./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash afde2bd0ce234bf8b4933e5a5437c8e1946600ea23fb2a4648cacd72bbfda8e3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:42:06,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:42:06,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:42:06,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:42:06,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:42:06,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:42:06,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:42:06,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:42:06,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:42:06,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:42:06,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:42:06,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:42:06,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:42:06,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:42:06,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:42:06,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:42:06,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:42:06,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:42:06,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:42:06,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:42:06,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:42:06,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:42:06,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:42:06,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:42:06,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:42:06,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:42:06,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:42:06,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:42:06,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:42:06,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:42:06,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:42:06,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:42:06,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:42:06,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:42:06,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:42:06,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:42:06,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:42:06,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:42:06,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:42:06,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:42:06,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:42:06,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:42:06,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:42:06,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:42:06,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:42:06,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:42:06,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:42:06,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:42:06,350 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:42:06,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:42:06,351 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:42:06,351 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:42:06,351 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:42:06,351 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:42:06,351 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:42:06,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:42:06,352 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:42:06,352 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:42:06,352 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:42:06,353 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:42:06,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:42:06,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:42:06,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:42:06,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:42:06,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:42:06,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:42:06,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:42:06,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:42:06,355 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:42:06,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:42:06,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:42:06,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:42:06,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:42:06,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:42:06,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:06,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:42:06,357 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:42:06,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:42:06,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:42:06,358 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:42:06,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:42:06,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:42:06,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:42:06,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afde2bd0ce234bf8b4933e5a5437c8e1946600ea23fb2a4648cacd72bbfda8e3 [2022-11-19 06:42:06,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:42:06,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:42:06,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:42:06,666 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:42:06,667 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:42:06,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2022-11-19 06:42:06,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data/8f00ef916/d8a26a3c3c7241019493a459f5da2663/FLAGa6a963d7e [2022-11-19 06:42:07,328 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:42:07,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2022-11-19 06:42:07,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data/8f00ef916/d8a26a3c3c7241019493a459f5da2663/FLAGa6a963d7e [2022-11-19 06:42:07,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data/8f00ef916/d8a26a3c3c7241019493a459f5da2663 [2022-11-19 06:42:07,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:42:07,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:42:07,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:07,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:42:07,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:42:07,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:07" (1/1) ... [2022-11-19 06:42:07,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b635b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:07, skipping insertion in model container [2022-11-19 06:42:07,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:07" (1/1) ... [2022-11-19 06:42:07,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:42:07,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:42:08,009 WARN L234 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_98b14158-78b1-4213-a758-a333799f8822/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2022-11-19 06:42:08,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:08,046 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:42:08,067 WARN L234 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_98b14158-78b1-4213-a758-a333799f8822/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2022-11-19 06:42:08,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:08,088 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:42:08,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08 WrapperNode [2022-11-19 06:42:08,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:08,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:08,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:42:08,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:42:08,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,134 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2022-11-19 06:42:08,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:08,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:42:08,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:42:08,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:42:08,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,169 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:42:08,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:42:08,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:42:08,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:42:08,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (1/1) ... [2022-11-19 06:42:08,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:08,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:08,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:42:08,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:42:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:42:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:42:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:42:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:42:08,358 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:42:08,360 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:42:08,464 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:42:08,480 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:42:08,481 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:42:08,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:08 BoogieIcfgContainer [2022-11-19 06:42:08,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:42:08,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:42:08,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:42:08,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:42:08,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:42:07" (1/3) ... [2022-11-19 06:42:08,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bea247e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:08, skipping insertion in model container [2022-11-19 06:42:08,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:08" (2/3) ... [2022-11-19 06:42:08,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bea247e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:08, skipping insertion in model container [2022-11-19 06:42:08,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:08" (3/3) ... [2022-11-19 