./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:13,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:13,985 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:57:13,994 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:13,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:14,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:14,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:14,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:14,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:14,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:14,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:14,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:14,054 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:14,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:14,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:14,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:14,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:14,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:14,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:14,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:14,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:14,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:14,058 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:14,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:14,059 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:14,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:14,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:14,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:14,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:14,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:14,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:14,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:14,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:14,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:14,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:14,064 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:14,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:14,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:14,064 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:14,065 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_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 [2023-11-19 07:57:14,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:14,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:14,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:14,351 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:14,351 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:14,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2023-11-19 07:57:17,454 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:17,642 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:17,642 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2023-11-19 07:57:17,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/data/507059245/5f400a6f04184cf2923dbe6dbffd625f/FLAGc99005425 [2023-11-19 07:57:17,673 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/data/507059245/5f400a6f04184cf2923dbe6dbffd625f [2023-11-19 07:57:17,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:17,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:17,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:17,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:17,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:17,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efa55ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17, skipping insertion in model container [2023-11-19 07:57:17,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,712 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:17,858 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_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2023-11-19 07:57:17,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:17,884 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:17,895 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_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2023-11-19 07:57:17,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:17,911 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:17,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17 WrapperNode [2023-11-19 07:57:17,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:17,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:17,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:17,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:17,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,942 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2023-11-19 07:57:17,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:17,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:17,944 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:17,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:17,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:17,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:17,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:17,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:17,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (1/1) ... [2023-11-19 07:57:17,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:17,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:18,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:18,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:18,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:18,112 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:18,115 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:18,214 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:18,221 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:18,221 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:57:18,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:18 BoogieIcfgContainer [2023-11-19 07:57:18,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:18,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:18,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:18,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:18,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:17" (1/3) ... [2023-11-19 07:57:18,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce75837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:18, skipping insertion in model container [2023-11-19 07:57:18,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:17" (2/3) ... [2023-11-19 07:57:18,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce75837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:18, skipping insertion in model container [2023-11-19 07:57:18,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:18" (3/3) ... [2023-11-19 07:57:18,234 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2023-11-19 07:57:18,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:18,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:57:18,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:18,308 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e386e03, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:18,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:57:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-19 07:57:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 07:57:18,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:18,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:57:18,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:18,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2023-11-19 07:57:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:18,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404647545] [2023-11-19 07:57:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:18,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:18,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:18,517 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:57:18,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:57:18,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:57:18,526 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 07:57:18,531 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:57:18,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:57:18 BoogieIcfgContainer [2023-11-19 07:57:18,559 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:57:18,562 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:57:18,562 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:57:18,563 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:57:18,563 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:18" (3/4) ... [2023-11-19 07:57:18,567 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:57:18,568 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:57:18,570 INFO L158 Benchmark]: Toolchain (without parser) took 892.20ms. Allocated memory is still 163.6MB. Free memory was 120.9MB in the beginning and 85.2MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-19 07:57:18,571 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:18,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.03ms. Allocated memory is still 163.6MB. Free memory was 120.9MB in the beginning and 110.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:57:18,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.00ms. Allocated memory is still 163.6MB. Free memory was 110.7MB in the beginning and 109.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:57:18,574 INFO L158 Benchmark]: Boogie Preprocessor took 19.05ms. Allocated memory is still 163.6MB. Free memory was 109.0MB in the beginning and 108.3MB in the end (delta: 765.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:18,581 INFO L158 Benchmark]: RCFGBuilder took 261.31ms. Allocated memory is still 163.6MB. Free memory was 107.8MB in the beginning and 99.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:57:18,581 INFO L158 Benchmark]: TraceAbstraction took 332.16ms. Allocated memory is still 163.6MB. Free memory was 98.2MB in the beginning and 85.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:57:18,584 INFO L158 Benchmark]: Witness Printer took 6.64ms. Allocated memory is still 163.6MB. Free memory was 85.6MB in the beginning and 85.2MB in the end (delta: 364.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:18,593 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.03ms. Allocated memory is still 163.6MB. Free memory was 120.9MB in the beginning and 110.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.00ms. Allocated memory is still 163.6MB. Free memory was 110.7MB in the beginning and 109.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.05ms. Allocated memory is still 163.6MB. Free memory was 109.0MB in the beginning and 108.3MB in the end (delta: 765.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 261.31ms. Allocated memory is still 163.6MB. Free memory was 107.8MB in the beginning and 99.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 332.16ms. Allocated memory is still 163.6MB. Free memory was 98.2MB in the beginning and 85.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.64ms. Allocated memory is still 163.6MB. Free memory was 85.6MB in the beginning and 85.2MB in the end (delta: 364.9kB). 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: 13]: 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 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/1.6; VAL [x=1] [L23] COND FALSE !