./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:08,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:08,726 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:48:08,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:08,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:08,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:08,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:08,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:08,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:08,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:08,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:08,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:08,795 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:08,797 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:08,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:48:08,798 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:08,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:48:08,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:08,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:08,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:48:08,801 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:08,801 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:48:08,802 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:08,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:48:08,802 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:08,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:08,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:08,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:08,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:08,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:08,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:08,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:48:08,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:48:08,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:48:08,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:08,807 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:48:08,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:08,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:08,808 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:08,808 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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 [2023-11-06 22:48:09,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:09,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:09,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:09,152 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:09,153 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:09,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-11-06 22:48:12,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:12,508 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:12,509 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-11-06 22:48:12,515 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/data/f027af6a2/8eecf16c668c4f11944982a13de7aa4e/FLAGe4a126513 [2023-11-06 22:48:12,529 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/data/f027af6a2/8eecf16c668c4f11944982a13de7aa4e [2023-11-06 22:48:12,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:12,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:12,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:12,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:12,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:12,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1a3c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12, skipping insertion in model container [2023-11-06 22:48:12,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:12,743 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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-11-06 22:48:12,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:12,766 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:12,779 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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-11-06 22:48:12,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:12,795 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:12,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12 WrapperNode [2023-11-06 22:48:12,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:12,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:12,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:12,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:12,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,836 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2023-11-06 22:48:12,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:12,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:12,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:12,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:12,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,867 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:12,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:12,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:12,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:12,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (1/1) ... [2023-11-06 22:48:12,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:12,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:12,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:12,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:12,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:48:13,037 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:13,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:13,194 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:13,201 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:13,201 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:48:13,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:13 BoogieIcfgContainer [2023-11-06 22:48:13,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:13,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:13,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:13,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:13,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:12" (1/3) ... [2023-11-06 22:48:13,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109d7f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:13, skipping insertion in model container [2023-11-06 22:48:13,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:12" (2/3) ... [2023-11-06 22:48:13,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109d7f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:13, skipping insertion in model container [2023-11-06 22:48:13,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:13" (3/3) ... [2023-11-06 22:48:13,221 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i.p+cfa-reducer.c [2023-11-06 22:48:13,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:13,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:48:13,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:13,319 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;@1401a6cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:13,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:48:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:48:13,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:13,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:48:13,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:13,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:13,345 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2023-11-06 22:48:13,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:13,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675828247] [2023-11-06 22:48:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:13,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:48:13,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:48:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:48:13,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:48:13,589 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:48:13,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:48:13,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:48:13,599 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 22:48:13,604 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:48:13,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:48:13 BoogieIcfgContainer [2023-11-06 22:48:13,627 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:48:13,630 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:48:13,630 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:48:13,630 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:48:13,631 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:13" (3/4) ... [2023-11-06 22:48:13,635 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:48:13,637 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:48:13,638 INFO L158 Benchmark]: Toolchain (without parser) took 1104.31ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 68.7MB in the beginning and 133.6MB in the end (delta: -64.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:48:13,639 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 130.0MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:48:13,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.54ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 68.5MB in the beginning and 134.1MB in the end (delta: -65.6MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2023-11-06 22:48:13,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.17ms. Allocated memory is still 165.7MB. Free memory was 134.1MB in the beginning and 132.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:48:13,641 INFO L158 Benchmark]: Boogie Preprocessor took 31.57ms. Allocated memory is still 165.7MB. Free memory was 132.7MB in the beginning and 132.0MB in the end (delta: 742.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:48:13,642 INFO L158 Benchmark]: RCFGBuilder took 333.92ms. Allocated memory is still 165.7MB. Free memory was 132.0MB in the beginning and 122.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:48:13,642 INFO L158 Benchmark]: TraceAbstraction took 417.16ms. Allocated memory is still 165.7MB. Free memory was 122.3MB in the beginning and 134.0MB in the end (delta: -11.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:48:13,643 INFO L158 Benchmark]: Witness Printer took 6.98ms. Allocated memory is still 165.7MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:48:13,646 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 130.0MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.54ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 68.5MB in the beginning and 134.1MB in the end (delta: -65.6MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.17ms. Allocated memory is still 165.7MB. Free memory was 134.1MB in the beginning and 132.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.57ms. Allocated memory is still 165.7MB. Free memory was 132.7MB in the beginning and 132.0MB in the end (delta: 742.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.92ms. Allocated memory is still 165.7MB. Free memory was 132.0MB in the beginning and 122.