,511 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:05:51,512 INFO L158 Benchmark]: Toolchain (without parser) took 1630.73ms. Allocated memory is still 180.4MB. Free memory was 143.8MB in the beginning and 99.0MB in the end (delta: 44.8MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2023-11-06 23:05:51,513 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:05:51,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.27ms. Allocated memory is still 180.4MB. Free memory was 143.8MB in the beginning and 142.9MB in the end (delta: 953.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 23:05:51,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.88ms. Allocated memory is still 180.4MB. Free memory was 142.9MB in the beginning and 141.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:05:51,522 INFO L158 Benchmark]: Boogie Preprocessor took 31.48ms. Allocated memory is still 180.4MB. Free memory was 141.4MB in the beginning and 140.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:05:51,523 INFO L158 Benchmark]: RCFGBuilder took 402.99ms. Allocated memory is still 180.4MB. Free memory was 139.8MB in the beginning and 129.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:05:51,525 INFO L158 Benchmark]: TraceAbstraction took 790.66ms. Allocated memory is still 180.4MB. Free memory was 128.8MB in the beginning and 99.0MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-06 23:05:51,525 INFO L158 Benchmark]: Witness Printer took 5.07ms. Allocated memory is still 180.4MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:05:51,533 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.27ms. Allocated memory is still 180.4MB. Free memory was 143.8MB in the beginning and 142.9MB in the end (delta: 953.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.88ms. Allocated memory is still 180.4MB. Free memory was 142.9MB in the beginning and 141.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.48ms. Allocated memory is still 180.4MB. Free memory was 141.4MB in the beginning and 140.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 402.99ms. Allocated memory is still 180.4MB. Free memory was 139.8MB in the beginning and 129.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 790.66ms. Allocated memory is still 180.4MB. Free memory was 128.8MB in the beginning and 99.0MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 5.07ms. Allocated memory is still 180.4MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 101]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 88, overapproximation of someBinaryArithmeticDOUBLEoperation at line 85, overapproximation of someUnaryDOUBLEoperation at line 42. Possible FailurePath: [L1] int __return_main; [L11] double _EPS = 0.0000010; [L14] double __return_125; VAL [_EPS=1/1000000, __return_125=0, __return_main=0] [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; VAL [SqrtR__Input=1, _EPS=1/1000000, __return_125=0, __return_main=0, __tmp_1=1, main__d=1] [L35] COND FALSE !(SqrtR__Input <= 1.0) [L139] SqrtR__xn = 1.0 / SqrtR__Input VAL [SqrtR__Input=1, _EPS=1/1000000, __return_125=0, __return_main=0, __tmp_1=1, main__d=1] [L39] SqrtR__xnp1 = SqrtR__xn [L40] SqrtR__residu = (2.0 * _EPS) * (SqrtR__xn + SqrtR__xnp1) [L41] SqrtR__lsup = _EPS * (SqrtR__xn + SqrtR__xnp1) [L42] SqrtR__linf = -SqrtR__lsup [L43] int SqrtR____CPAchecker_TMP_0; VAL [SqrtR__Input=1, SqrtR__xn=54, SqrtR__xnp1=54, _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=54, SqrtR__xnp1=54, _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=54, SqrtR__xnp1=54, _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=54, SqrtR__xnp1=54, _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=54, SqrtR__xnp1=54, _EPS=1/1000000, __return_125=53, __return_main=0, __tmp_1=1, main__d=1, main__r=53] [L88] COND FALSE !(main__r >= 1.0) VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=54, SqrtR__xnp1=54, _EPS=1/1000000, __return_125=53, __return_main=0, __tmp_1=1, main__d=1, main__r=53] [L114] main____CPAchecker_TMP_0 = 0 VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=54, SqrtR__xnp1=54, _EPS=1/1000000, __return_125=53, __return_main=0, __tmp_1=1, main____CPAchecker_TMP_0=0, main__d=1, main__r=53] [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=54, SqrtR__xnp1=54, _EPS=1/1000000, __VERIFIER_assert__cond=0, __return_125=53, __return_main=0, __tmp_1=1, __tmp_2=0, main____CPAchecker_TMP_0=0, main__d=1, main__r=53] [L99] COND TRUE __VERIFIER_assert__cond == 0 VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=54, SqrtR__xnp1=54, _EPS=1/1000000, __VERIFIER_assert__cond=0, __return_125=53, __return_main=0, __tmp_1=1, __tmp_2=0, main____CPAchecker_TMP_0=0, main__d=1, main__r=53] [L101] reach_error() VAL [SqrtR__Input=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__xn=54, SqrtR__xnp1=54, _EPS=1/1000000, __VERIFIER_assert__cond=0, __return_125=53, __return_main=0, __tmp_1=1, __tmp_2=0, main____CPAchecker_TMP_0=0, main__d=1, main__r=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 55 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 23:05:51,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:05:54,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:05:54,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 23:05:54,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:05:54,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:05:54,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:05:54,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:05:54,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:05:54,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:05:54,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:05:54,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:05:54,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:05:54,567 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:05:54,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:05:54,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:05:54,570 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:05:54,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:05:54,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:05:54,571 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:05:54,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:05:54,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:05:54,573 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:05:54,574 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 23:05:54,574 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 23:05:54,574 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:05:54,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:05:54,575 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:05:54,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:05:54,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:05:54,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:05:54,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:05:54,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:05:54,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:05:54,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:05:54,579 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 23:05:54,579 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 23:05:54,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:05:54,580 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:05:54,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:05:54,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:05:54,581 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 23:05:54,582 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:05:54,582 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54d39a6a3598707eb000bd324eee861653a2a39c1655837786308f3da9918a18 [2023-11-06 23:05:55,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:05:55,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:05:55,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:05:55,056 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:05:55,057 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:05:55,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-06 23:05:58,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:05:58,572 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:05:58,573 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-06 23:05:58,581 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/data/338a57b08/89950288f1d740a48a3ad00316fcdc17/FLAG43ae46ffb [2023-11-06 23:05:58,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/data/338a57b08/89950288f1d740a48a3ad00316fcdc17 [2023-11-06 23:05:58,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:05:58,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:05:58,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:58,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:05:58,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:05:58,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:58,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb4d742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58, skipping