./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f9bb533a6ae968b56a3b4121531d019ea186c25a1e8156a6682080f16505ca3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:04:54,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:04:54,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:04:54,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:04:54,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:04:54,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:04:54,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:04:54,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:04:54,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:04:54,832 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:04:54,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:04:54,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:04:54,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:04:54,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:04:54,837 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:04:54,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:04:54,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:04:54,838 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:04:54,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:04:54,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:04:54,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:04:54,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:04:54,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:04:54,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:04:54,841 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:04:54,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:04:54,842 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:04:54,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:04:54,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:04:54,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:04:54,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:04:54,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:54,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:04:54,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:04:54,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:04:54,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:04:54,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:04:54,872 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:04:54,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:04:54,872 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:04:54,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:04:54,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:04:54,873 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_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f9bb533a6ae968b56a3b4121531d019ea186c25a1e8156a6682080f16505ca3 [2023-11-26 12:04:55,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:04:55,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:04:55,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:04:55,240 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:04:55,241 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:04:55,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2023-11-26 12:04:58,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:04:58,695 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:04:58,696 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2023-11-26 12:04:58,704 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/data/83c9ff494/ca9dcb85e2c842e7a012fcc0001496a5/FLAGab4f21a00 [2023-11-26 12:04:58,719 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/data/83c9ff494/ca9dcb85e2c842e7a012fcc0001496a5 [2023-11-26 12:04:58,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:04:58,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:04:58,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:58,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:04:58,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:04:58,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:58" (1/1) ... [2023-11-26 12:04:58,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddda9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:58, skipping insertion in model container [2023-11-26 12:04:58,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:58" (1/1) ... [2023-11-26 12:04:58,755 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:04:58,951 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_52cf833a-31dd-485d-a56b-f4ed0dc806c5/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2023-11-26 12:04:58,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:58,984 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:04:59,000 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_52cf833a-31dd-485d-a56b-f4ed0dc806c5/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2023-11-26 12:04:59,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:59,025 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:04:59,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59 WrapperNode [2023-11-26 12:04:59,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:59,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:59,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:04:59,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:04:59,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,070 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2023-11-26 12:04:59,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:59,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:04:59,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:04:59,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:04:59,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,084 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,096 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 12:04:59,096 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,097 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:04:59,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:04:59,114 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:04:59,114 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:04:59,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (1/1) ... [2023-11-26 12:04:59,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:59,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:59,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:04:59,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:04:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:04:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:04:59,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:04:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:04:59,285 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:04:59,287 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:04:59,404 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:04:59,429 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:04:59,430 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:04:59,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:59 BoogieIcfgContainer [2023-11-26 12:04:59,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:04:59,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:04:59,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:04:59,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:04:59,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:04:58" (1/3) ... [2023-11-26 12:04:59,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:59, skipping insertion in model container [2023-11-26 12:04:59,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:59" (2/3) ... [2023-11-26 12:04:59,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:59, skipping insertion in model container [2023-11-26 12:04:59,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:59" (3/3) ... [2023-11-26 12:04:59,440 INFO L112 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2023-11-26 12:04:59,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:04:59,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:04:59,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:59,515 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6781429d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:59,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:04:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 12:04:59,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:59,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:04:59,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:59,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:59,531 INFO L85 PathProgramCache]: Analyzing trace with hash 57541414, now seen corresponding path program 1 times [2023-11-26 12:04:59,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:59,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308960421] [2023-11-26 12:04:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:59,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:59,644 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:04:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:59,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:04:59,678 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:04:59,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 12:04:59,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:04:59,688 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 12:04:59,692 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:04:59,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:04:59 BoogieIcfgContainer [2023-11-26 12:04:59,707 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:04:59,708 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:04:59,708 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:04:59,708 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:04:59,709 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:59" (3/4) ... [2023-11-26 12:04:59,711 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 12:04:59,713 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:04:59,714 INFO L158 Benchmark]: Toolchain (without parser) took 990.05ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 76.8MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-26 12:04:59,715 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 129.