06:42:08,495 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i.p+cfa-reducer.c [2022-11-19 06:42:08,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:42:08,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:42:08,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:42:08,591 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=FINITE_AUTOMATA, 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;@35271162, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:42:08,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:42:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2022-11-19 06:42:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:42:08,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:08,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:42:08,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:08,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:08,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1497591, now seen corresponding path program 1 times [2022-11-19 06:42:08,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:08,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794360185] [2022-11-19 06:42:08,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:08,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:42:08,729 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:42:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:42:08,764 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:42:08,766 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:42:08,768 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:42:08,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:42:08,777 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 06:42:08,782 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:42:08,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:42:08 BoogieIcfgContainer [2022-11-19 06:42:08,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:42:08,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:42:08,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:42:08,808 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:42:08,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:08" (3/4) ... [2022-11-19 06:42:08,812 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:42:08,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:42:08,814 INFO L158 Benchmark]: Toolchain (without parser) took 1125.62ms. Allocated memory is still 125.8MB. Free memory was 91.3MB in the beginning and 74.8MB in the end (delta: 16.5MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2022-11-19 06:42:08,815 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:42:08,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.31ms. Allocated memory is still 125.8MB. Free memory was 91.0MB in the beginning and 100.9MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:42:08,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.23ms. Allocated memory is still 125.8MB. Free memory was 100.9MB in the beginning and 99.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:42:08,818 INFO L158 Benchmark]: Boogie Preprocessor took 37.19ms. Allocated memory is still 125.8MB. Free memory was 99.3MB in the beginning and 98.4MB in the end (delta: 963.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:42:08,818 INFO L158 Benchmark]: RCFGBuilder took 310.18ms. Allocated memory is still 125.8MB. Free memory was 98.4MB in the beginning and 88.8MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:42:08,819 INFO L158 Benchmark]: TraceAbstraction took 319.42ms. Allocated memory is still 125.8MB. Free memory was 88.4MB in the beginning and 75.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:42:08,820 INFO L158 Benchmark]: Witness Printer took 6.11ms. Allocated memory is still 125.8MB. Free memory was 75.3MB in the beginning and 74.8MB in the end (delta: 488.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:42:08,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.31ms. Allocated memory is still 125.8MB. Free memory was 91.0MB in the beginning and 100.9MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.23ms. Allocated memory is still 125.8MB. Free memory was 100.9MB in the beginning and 99.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.19ms. Allocated memory is still 125.8MB. Free memory was 99.3MB in the beginning and 98.4MB in the end (delta: 963.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 310.18ms. Allocated memory is still 125.8MB. Free memory was 98.4MB in the beginning and 88.8MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 319.42ms. Allocated memory is still 125.8MB. Free memory was 88.4MB in the beginning and 75.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.11ms. Allocated memory is still 125.8MB. Free memory was 75.3MB in the beginning and 74.8MB in the end (delta: 488.6kB). 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 call to reach_error is unreachable Unable to prove that 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; [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 2.5; 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 [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L27] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 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=7occurred 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, 4 NumberOfCodeBlocks, 4 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 [2022-11-19 06:42:08,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash afde2bd0ce234bf8b4933e5a5437c8e1946600ea23fb2a4648cacd72bbfda8e3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:42:11,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:42:11,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:42:11,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:42:11,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:42:11,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:42:11,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:42:11,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:42:11,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:42:11,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:42:11,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:42:11,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:42:11,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:42:11,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:42:11,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:42:11,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:42:11,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:42:11,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:42:11,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:42:11,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:42:11,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:42:11,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:42:11,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:42:11,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:42:11,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:42:11,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:42:11,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:42:11,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:42:11,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:42:11,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:42:11,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:42:11,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:42:11,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:42:11,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:42:11,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:42:11,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:42:11,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:42:11,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:42:11,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:42:11,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:42:11,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:42:11,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 06:42:11,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:42:11,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:42:11,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:42:11,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:42:11,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:42:11,659 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:42:11,660 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:42:11,660 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:42:11,660 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:42:11,660 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:42:11,662 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:42:11,662 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:42:11,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:42:11,664 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:42:11,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:42:11,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:42:11,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:42:11,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:42:11,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:42:11,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:42:11,666 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:42:11,666 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:42:11,666 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:42:11,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:42:11,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:42:11,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:42:11,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:42:11,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:42:11,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:42:11,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:11,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:42:11,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:42:11,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:42:11,669 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:42:11,670 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:42:11,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:42:11,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:42:11,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:42:11,671 