(x1 != x) VAL [x=1] [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:57:18,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/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_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:21,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:21,573 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-19 07:57:21,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:21,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:21,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:21,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:21,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:21,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:21,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:21,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:21,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:21,624 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:21,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:21,627 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:21,628 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:21,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:21,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:21,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:21,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:21,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:21,632 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:57:21,632 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:57:21,633 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:57:21,633 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:21,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:21,634 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:21,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:21,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:21,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:21,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:21,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:21,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:21,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:21,639 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:57:21,639 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:57:21,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:21,640 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:21,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:21,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:21,641 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:57:21,642 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:21,642 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_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa004690edfde808b1aefac96308d2a9e2df62056aeddc89c51bd2015ab29125 [2023-11-19 07:57:22,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:22,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:22,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:22,087 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:22,088 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:22,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2023-11-19 07:57:25,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:25,523 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:25,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2023-11-19 07:57:25,532 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/data/601bd6cde/613df81615794241937fa72f424f14bb/FLAG7059ccd21 [2023-11-19 07:57:25,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/data/601bd6cde/613df81615794241937fa72f424f14bb [2023-11-19 07:57:25,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:25,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:25,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:25,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:25,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:25,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dafe66e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25, skipping insertion in model container [2023-11-19 07:57:25,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,581 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:25,739 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_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2023-11-19 07:57:25,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:25,766 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:25,780 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_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2023-11-19 07:57:25,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:25,801 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:25,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25 WrapperNode [2023-11-19 07:57:25,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:25,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:25,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:25,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:25,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,884 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2023-11-19 07:57:25,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:25,887 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:25,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:25,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:25,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:25,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:25,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:25,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:25,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (1/1) ... [2023-11-19 07:57:25,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:25,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:26,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:57:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:26,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:26,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:26,159 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:26,161 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:27,068 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:27,075 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:27,076 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:57:27,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:27 BoogieIcfgContainer [2023-11-19 07:57:27,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:27,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:27,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:27,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:27,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:25" (1/3) ... [2023-11-19 07:57:27,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6f54e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:27, skipping insertion in model container [2023-11-19 07:57:27,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:25" (2/3) ... [2023-11-19 07:57:27,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6f54e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:27, skipping insertion in model container [2023-11-19 07:57:27,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:27" (3/3) ... [2023-11-19 07:57:27,090 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2023-11-19 07:57:27,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:27,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:57:27,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:27,211 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e609ea0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:27,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:57:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-19 07:57:27,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 07:57:27,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:27,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:57:27,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:27,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2023-11-19 07:57:27,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:27,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740752189] [2023-11-19 07:57:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:27,258 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 [2023-11-19 07:57:27,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:27,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:57:27,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:57:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:28,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:28,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:32,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:32,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:32,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740752189] [2023-11-19 07:57:32,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740752189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:32,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:32,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:32,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52062995] [2023-11-19 07:57:32,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:32,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:32,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:32,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:32,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:32,539 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:36,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:57:38,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:57:38,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:38,020 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2023-11-19 07:57:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:38,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 07:57:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:38,055 INFO L225 Difference]: With dead ends: 20 [2023-11-19 07:57:38,055 INFO L226 Difference]: Without dead ends: 8 [2023-11-19 07:57:38,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:38,062 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:38,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-19 07:57:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-19 07:57:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-19 07:57:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-19 07:57:38,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-11-19 07:57:38,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:38,098 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-19 07:57:38,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-19 07:57:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:57:38,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:38,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:38,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:57:38,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:57:38,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:38,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:38,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2023-11-19 07:57:38,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:38,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630457451] [2023-11-19 07:57:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:38,318 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 [2023-11-19 07:57:38,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:38,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:57:38,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c7ebc-8ae2-4e96-8685-2c3ab906e41e/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:57:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:39,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:39,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:49,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:58,298 WARN L876 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) |c_ULTIMATE.start_main_~x1~0#1|)) is different from true [2023-11-19 07:58:04,716 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2023-11-19 07:58:06,843 WARN L876 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2023-11-19 07:58:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 07:58:06,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:06,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630457451] [2023-11-19 07:58:06,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630457451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:06,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:58:06,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 07:58:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040258916] [2023-11-19 07:58:06,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:06,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:58:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:06,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:58:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=20, Unknown=3, NotChecked=18, Total=56 [2023-11-19 07:58:06,848 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-11-19 07:58:09,013 WARN L876 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-11-19 07:58:21,499 WARN L293 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 14 DAG size of output: 11 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-19 07:58:23,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:58:25,651 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 []