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:04:59,715 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.52ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 103.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:04:59,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.61ms. Allocated memory is still 161.5MB. Free memory was 103.9MB in the beginning and 102.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:04:59,717 INFO L158 Benchmark]: Boogie Preprocessor took 41.40ms. Allocated memory is still 161.5MB. Free memory was 102.4MB in the beginning and 100.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:04:59,718 INFO L158 Benchmark]: RCFGBuilder took 317.47ms. Allocated memory is still 161.5MB. Free memory was 100.8MB in the beginning and 90.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:04:59,718 INFO L158 Benchmark]: TraceAbstraction took 274.41ms. Allocated memory is still 161.5MB. Free memory was 89.8MB in the beginning and 77.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 12:04:59,719 INFO L158 Benchmark]: Witness Printer took 5.10ms. Allocated memory is still 161.5MB. Free memory was 77.2MB in the beginning and 76.8MB in the end (delta: 402.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:04:59,723 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 129.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.52ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 103.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.61ms. Allocated memory is still 161.5MB. Free memory was 103.9MB in the beginning and 102.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.40ms. Allocated memory is still 161.5MB. Free memory was 102.4MB in the beginning and 100.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 317.47ms. Allocated memory is still 161.5MB. Free memory was 100.8MB in the beginning and 90.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 274.41ms. Allocated memory is still 161.5MB. Free memory was 89.8MB in the beginning and 77.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.10ms. Allocated memory is still 161.5MB. Free memory was 77.2MB in the beginning and 76.8MB in the end (delta: 402.4kB). 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: 4]: 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 someBinaryLONGDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; VAL [i=1, res=0] [L12] COND FALSE !(x != 0) VAL [i=1, res=0] [L19] CALL __VERIFIER_assert(res > 67050) [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s 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 [2023-11-26 12:04:59,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f9bb533a6ae968b56a3b4121531d019ea186c25a1e8156a6682080f16505ca3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:02,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:02,687 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 12:05:02,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:02,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:02,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:02,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:02,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:02,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:05:02,754 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:05:02,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:05:02,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:05:02,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:02,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:02,758 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:02,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:02,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:05:02,760 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:05:02,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:05:02,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:02,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:05:02,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:05:02,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:05:02,763 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:05:02,764 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 12:05:02,764 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 12:05:02,764 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:05:02,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:05:02,765 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:02,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:02,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:02,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:05:02,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:05:02,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:02,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:02,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:05:02,770 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:05:02,770 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 12:05:02,770 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 12:05:02,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:05:02,771 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:05:02,771 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:05:02,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:05:02,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:05:02,772 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 12:05:02,773 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_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f9bb533a6ae968b56a3b4121531d019ea186c25a1e8156a6682080f16505ca3 [2023-11-26 12:05:03,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:03,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:03,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:03,199 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:03,199 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:03,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2023-11-26 12:05:06,371 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:05:06,632 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:05:06,632 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2023-11-26 12:05:06,641 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/data/902e3ca1e/da181f8c420b421589f35e7121c21135/FLAG72d025a52 [2023-11-26 12:05:06,657 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/data/902e3ca1e/da181f8c420b421589f35e7121c21135 [2023-11-26 12:05:06,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:05:06,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:05:06,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:06,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:05:06,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:05:06,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:06,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3057a3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06, skipping insertion in model container [2023-11-26 12:05:06,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:06,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:05:06,912 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_52cf833a-31dd-485d-a56b-f4ed0dc806c5/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2023-11-26 12:05:06,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:06,958 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:05:06,974 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_52cf833a-31dd-485d-a56b-f4ed0dc806c5/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2023-11-26 12:05:06,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:06,997 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:05:06,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06 WrapperNode [2023-11-26 12:05:06,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:06,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:07,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:05:07,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:05:07,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,043 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2023-11-26 12:05:07,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:07,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:05:07,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:05:07,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:05:07,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,092 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 12:05:07,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:05:07,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:05:07,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:05:07,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:05:07,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (1/1) ... [2023-11-26 12:05:07,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:07,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:07,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:05:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:05:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:05:07,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:05:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 12:05:07,338 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:05:07,342 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:05:11,649 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:05:11,679 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:05:11,679 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:05:11,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:11 