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afde2bd0ce234bf8b4933e5a5437c8e1946600ea23fb2a4648cacd72bbfda8e3 [2022-11-19 06:42:12,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:42:12,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:42:12,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:42:12,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:42:12,114 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:42:12,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2022-11-19 06:42:12,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data/b86970764/eb4c7fe2934743d492d475169e22a5a9/FLAG2590f9bea [2022-11-19 06:42:12,824 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:42:12,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2022-11-19 06:42:12,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data/b86970764/eb4c7fe2934743d492d475169e22a5a9/FLAG2590f9bea [2022-11-19 06:42:13,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/data/b86970764/eb4c7fe2934743d492d475169e22a5a9 [2022-11-19 06:42:13,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:42:13,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:42:13,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:13,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:42:13,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:42:13,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48740a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13, skipping insertion in model container [2022-11-19 06:42:13,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:42:13,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:42:13,418 WARN L234 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_98b14158-78b1-4213-a758-a333799f8822/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2022-11-19 06:42:13,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:13,446 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:42:13,511 WARN L234 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_98b14158-78b1-4213-a758-a333799f8822/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2022-11-19 06:42:13,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:13,529 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:42:13,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13 WrapperNode [2022-11-19 06:42:13,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:13,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:13,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:42:13,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:42:13,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,579 INFO L138 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-11-19 06:42:13,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:13,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:42:13,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:42:13,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:42:13,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,630 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:42:13,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:42:13,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:42:13,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:42:13,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (1/1) ... [2022-11-19 06:42:13,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:13,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:13,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:42:13,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:42:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:42:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:42:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:42:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:42:13,858 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:42:13,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:42:18,583 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:42:18,589 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:42:18,589 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:42:18,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:18 BoogieIcfgContainer [2022-11-19 06:42:18,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:42:18,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:42:18,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:42:18,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:42:18,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:42:13" (1/3) ... [2022-11-19 06:42:18,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ebe5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:18, skipping insertion in model container [2022-11-19 06:42:18,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:13" (2/3) ... [2022-11-19 06:42:18,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ebe5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:18, skipping insertion in model container [2022-11-19 06:42:18,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:18" (3/3) ... [2022-11-19 06:42:18,602 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i.p+cfa-reducer.c [2022-11-19 06:42:18,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:42:18,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:42:18,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:42:18,700 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=FINITE_AUTOMATA, 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;@2d5aa92b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:42:18,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:42:18,705 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) [2022-11-19 06:42:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:42:18,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:18,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:42:18,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2022-11-19 06:42:18,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:42:18,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335961912] [2022-11-19 06:42:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:18,759 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 [2022-11-19 06:42:18,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:42:18,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:42:18,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:42:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:19,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:42:19,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:26,120 WARN L859 $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|) (= ((_ 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 (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) is different from true [2022-11-19 06:42:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:26,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:42:26,146 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:42:26,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335961912] [2022-11-19 06:42:26,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335961912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:26,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:26,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:42:26,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152354195] [2022-11-19 06:42:26,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:26,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:42:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:42:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:42:26,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2022-11-19 06:42:26,197 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) [2022-11-19 06:42:29,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:42:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:29,463 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-11-19 06:42:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:42:29,475 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 [2022-11-19 06:42:29,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:29,484 INFO L225 Difference]: With dead ends: 16 [2022-11-19 06:42:29,484 INFO L226 Difference]: Without dead ends: 7 [2022-11-19 06:42:29,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2022-11-19 06:42:29,497 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:29,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 8 Unchecked, 3.2s Time] [2022-11-19 06:42:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-19 06:42:29,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-19 06:42:29,541 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) [2022-11-19 06:42:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-11-19 06:42:29,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-11-19 06:42:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:29,544 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-11-19 06:42:29,545 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) [2022-11-19 06:42:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-11-19 06:42:29,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:42:29,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:29,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:42:29,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:42:29,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:42:29,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:29,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2022-11-19 06:42:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:42:29,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28168428] [2022-11-19 06:42:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:29,770 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 [2022-11-19 06:42:29,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:42:29,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:42:29,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:42:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:30,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:42:30,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:37,631 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~main__x~0#1| ((_ 