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 417.16ms. Allocated memory is still 165.7MB. Free memory was 122.3MB in the beginning and 134.0MB in the end (delta: -11.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.98ms. Allocated memory is still 165.7MB. Free memory is still 133.6MB. 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: 27]: 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 someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 1.600000023841858; VAL [__return_main=0, main__x=1] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__x=1] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__x=1] [L27] reach_error() VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:48:13,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:16,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:16,525 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 22:48:16,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:16,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:16,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:16,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:16,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:16,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:16,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:16,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:16,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:16,587 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:16,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:16,590 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:48:16,590 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:16,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:16,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:16,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:48:16,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:16,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:48:16,594 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:48:16,594 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:48:16,595 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:48:16,595 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:16,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:48:16,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:16,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:16,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:16,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:16,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:16,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:16,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:16,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:48:16,600 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:48:16,600 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:48:16,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:16,601 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:48:16,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:16,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:16,603 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:48:16,603 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:16,603 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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4582c3eb38d182065b024eaa1ecbc8cf3ce1cd8f100c8eebac06484d412900d6 [2023-11-06 22:48:17,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:17,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:17,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:17,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:17,064 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:17,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-11-06 22:48:20,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:20,617 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:20,617 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-11-06 22:48:20,625 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/data/72f2def33/c562824477e744dea1b41035cf5aa939/FLAG3b6b78b3b [2023-11-06 22:48:20,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/data/72f2def33/c562824477e744dea1b41035cf5aa939 [2023-11-06 22:48:20,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:20,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:20,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:20,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:20,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:20,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:20,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438bdf1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20, skipping insertion in model container [2023-11-06 22:48:20,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:20,673 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:20,822 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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-11-06 22:48:20,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:20,843 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:20,859 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_dafd9702-8388-4d1e-bd8f-58e90d00df0e/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-11-06 22:48:20,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:20,877 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:20,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20 WrapperNode [2023-11-06 22:48:20,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:20,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:20,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:20,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:20,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:20,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:20,956 INFO L138 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-11-06 22:48:20,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:20,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:20,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:20,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:20,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:20,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:20,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:20,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:20,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:21,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:21,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:21,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:21,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:21,022 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:21,022 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:21,022 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:21,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (1/1) ... [2023-11-06 22:48:21,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:21,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:21,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:21,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:21,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:21,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:21,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:48:21,197 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:21,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:25,933 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:25,940 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:25,940 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:48:25,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:25 BoogieIcfgContainer [2023-11-06 22:48:25,942 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:25,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:25,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:25,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:25,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:20" (1/3) ... [2023-11-06 22:48:25,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4388315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:25, skipping insertion in model container [2023-11-06 22:48:25,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:20" (2/3) ... [2023-11-06 22:48:25,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4388315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:25, skipping insertion in model container [2023-11-06 22:48:25,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:25" (3/3) ... [2023-11-06 22:48:25,955 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i.p+cfa-reducer.c [2023-11-06 22:48:25,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:25,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:48:26,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:26,036 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;@2f8456fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:26,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:48:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:48:26,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:26,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:48:26,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:26,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2023-11-06 22:48:26,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:48:26,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624908652] [2023-11-06 22:48:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:26,069 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 22:48:26,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:48:26,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 22:48:26,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 22:48:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:27,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:48:27,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:33,647 WARN L861 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0)))))) is different from true [2023-11-06 22:48:33,661 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 22:48:33,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:48:33,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:48:33,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624908652] [2023-11-06 22:48:33,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624908652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:33,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:33,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:33,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586486947] [2023-11-06 22:48:33,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:33,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:48:33,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:48:33,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:48:33,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-06 22:48:33,709 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 22:48:37,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:48:39,601 WARN L861 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-11-06 