BoogieIcfgContainer [2023-11-26 12:05:11,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:05:11,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:05:11,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:05:11,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:05:11,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:06" (1/3) ... [2023-11-26 12:05:11,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4e2762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:11, skipping insertion in model container [2023-11-26 12:05:11,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:06" (2/3) ... [2023-11-26 12:05:11,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4e2762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:11, skipping insertion in model container [2023-11-26 12:05:11,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:11" (3/3) ... [2023-11-26 12:05:11,691 INFO L112 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2023-11-26 12:05:11,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:05:11,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:05:11,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:05:11,799 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2821f9d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:05:11,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:05:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 12:05:11,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:11,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:05:11,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:05:11,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:11,814 INFO L85 PathProgramCache]: Analyzing trace with hash 57541414, now seen corresponding path program 1 times [2023-11-26 12:05:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:05:11,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122775680] [2023-11-26 12:05:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:11,828 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 [2023-11-26 12:05:11,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:05:11,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:05:11,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:05:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:11,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:05:11,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:12,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:05:12,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:05:12,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122775680] [2023-11-26 12:05:12,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122775680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:12,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:12,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:12,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076857304] [2023-11-26 12:05:12,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:12,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:12,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:05:12,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:12,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:12,126 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2023-11-26 12:05:16,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 12:05:18,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 12:05:18,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:18,778 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2023-11-26 12:05:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:18,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 [2023-11-26 12:05:18,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:18,791 INFO L225 Difference]: With dead ends: 15 [2023-11-26 12:05:18,792 INFO L226 Difference]: Without dead ends: 7 [2023-11-26 12:05:18,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:18,799 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:18,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-11-26 12:05:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-26 12:05:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-26 12:05:18,836 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) [2023-11-26 12:05:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-26 12:05:18,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-11-26 12:05:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:18,840 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-26 12:05:18,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2023-11-26 12:05:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-26 12:05:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 12:05:18,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:18,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:05:18,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-26 12:05:19,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:05:19,045 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:05:19,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1785449205, now seen corresponding path program 1 times [2023-11-26 12:05:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:05:19,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094784611] [2023-11-26 12:05:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:19,054 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 [2023-11-26 12:05:19,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:05:19,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:05:19,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:05:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:19,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:05:19,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:21,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:05:30,720 WARN L854 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2023-11-26 12:05:34,782 WARN L876 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2023-11-26 12:05:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-26 12:05:34,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:05:34,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094784611] [2023-11-26 12:05:34,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094784611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:05:34,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:05:34,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-26 12:05:34,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001468385] [2023-11-26 12:05:34,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:34,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:05:34,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:05:34,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:05:34,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2023-11-26 12:05:34,788 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-26 12:05:38,871 WARN L876 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-11-26 12:05:43,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 12:05:46,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 12:05:47,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 12:05:51,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 12:05:56,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 12:05:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:56,277 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2023-11-26 12:05:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:05:56,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 [2023-11-26 12:05:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:56,348 INFO L225 Difference]: With dead ends: 13 [2023-11-26 12:05:56,348 INFO L226 Difference]: Without dead ends: 9 [2023-11-26 12:05:56,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2023-11-26 12:05:56,350 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:56,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 3 Unknown, 10 Unchecked, 17.4s Time] [2023-11-26 12:05:56,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-26 12:05:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-26 12:05:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2023-11-26 12:05:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-26 12:05:56,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2023-11-26 12:05:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:56,356 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-26 12:05:56,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-26 12:05:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-26 12:05:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 12:05:56,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:56,358 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2023-11-26 12:05:56,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:05:56,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:05:56,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:05:56,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:56,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2116940523, now seen corresponding path program 2 times [2023-11-26 12:05:56,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:05:56,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591300193] [2023-11-26 12:05:56,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:05:56,560 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 [2023-11-26 12:05:56,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:05:56,562 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:05:56,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cf833a-31dd-485d-a56b-f4ed0dc806c5/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:05:58,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:05:58,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:05:58,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:05:58,677 INFO L285 TraceCheckSpWp]: Computing forward predicates...