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))) (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|))) is different from true [2022-11-19 06:42:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-19 06:42:37,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:44,554 WARN L837 $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 (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) is different from false [2022-11-19 06:42:52,750 WARN L837 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 [2022-11-19 06:42:55,039 WARN L859 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 [2022-11-19 06:42:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-19 06:42:55,040 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:42:55,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28168428] [2022-11-19 06:42:55,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28168428] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:55,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [373942127] [2022-11-19 06:42:55,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:55,041 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:42:55,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:42:55,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:42:55,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 06:42:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:56,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:42:56,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:02,352 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:43:09,248 WARN L837 $PredicateComparison]: unable to prove that (exists ((currentRoundingMode RoundingMode)) (let ((.cse0 ((_ to_fp 11 53) currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|) (= ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) .cse0)) |c_ULTIMATE.start_main_~main__x~0#1|)))) is different from false [2022-11-19 06:43:18,347 WARN L837 $PredicateComparison]: unable to prove that (exists ((currentRoundingMode RoundingMode)) (let ((.cse1 ((_ to_fp 11 53) currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode .cse0) .cse1)) .cse0)))) is different from false [2022-11-19 06:43:20,476 WARN L859 $PredicateComparison]: unable to prove that (exists ((currentRoundingMode RoundingMode)) (let ((.cse1 ((_ to_fp 11 53) currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode .cse0) .cse1)) .cse0)))) is different from true [2022-11-19 06:43:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-19 06:43:27,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:43:40,610 WARN L837 $PredicateComparison]: unable to prove that (forall ((currentRoundingMode RoundingMode)) (not (let ((.cse1 ((_ to_fp 11 53) currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode .cse0) .cse1)) .cse0))))) is different from false [2022-11-19 06:43:42,853 WARN L859 $PredicateComparison]: unable to prove that (forall ((currentRoundingMode RoundingMode)) (not (let ((.cse1 ((_ to_fp 11 53) currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode .cse0) .cse1)) .cse0))))) is different from true [2022-11-19 06:43:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-19 06:43:42,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [373942127] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:43:42,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437143855] [2022-11-19 06:43:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:42,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:43:42,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:43:42,858 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:43:42,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:44:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:01,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:44:01,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:11,308 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:44:13,457 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ 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)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-19 06:44:15,727 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ 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)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-19 06:44:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-19 06:44:15,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:26,146 WARN L837 $PredicateComparison]: unable to prove that (or (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 (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-11-19 06:44:28,411 WARN L859 $PredicateComparison]: unable to prove that (or (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 (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-11-19 06:44:33,753 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 12 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:44:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-19 06:44:38,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437143855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:38,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:44:38,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 5] total 16 [2022-11-19 06:44:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410496756] [2022-11-19 06:44:38,298 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:38,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 06:44:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:44:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 06:44:38,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=43, Unknown=13, NotChecked=152, Total=240 [2022-11-19 06:44:38,300 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 16 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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) [2022-11-19 06:44:40,475 WARN L837 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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)))) (forall ((currentRoundingMode RoundingMode)) (not (let ((.cse3 ((_ to_fp 11 53) currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) .cse3)))) (fp.eq ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode .cse2) .cse3)) .cse2))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-19 06:44:42,921 WARN L859 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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)))) (forall ((currentRoundingMode RoundingMode)) (not (let ((.cse3 ((_ to_fp 11 53) currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) .cse3)))) (fp.eq ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode .cse2) .cse3)) .cse2))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-11-19 06:44:45,177 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.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|) .cse1)) |c_ULTIMATE.start_main_~main__x1~0#1|)))) (and (or .cse0 (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) .cse0 (= |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))) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2022-11-19 06:44:47,663 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~main__x~0#1| ((_ 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))) (= ((_ 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)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse1))) (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|) (exists ((currentRoundingMode RoundingMode)) (let ((.cse2 ((_ to_fp 11 53) currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse2)) |c_ULTIMATE.start_main_~main__x1~0#1|) (= ((_ to_fp 8 24) currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) .cse2)) |c_ULTIMATE.start_main_~main__x~0#1|)))) (not (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-19 06:44:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:47,796 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-11-19 06:44:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:44:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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 [2022-11-19 06:44:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:47,798 INFO L225 Difference]: With dead ends: 11 [2022-11-19 06:44:47,798 INFO L226 Difference]: Without dead ends: 8 [2022-11-19 06:44:47,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=38, Invalid=45, Unknown=17, NotChecked=242, Total=342 [2022-11-19 06:44:47,800 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:47,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-19 06:44:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-19 06:44:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-19 06:44:47,803 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) [2022-11-19 06:44:47,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-19 06:44:47,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-19 06:44:47,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:47,804 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-19 06:44:47,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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) [2022-11-19 06:44:47,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-19 06:44:47,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:44:47,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:47,805 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-19 06:44:47,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:48,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 06:44:48,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:44:48,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:44:48,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:44:48,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:48,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 2 times [2022-11-19 06:44:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:44:48,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795487292] [2022-11-19 06:44:48,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:44:48,408 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 [2022-11-19 06:44:48,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:44:48,411 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:44:48,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 06:44:49,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:44:49,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:49,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:44:49,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:54,648 