insertion in model container [2023-11-06 23:05:58,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:58,642 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:05:58,836 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_de1f985f-a580-41c5-a5ce-5edf813b3310/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2023-11-06 23:05:58,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:58,861 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:05:58,884 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_de1f985f-a580-41c5-a5ce-5edf813b3310/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2023-11-06 23:05:58,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:58,926 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:05:58,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58 WrapperNode [2023-11-06 23:05:58,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:58,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:58,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:05:58,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:05:58,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:58,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:58,976 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 98 [2023-11-06 23:05:58,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:58,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:05:58,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:05:58,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:05:58,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:58,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:59,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:59,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:59,027 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:59,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:59,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:59,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:59,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:05:59,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:05:59,042 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:05:59,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:05:59,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (1/1) ... [2023-11-06 23:05:59,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:05:59,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:59,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:05:59,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:05:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:05:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 23:05:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:05:59,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:05:59,240 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:05:59,242 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:06:08,695 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:06:08,703 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:06:08,703 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:06:08,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:08 BoogieIcfgContainer [2023-11-06 23:06:08,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:06:08,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:06:08,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:06:08,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:06:08,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:05:58" (1/3) ... [2023-11-06 23:06:08,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2cfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:08, skipping insertion in model container [2023-11-06 23:06:08,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:58" (2/3) ... [2023-11-06 23:06:08,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2cfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:08, skipping insertion in model container [2023-11-06 23:06:08,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:08" (3/3) ... [2023-11-06 23:06:08,722 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2023-11-06 23:06:08,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:06:08,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:06:08,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:06:08,820 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b564bee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:06:08,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:06:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:08,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 23:06:08,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:08,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:08,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:08,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:08,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2001896247, now seen corresponding path program 1 times [2023-11-06 23:06:08,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:08,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692971140] [2023-11-06 23:06:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:08,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:06:08,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:08,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:06:08,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 23:06:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:11,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:06:11,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:11,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:11,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:11,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692971140] [2023-11-06 23:06:11,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692971140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:11,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:11,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:06:11,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080693554] [2023-11-06 23:06:11,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:11,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:06:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:06:11,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:11,781 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:14,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:17,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:20,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:24,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:26,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:28,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:30,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:33,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:35,666 WARN L539 Checker$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 [] [2023-11-06 23:06:39,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:41,026 WARN L539 Checker$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 [] [2023-11-06 23:06:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:41,711 INFO L93 Difference]: Finished difference Result 67 states and 96 transitions. [2023-11-06 23:06:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:06:41,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 23:06:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:41,726 INFO L225 Difference]: With dead ends: 67 [2023-11-06 23:06:41,726 INFO L226 Difference]: Without dead ends: 41 [2023-11-06 23:06:41,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:06:41,733 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 51 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:41,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 29.8s Time] [2023-11-06 23:06:41,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-06 23:06:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 23. [2023-11-06 23:06:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-11-06 23:06:41,770 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2023-11-06 23:06:41,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:41,770 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-11-06 23:06:41,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-11-06 23:06:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 23:06:41,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:41,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:41,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/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)] Ended with exit code 0 [2023-11-06 23:06:41,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:06:41,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:41,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash 939018830, now seen corresponding path program 1 times [2023-11-06 23:06:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:41,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101553332] [2023-11-06 23:06:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:41,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:06:41,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:41,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:06:42,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 23:06:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:43,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:06:43,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:44,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:44,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101553332] [2023-11-06 23:06:44,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101553332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:44,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:44,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:06:44,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424022515] [2023-11-06 23:06:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:44,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:06:44,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:44,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:06:44,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:06:44,308 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:46,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:49,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:53,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:55,236 WARN L539 Checker$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 [] [2023-11-06 23:06:57,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:00,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:02,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:04,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:07,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:09,913 WARN L539 Checker$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 [] [2023-11-06 23:07:11,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:15,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:17,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:18,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:21,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:23,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:25,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:25,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:25,885 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2023-11-06 23:07:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:25,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 23:07:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:25,888 INFO L225 Difference]: With dead ends: 55 [2023-11-06 23:07:25,888 INFO L226 Difference]: Without dead ends: 36 [2023-11-06 23:07:25,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:25,890 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:25,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 41 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 15 Unknown, 0 Unchecked, 41.2s Time] [2023-11-06 23:07:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-06 23:07:25,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2023-11-06 23:07:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-11-06 23:07:25,902 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2023-11-06 23:07:25,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:25,902 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-11-06 23:07:25,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:25,903 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-11-06 23:07:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 23:07:25,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:25,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:25,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 23:07:26,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:26,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:26,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:26,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1251138159, now seen corresponding path program 1 times [2023-11-06 23:07:26,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:26,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929662742] [2023-11-06 23:07:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:26,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:26,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:07:26,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 23:07:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:07:27,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:27,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:27,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:27,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929662742] [2023-11-06 23:07:27,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929662742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:27,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:27,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:27,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096571021] [2023-11-06 23:07:27,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:27,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:27,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:27,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:27,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:27,886 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:30,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:33,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:36,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:40,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:42,921 WARN L539 Checker$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 [] [2023-11-06 23:07:45,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:49,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:49,232 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2023-11-06 23:07:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 23:07:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:49,591 INFO L225 Difference]: With dead ends: 68 [2023-11-06 23:07:49,591 INFO L226 Difference]: Without dead ends: 47 [2023-11-06 23:07:49,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:49,593 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 34 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:49,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 80 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 7 Unknown, 0 Unchecked, 21.2s Time] [2023-11-06 23:07:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-06 23:07:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2023-11-06 23:07:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2023-11-06 23:07:49,608 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2023-11-06 23:07:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:49,608 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2023-11-06 23:07:49,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:49,609 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2023-11-06 23:07:49,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 23:07:49,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:49,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:49,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:49,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:49,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:49,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1124243894, now seen corresponding path program 1 times [2023-11-06 23:07:49,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:49,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748959271] [2023-11-06 23:07:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:49,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:49,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:49,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:07:49,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 23:07:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 23:07:53,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:55,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:55,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:55,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748959271] [2023-11-06 23:07:55,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748959271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:55,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:55,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:55,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708540121] [2023-11-06 