22:48:42,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:48:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:43,101 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-11-06 22:48:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:48:43,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-06 22:48:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:43,110 INFO L225 Difference]: With dead ends: 16 [2023-11-06 22:48:43,111 INFO L226 Difference]: Without dead ends: 7 [2023-11-06 22:48:43,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=7, Invalid=5, Unknown=2, NotChecked=6, Total=20 [2023-11-06 22:48:43,118 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:43,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 2 Unknown, 11 Unchecked, 6.9s Time] [2023-11-06 22:48:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-06 22:48:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-06 22:48:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 22:48:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-06 22:48:43,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-11-06 22:48:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:43,151 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-06 22:48:43,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 22:48:43,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-06 22:48:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:48:43,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:43,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:48:43,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:43,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 22:48:43,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:43,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:43,359 INFO L85 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2023-11-06 22:48:43,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:48:43,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903048920] [2023-11-06 22:48:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:43,360 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 22:48:43,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:48:43,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 22:48:43,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 22:48:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:48:45,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:58,679 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) .cse0)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))))) is different from true [2023-11-06 22:48:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:48:58,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:05,785 WARN L839 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) is different from false [2023-11-06 22:49:15,477 WARN L839 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))) is different from false [2023-11-06 22:49:17,948 WARN L861 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))) is different from true [2023-11-06 22:49:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:49:17,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:17,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903048920] [2023-11-06 22:49:17,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903048920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:17,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:17,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-06 22:49:17,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827581287] [2023-11-06 22:49:17,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:17,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:49:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:17,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:49:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=14, Unknown=4, NotChecked=24, Total=56 [2023-11-06 22:49:17,954 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:20,492 WARN L861 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-11-06 22:49:22,669 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-11-06 22:49:25,172 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (and (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2023-11-06 22:49:27,348 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 800000011920929.0 500000000000000.0)))) (and (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) .cse0)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))) (not (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|)))) is different from true [2023-11-06 22:49:30,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:49:32,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:49:34,441 WARN L539 Checker$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 22:49:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:34,947 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2023-11-06 22:49:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:34,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 22:49:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:34,949 INFO L225 Difference]: With dead ends: 11 [2023-11-06 22:49:34,949 INFO L226 Difference]: Without dead ends: 8 [2023-11-06 22:49:34,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=20, Invalid=16, Unknown=8, NotChecked=66, Total=110 [2023-11-06 22:49:34,951 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:34,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 3 Unknown, 29 Unchecked, 7.6s Time] [2023-11-06 22:49:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-06 22:49:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-06 22:49:34,955 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) [2023-11-06 22:49:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-06 22:49:34,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-11-06 22:49:34,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:34,956 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-06 22:49:34,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-06 22:49:34,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:49:34,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:34,957 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:49:34,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 22:49:35,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 22:49:35,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:35,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:35,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 2 times [2023-11-06 22:49:35,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:35,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615565125] [2023-11-06 22:49:35,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:49:35,159 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 22:49:35,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:35,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 22:49:35,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/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 22:49:37,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:49:37,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:49:38,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:49:38,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:42,607 WARN L861 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-11-06 22:49:48,841 WARN L293 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-06 22:49:51,397 WARN L861 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 800000011920929.0 500000000000000.0)))) (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0))) |c_ULTIMATE.start_main_~main__x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-11-06 22:49:59,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615565125] [2023-11-06 22:49:59,397 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-06 22:49:59,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:59,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:59,598 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 1423 column 7: canceled at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1511) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:226) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:359) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:343) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:441) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-06 22:49:59,602 INFO L158 Benchmark]: Toolchain (without parser) took 98960.04ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 45.6MB in the beginning and 62.0MB in the end (delta: -16.4MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2023-11-06 22:49:59,602 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 69.2MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:49:59,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.04ms. Allocated memory is still 69.2MB. Free memory was 45.5MB in the beginning and 34.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:49:59,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.52ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 34.8MB in the beginning and 76.4MB in the end (delta: -41.6MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2023-11-06 22:49:59,606 INFO L158 Benchmark]: Boogie Preprocessor took 63.65ms. Allocated memory is still 96.5MB. Free memory was 76.4MB in the beginning and 75.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:49:59,607 INFO L158 Benchmark]: RCFGBuilder took 4920.72ms. Allocated memory is still 96.5MB. Free memory was 75.0MB in the beginning and 65.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:49:59,607 INFO L158 Benchmark]: TraceAbstraction took 93655.48ms. Allocated memory is still 96.5MB. Free memory was 65.5MB in the beginning and 62.0MB in the end (delta: 3.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-11-06 22:49:59,611 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 69.2MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.04ms. Allocated memory is still 69.2MB. Free memory was 45.5MB in the beginning and 34.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.52ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 34.8MB in the beginning and 76.4MB in the end (delta: -41.6MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.65ms. Allocated memory is still 96.5MB. Free memory was 76.4MB in the beginning and 75.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 4920.72ms. Allocated memory is still 96.5MB. Free memory was 75.0MB in the beginning and 65.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 93655.48ms. Allocated memory is still 96.5MB. Free memory was 65.5MB in the beginning and 62.0MB in the end (delta: 3.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 1423 column 7: canceled de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 1423 column 7: canceled: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1511) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-06 22:49:59,856 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-11-06 22:49:59,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dafd9702-8388-4d1e-bd8f-58e90d00df0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: line 1423 column 7: canceled