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:44:56,926 WARN L859 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-11-19 06:45:07,335 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:45:09,500 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode (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__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-19 06:45:12,026 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode (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__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-19 06:45:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-19 06:45:12,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:45:22,456 WARN L837 $PredicateComparison]: unable to prove that (or (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 (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-11-19 06:45:24,701 WARN L859 $PredicateComparison]: unable to prove that (or (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 (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-11-19 06:45:30,305 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:45:36,487 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:45:39,050 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-11-19 06:45:41,553 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-11-19 06:45:47,325 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:45:52,945 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:45:55,469 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (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))) .cse1)))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (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 [2022-11-19 06:45:57,967 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (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))) .cse1)))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (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 [2022-11-19 06:45:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-19 06:45:57,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:45:57,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795487292] [2022-11-19 06:45:57,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795487292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:45:57,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [82955527] [2022-11-19 06:45:57,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:45:57,976 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:45:57,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:45:57,978 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:45:57,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 06:45:59,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:45:59,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:45:59,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:45:59,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:15,040 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:46:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-19 06:46:15,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:28,617 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:46:34,718 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:46:39,918 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:46:45,658 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:46:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-19 06:46:45,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [82955527] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:45,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933286424] [2022-11-19 06:46:45,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:46:45,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:45,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:46:45,663 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:46:45,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:47:35,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:47:35,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:47:36,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:47:36,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:46,166 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:47:48,308 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ 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)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-19 06:47:50,560 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ 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)) |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-19 06:48:00,997 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:48:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-19 06:48:01,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:48:10,843 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:48:16,450 WARN L837 $PredicateComparison]: unable to prove that (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) (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 (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-11-19 06:48:18,687 WARN L859 $PredicateComparison]: unable to prove that (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) (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 (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-11-19 06:48:24,316 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:48:30,562 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:48:36,864 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:48:39,406 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 |c_ULTIMATE.start_main_~main__x1~0#1|)))) is different from false [2022-11-19 06:48:42,000 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) .cse1)))) (or (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 |c_ULTIMATE.start_main_~main__x1~0#1|)))) is different from true [2022-11-19 06:48:47,239 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:48:53,035 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:48:58,821 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:49:01,367 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 ((_ 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)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1)))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 .cse2))))) is different from false [2022-11-19 06:49:03,880 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 ((_ 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)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1)))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)) (fp.eq .cse0 .cse2))))) is different from true [2022-11-19 06:49:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-19 06:49:03,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933286424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:03,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:49:03,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5, 6, 5, 6] total 14 [2022-11-19 06:49:03,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143296443] [2022-11-19 06:49:03,881 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:49:03,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 06:49:03,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:49:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 06:49:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=21, Unknown=17, NotChecked=144, Total=210 [2022-11-19 06:49:03,883 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-19 06:49:06,489 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 ((_ 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))) .cse4)))) (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse4)))) (let ((.cse0 (fp.eq .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse1 (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse4)) .cse2)))) (and (or .cse0 .cse1) (or .cse0 .cse1 (fp.eq .cse2 .cse3)) (= c_currentRoundingMode roundNearestTiesToEven)))))) is different from true [2022-11-19 06:49:08,940 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 ((_ 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)))) (let ((.cse1 (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse0)) .cse3))) (.cse2 (fp.eq .cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (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))) (or .cse1 .cse2) (or .cse1 .cse2 (fp.eq .cse3 |c_ULTIMATE.start_main_~main__x1~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from false [2022-11-19 06:49:11,508 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 ((_ 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)))) (let ((.cse1 (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse0)) .cse3))) (.cse2 (fp.eq .cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (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))) (or .cse1 .cse2) (or .cse1 .cse2 (fp.eq .cse3 |c_ULTIMATE.start_main_~main__x1~0#1|)) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2022-11-19 06:49:13,806 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (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|) .cse1)) |c_ULTIMATE.start_main_~main__x1~0#1|))) (.cse3 (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.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)))) (and (= .cse0 |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse1))) (or .cse2 .cse3) (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) .cse2 .cse3) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-11-19 06:49:17,350 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (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|) .cse1)) |c_ULTIMATE.start_main_~main__x1~0#1|))) (.cse3 (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.