23:07:55,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:55,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:55,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:55,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:55,261 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:58,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:59,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:03,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:05,148 WARN L539 Checker$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 [] [2023-11-06 23:08:08,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:10,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:13,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:15,373 WARN L539 Checker$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 [] [2023-11-06 23:08:17,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:21,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:24,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:26,443 WARN L539 Checker$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 [] [2023-11-06 23:08:28,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:31,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:34,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:36,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:38,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:41,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:43,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:45,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:49,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:51,025 WARN L539 Checker$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 [] [2023-11-06 23:08:53,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:08:55,038 WARN L539 Checker$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 [] [2023-11-06 23:08:57,045 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 [] [2023-11-06 23:08:57,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:57,598 INFO L93 Difference]: Finished difference Result 81 states and 107 transitions. [2023-11-06 23:08:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:08:57,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 23:08:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:57,609 INFO L225 Difference]: With dead ends: 81 [2023-11-06 23:08:57,609 INFO L226 Difference]: Without dead ends: 58 [2023-11-06 23:08:57,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:08:57,610 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 116 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:57,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 68 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 22 Unknown, 0 Unchecked, 60.9s Time] [2023-11-06 23:08:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-06 23:08:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2023-11-06 23:08:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-11-06 23:08:57,623 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 18 [2023-11-06 23:08:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:57,624 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-11-06 23:08:57,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-11-06 23:08:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 23:08:57,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:57,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:57,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:57,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:08:57,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:57,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:57,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1669842835, now seen corresponding path program 1 times [2023-11-06 23:08:57,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:08:57,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405014545] [2023-11-06 23:08:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:57,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:08:57,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:08:57,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:08:57,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 23:09:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:01,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:01,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:09:01,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:01,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405014545] [2023-11-06 23:09:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405014545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:01,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:01,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:01,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123097167] [2023-11-06 23:09:01,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:01,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:01,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:01,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:01,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:01,405 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:04,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:09:07,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 23:09:08,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:08,215 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2023-11-06 23:09:08,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:08,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 23:09:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:08,217 INFO L225 Difference]: With dead ends: 58 [2023-11-06 23:09:08,217 INFO L226 Difference]: Without dead ends: 56 [2023-11-06 23:09:08,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:08,218 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 43 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:08,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 98 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2023-11-06 23:09:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-06 23:09:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 35. [2023-11-06 23:09:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2023-11-06 23:09:08,236 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 18 [2023-11-06 23:09:08,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:08,236 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2023-11-06 23:09:08,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:08,237 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2023-11-06 23:09:08,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 23:09:08,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:08,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:08,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:08,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:08,439 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:08,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:08,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1686853496, now seen corresponding path program 1 times [2023-11-06 23:09:08,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:08,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223128672] [2023-11-06 23:09:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:08,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:08,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:08,442 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:08,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1f985f-a580-41c5-a5ce-5edf813b3310/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 23:09:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:09:11,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:31,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:38,324 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~SqrtR__xnp1~0#1|) .cse0)) is different from false [2023-11-06 23:09:40,572 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~SqrtR__xnp1~0#1|) .cse0)) is different from true [2023-11-06 23:09:59,358 WARN L293 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-06 23:10:01,960 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__Input~0#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~SqrtR__Input~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from false [2023-11-06 23:10:04,719 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~SqrtR__Input~0#1| |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~SqrtR__Input~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|) |c_ULTIMATE.start_main_~SqrtR__xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))) .cse0)) is different from true [2023-11-06 23:10:09,854 WARN L293 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-06 23:10:14,979 WARN L293 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-06 23:10:20,106 WARN L293 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)