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)))) (and (= .cse0 |c_ULTIMATE.start_main_~main__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse1))) (or .cse2 .cse3) (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) .cse2 .cse3) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2022-11-19 06:49:19,535 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode (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__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))) (or (fp.eq |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-19 06:49:22,075 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= ((_ to_fp 8 24) c_currentRoundingMode (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__x~0#1|) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1|) .cse0))) (or (fp.eq |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-19 06:49:22,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:22,237 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-11-19 06:49:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:49:22,238 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 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 7 [2022-11-19 06:49:22,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:22,239 INFO L225 Difference]: With dead ends: 12 [2022-11-19 06:49:22,239 INFO L226 Difference]: Without dead ends: 9 [2022-11-19 06:49:22,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 59.4s TimeCoverageRelationStatistics Valid=36, Invalid=22, Unknown=24, NotChecked=260, Total=342 [2022-11-19 06:49:22,241 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:22,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-19 06:49:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-19 06:49:22,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-19 06:49:22,245 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) [2022-11-19 06:49:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 06:49:22,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-11-19 06:49:22,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:22,246 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 06:49:22,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-19 06:49:22,247 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 06:49:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:49:22,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:22,248 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-19 06:49:22,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:22,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:22,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:22,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:49:22,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash 145055718, now seen corresponding path program 3 times [2022-11-19 06:49:22,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:49:22,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314323104] [2022-11-19 06:49:22,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:49:22,859 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 [2022-11-19 06:49:22,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:49:22,860 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:49:22,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 (9)] Waiting until timeout for monitored process [2022-11-19 06:49:23,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:49:23,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:49:23,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:49:23,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:29,829 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:49:32,107 WARN L859 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-11-19 06:49:38,563 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 06:49:41,153 WARN L859 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 (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))) .cse0))) |c_ULTIMATE.start_main_~main__x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-11-19 06:49:48,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:49:48,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314323104] [2022-11-19 06:49:48,593 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 5893 column 7: canceled [2022-11-19 06:49:48,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [143415462] [2022-11-19 06:49:48,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:49:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:49:48,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:49:48,595 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:49:48,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 06:49:51,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:49:51,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:49:51,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:49:51,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:52,247 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-19 06:49:52,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2022-11-19 06:49:52,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544900665] [2022-11-19 06:49:52,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:49:52,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:52,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:52,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-11-19 06:49:52,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:52,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 06:51:41,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:51:41,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:51:42,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:51:42,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:51:42,038 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2022-11-19 06:51:42,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:42,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-19 06:51:42,038 ERROR L170 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2022-11-19 06:51:42,038 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-19 06:51:42,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:51:42,247 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forcibly destroying the process [2022-11-19 06:51:42,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:51:42,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:51:42,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:51:42,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b14158-78b1-4213-a758-a333799f8822/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:51:42,729 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-19 06:51:42,732 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:51:42,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:51:42 BoogieIcfgContainer [2022-11-19 06:51:42,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:51:42,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:51:42,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:51:42,743 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:51:42,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:18" (3/4) ... [2022-11-19 06:51:42,747 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:51:42,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:51:42,748 INFO L158 Benchmark]: Toolchain (without parser) took 569573.88ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.8MB in the beginning and 51.1MB in the end (delta: -5.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-11-19 06:51:42,748 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 65.0MB. Free memory was 47.2MB in the beginning and 47.2MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:51:42,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.31ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 48.9MB in the end (delta: -3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:51:42,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.43ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 47.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:51:42,750 INFO L158 Benchmark]: Boogie Preprocessor took 61.73ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 46.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:51:42,750 INFO L158 Benchmark]: RCFGBuilder took 4948.56ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 37.1MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:51:42,751 INFO L158 Benchmark]: TraceAbstraction took 564147.78ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 36.3MB in the beginning and 51.8MB in the end (delta: -15.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:51:42,751 INFO L158 Benchmark]: Witness Printer took 4.85ms. Allocated memory is still 79.7MB. Free memory was 51.8MB in the beginning and 51.1MB in the end (delta: 650.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:51:42,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 65.0MB. Free memory was 47.2MB in the beginning and 47.2MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.31ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 48.9MB in the end (delta: -3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.43ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 47.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.73ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 46.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4948.56ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 37.1MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 564147.78ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 36.3MB in the beginning and 51.8MB in the end (delta: -15.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 4.85ms. Allocated memory is still 79.7MB. Free memory was 51.8MB in the beginning and 51.1MB in the end (delta: 650.8kB). 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 call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 2.5; [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 2.5 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 2.5 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 2.5 [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 [L25] COND TRUE __VERIFIER_assert__cond == 0 [L27] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 564.1s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 31.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 74 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 25 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 102.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 73.8s SatisfiabilityAnalysisTime, 343.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 70 ConstructedInterpolants, 4 QuantifiedInterpolants, 1287 SizeOfPredicates, 34 NumberOfNonLiveVariables, 220 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 0/24 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN