./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF --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 ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:56:56,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:56:56,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:56:56,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:56:56,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:56:56,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:56:56,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:56:56,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:56:56,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:56:56,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:56:56,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:56:56,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:56:56,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:56:56,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:56:56,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:56:56,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:56:56,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:56:56,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:56:56,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:56:56,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:56:56,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:56:56,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:56:56,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:56:56,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:56:56,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:56:56,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:56:56,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:56:56,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:56:56,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:56:56,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:56:56,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:56:56,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:56:56,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:56:56,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:56:56,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:56:56,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:56:56,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:56:56,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:56:56,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:56:56,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:56:56,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:56:56,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:56:56,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:56:56,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:56:56,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:56:56,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:56:56,580 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:56:56,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:56:56,581 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:56:56,581 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:56:56,581 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:56:56,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:56:56,582 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:56:56,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:56:56,588 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:56:56,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:56:56,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:56:56,589 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:56:56,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:56:56,590 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:56:56,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:56:56,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:56:56,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:56:56,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:56:56,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:56:56,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:56:56,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:56:56,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:56:56,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:56:56,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:56:56,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:56:56,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:56:56,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:56:56,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:56:56,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:56:56,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:56:56,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:56:56,594 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:56:56,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:56:56,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:56:56,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:56:56,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:56:56,598 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2021-11-12 22:56:56,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:56:56,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:56:56,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:56:56,884 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:56:56,885 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:56:56,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-11-12 22:56:56,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data/bf82d92c8/ce4137e67bc2416baf104d8f93ff582e/FLAG834065e6a [2021-11-12 22:56:57,449 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:56:57,450 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-11-12 22:56:57,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data/bf82d92c8/ce4137e67bc2416baf104d8f93ff582e/FLAG834065e6a [2021-11-12 22:56:57,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data/bf82d92c8/ce4137e67bc2416baf104d8f93ff582e [2021-11-12 22:56:57,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:56:57,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:56:57,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:57,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:56:57,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:56:57,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:57" (1/1) ... [2021-11-12 22:56:57,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246e93fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:57, skipping insertion in model container [2021-11-12 22:56:57,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:57" (1/1) ... [2021-11-12 22:56:57,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:56:57,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:56:58,023 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-11-12 22:56:58,036 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-11-12 22:56:58,043 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-11-12 22:56:58,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:56:58,053 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:56:58,068 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-11-12 22:56:58,074 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-11-12 22:56:58,079 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-11-12 22:56:58,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:56:58,094 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:56:58,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58 WrapperNode [2021-11-12 22:56:58,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:58,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:56:58,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:56:58,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:56:58,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:56:58,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:56:58,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:56:58,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:56:58,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:56:58,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:56:58,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:56:58,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:56:58,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (1/1) ... [2021-11-12 22:56:58,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:56:58,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:56:58,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:56:58,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:56:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:56:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:56:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:56:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:56:58,422 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:56:58,422 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:56:58,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:56:58 BoogieIcfgContainer [2021-11-12 22:56:58,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:56:58,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:56:58,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:56:58,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:56:58,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:56:57" (1/3) ... [2021-11-12 22:56:58,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e941d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:56:58, skipping insertion in model container [2021-11-12 22:56:58,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:58" (2/3) ... [2021-11-12 22:56:58,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e941d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:56:58, skipping insertion in model container [2021-11-12 22:56:58,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:56:58" (3/3) ... [2021-11-12 22:56:58,434 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2021-11-12 22:56:58,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:56:58,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 22:56:58,484 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:56:58,497 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:56:58,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 22:56:58,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-11-12 22:56:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:56:58,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:58,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:56:58,515 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:56:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:58,521 INFO L85 PathProgramCache]: Analyzing trace with hash 89758, now seen corresponding path program 1 times [2021-11-12 22:56:58,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:58,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724720567] [2021-11-12 22:56:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:58,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:56:58,615 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:56:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:56:58,651 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:56:58,653 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:56:58,655 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-12 22:56:58,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-12 22:56:58,657 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-12 22:56:58,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:56:58,662 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:56:58,664 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:56:58,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:56:58 BoogieIcfgContainer [2021-11-12 22:56:58,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:56:58,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:56:58,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:56:58,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:56:58,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:56:58" (3/4) ... [2021-11-12 22:56:58,688 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:56:58,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:56:58,689 INFO L158 Benchmark]: Toolchain (without parser) took 891.71ms. Allocated memory is still 94.4MB. Free memory was 53.3MB in the beginning and 41.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-11-12 22:56:58,690 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 70.0MB in the end (delta: 55.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:56:58,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.84ms. Allocated memory is still 94.4MB. Free memory was 74.1MB in the beginning and 68.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:56:58,692 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.43ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 67.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:56:58,692 INFO L158 Benchmark]: Boogie Preprocessor took 21.47ms. Allocated memory is still 94.4MB. Free memory was 67.0MB in the beginning and 66.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:56:58,693 INFO L158 Benchmark]: RCFGBuilder took 274.20ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 55.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:56:58,694 INFO L158 Benchmark]: TraceAbstraction took 256.28ms. Allocated memory is still 94.4MB. Free memory was 54.9MB in the beginning and 42.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:56:58,695 INFO L158 Benchmark]: Witness Printer took 4.46ms. Allocated memory is still 94.4MB. Free memory was 42.1MB in the beginning and 41.8MB in the end (delta: 243.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:56:58,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 70.0MB in the end (delta: 55.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.84ms. Allocated memory is still 94.4MB. Free memory was 74.1MB in the beginning and 68.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.43ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 67.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.47ms. Allocated memory is still 94.4MB. Free memory was 67.0MB in the beginning and 66.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 274.20ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 55.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 256.28ms. Allocated memory is still 94.4MB. Free memory was 54.9MB in the beginning and 42.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.46ms. Allocated memory is still 94.4MB. Free memory was 42.1MB in the beginning and 41.8MB in the end (delta: 243.2kB). 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: 21]: 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 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L48] float f=__VERIFIER_nondet_float(); [L49] CALL bug(f) [L17] COND FALSE !(!(min == 0x1.fffffep-105f)) [L18] float modifier = (0x1.0p-23 * (1<<1)); [L19] float ulpdiff = min * modifier; VAL [\old(min)=49, min=49] [L21] COND TRUE !(ulpdiff == 0x1p-126f) VAL [\old(min)=49, min=49] [L21] reach_error() VAL [\old(min)=49, min=49] - UnprovableResult [Line: 32]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 3 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 3 NumberOfCodeBlocks, 3 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 [2021-11-12 22:56:58,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF --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 ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:57:01,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:57:01,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:57:01,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:57:01,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:57:01,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:57:01,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:57:01,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:57:01,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:57:01,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:57:01,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:57:01,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:57:01,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:57:01,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:57:01,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:57:01,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:57:01,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:57:01,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:57:01,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:57:01,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:57:01,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:57:01,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:57:01,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:57:01,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:57:01,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:57:01,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:57:01,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:57:01,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:57:01,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:57:01,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:57:01,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:57:01,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:57:01,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:57:01,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:57:01,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:57:01,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:57:01,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:57:01,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:57:01,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:57:01,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:57:01,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:57:01,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:57:01,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:57:01,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:57:01,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:57:01,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:57:01,264 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:57:01,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:57:01,265 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:57:01,265 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:57:01,266 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:57:01,266 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:57:01,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:57:01,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:57:01,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:57:01,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:57:01,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:57:01,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:57:01,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:57:01,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:57:01,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:57:01,270 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:57:01,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:57:01,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:57:01,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:57:01,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:57:01,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:57:01,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:57:01,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:57:01,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:57:01,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:57:01,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:57:01,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:57:01,273 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:57:01,274 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:57:01,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:57:01,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:57:01,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:57:01,275 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_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2021-11-12 22:57:01,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:57:01,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:57:01,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:57:01,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:57:01,705 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:57:01,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-11-12 22:57:01,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data/e6835b1db/690d7361e69345f699e9d931393beae8/FLAG3b70155db [2021-11-12 22:57:02,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:57:02,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-11-12 22:57:02,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data/e6835b1db/690d7361e69345f699e9d931393beae8/FLAG3b70155db [2021-11-12 22:57:02,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/data/e6835b1db/690d7361e69345f699e9d931393beae8 [2021-11-12 22:57:02,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:57:02,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:57:02,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:57:02,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:57:02,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:57:02,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:57:02" (1/1) ... [2021-11-12 22:57:02,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d100c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:02, skipping insertion in model container [2021-11-12 22:57:02,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:57:02" (1/1) ... [2021-11-12 22:57:02,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:57:02,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:57:02,895 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-11-12 22:57:02,906 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-11-12 22:57:02,912 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-11-12 22:57:02,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:57:02,967 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:57:02,996 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-11-12 22:57:03,001 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-11-12 22:57:03,004 WARN L228 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_de51f726-e571-47ca-99df-9cb4696ac335/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-11-12 22:57:03,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:57:03,020 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:57:03,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03 WrapperNode [2021-11-12 22:57:03,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:57:03,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:57:03,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:57:03,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:57:03,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:57:03,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:57:03,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:57:03,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:57:03,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:57:03,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:57:03,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:57:03,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:57:03,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (1/1) ... [2021-11-12 22:57:03,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:57:03,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:57:03,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:57:03,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:57:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:57:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:57:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:57:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:57:05,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:57:05,830 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:57:05,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:05 BoogieIcfgContainer [2021-11-12 22:57:05,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:57:05,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:57:05,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:57:05,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:57:05,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:57:02" (1/3) ... [2021-11-12 22:57:05,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b8c7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:05, skipping insertion in model container [2021-11-12 22:57:05,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:03" (2/3) ... [2021-11-12 22:57:05,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b8c7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:05, skipping insertion in model container [2021-11-12 22:57:05,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:05" (3/3) ... [2021-11-12 22:57:05,841 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2021-11-12 22:57:05,847 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:57:05,847 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 22:57:05,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:57:05,902 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:57:05,902 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 22:57:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 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) [2021-11-12 22:57:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:57:05,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:05,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:57:05,923 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-12 22:57:05,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:05,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820774674] [2021-11-12 22:57:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:05,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:05,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:05,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:05,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:57:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:06,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:57:06,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:06,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:06,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:06,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820774674] [2021-11-12 22:57:06,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820774674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:06,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:06,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:57:06,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490665146] [2021-11-12 22:57:06,180 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:06,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:57:06,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:57:06,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:57:06,220 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:06,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:06,234 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-11-12 22:57:06,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:57:06,236 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-12 22:57:06,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:06,244 INFO L225 Difference]: With dead ends: 43 [2021-11-12 22:57:06,244 INFO L226 Difference]: Without dead ends: 19 [2021-11-12 22:57:06,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:57:06,251 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:06,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.60ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:57:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-12 22:57:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-12 22:57:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-11-12 22:57:06,285 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 6 [2021-11-12 22:57:06,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:06,285 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-11-12 22:57:06,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-11-12 22:57:06,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:57:06,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:06,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:57:06,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:06,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:06,503 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:06,504 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-12 22:57:06,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:06,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136150125] [2021-11-12 22:57:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:06,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:06,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:06,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:06,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:57:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:06,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:57:06,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:07,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:08,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:08,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136150125] [2021-11-12 22:57:08,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136150125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:08,725 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:08,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:57:08,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606779394] [2021-11-12 22:57:08,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:08,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:57:08,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:57:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:57:08,728 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:11,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:57:13,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:57:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:14,020 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-11-12 22:57:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:57:14,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-12 22:57:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:14,024 INFO L225 Difference]: With dead ends: 19 [2021-11-12 22:57:14,024 INFO L226 Difference]: Without dead ends: 17 [2021-11-12 22:57:14,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:57:14,028 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5056.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 5136.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:14,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 18 Unchecked, 5136.15ms Time] [2021-11-12 22:57:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-12 22:57:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-12 22:57:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 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) [2021-11-12 22:57:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-11-12 22:57:14,032 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 6 [2021-11-12 22:57:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:14,033 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-11-12 22:57:14,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-11-12 22:57:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 22:57:14,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:14,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:14,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:14,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:14,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:14,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1928169781, now seen corresponding path program 1 times [2021-11-12 22:57:14,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:14,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828374195] [2021-11-12 22:57:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:14,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:14,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:14,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:14,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:57:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:14,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:57:14,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:25,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:29,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:29,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828374195] [2021-11-12 22:58:29,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828374195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:29,764 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:29,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:58:29,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731390325] [2021-11-12 22:58:29,764 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:29,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:58:29,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:58:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=30, Unknown=6, NotChecked=0, Total=56 [2021-11-12 22:58:29,767 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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) [2021-11-12 22:58:31,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:33,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:34,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:37,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:40,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:47,083 WARN L227 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 22:58:48,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:50,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:51,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:51,531 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-11-12 22:58:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:58:51,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 10 [2021-11-12 22:58:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:51,563 INFO L225 Difference]: With dead ends: 17 [2021-11-12 22:58:51,563 INFO L226 Difference]: Without dead ends: 15 [2021-11-12 22:58:51,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=28, Invalid=38, Unknown=6, NotChecked=0, Total=72 [2021-11-12 22:58:51,565 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14909.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 15180.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:51,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 38 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 4 Unknown, 4 Unchecked, 15180.38ms Time] [2021-11-12 22:58:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-12 22:58:51,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-12 22:58:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-11-12 22:58:51,569 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 10 [2021-11-12 22:58:51,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:51,570 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-11-12 22:58:51,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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) [2021-11-12 22:58:51,570 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-11-12 22:58:51,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 22:58:51,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:51,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:51,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:51,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:51,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:58:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1162826544, now seen corresponding path program 1 times [2021-11-12 22:58:51,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:51,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963228464] [2021-11-12 22:58:51,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:51,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:51,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:51,774 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:51,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:58:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:52,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:58:52,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:52,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:58,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:58,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963228464] [2021-11-12 22:58:58,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963228464] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:58,174 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:58,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:58:58,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446008806] [2021-11-12 22:58:58,174 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:58,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:58:58,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:58,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:58:58,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:58:58,176 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-11-12 22:59:00,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:59:02,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:59:03,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:03,314 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-11-12 22:59:03,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:59:03,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-12 22:59:03,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:03,315 INFO L225 Difference]: With dead ends: 15 [2021-11-12 22:59:03,315 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:59:03,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:59:03,316 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4711.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 4855.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:03,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 42 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 1 Unknown, 9 Unchecked, 4855.58ms Time] [2021-11-12 22:59:03,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:59:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:59:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-12 22:59:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:59:03,319 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-11-12 22:59:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:03,319 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:59:03,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-11-12 22:59:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:59:03,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:59:03,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-12 22:59:03,334 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-12 22:59:03,334 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-12 22:59:03,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 22:59:03,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:03,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:59:03,562 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-11-12 22:59:03,562 INFO L858 garLoopResultBuilder]: For program point L27-2(line 27) no Hoare annotation was computed. [2021-11-12 22:59:03,562 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2021-11-12 22:59:03,562 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-11-12 22:59:03,563 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 22:59:03,563 INFO L858 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2021-11-12 22:59:03,563 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:59:03,563 INFO L854 garLoopResultBuilder]: At program point L32-3(lines 26 35) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-11-12 22:59:03,563 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 22:59:03,563 INFO L861 garLoopResultBuilder]: At program point L57(lines 47 58) the Hoare annotation is: true [2021-11-12 22:59:03,563 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-11-12 22:59:03,564 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:59:03,564 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-11-12 22:59:03,564 INFO L858 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-11-12 22:59:03,564 INFO L854 garLoopResultBuilder]: At program point L21-3(lines 16 24) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-11-12 22:59:03,564 INFO L858 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-11-12 22:59:03,564 INFO L858 garLoopResultBuilder]: For program point L17-2(line 17) no Hoare annotation was computed. [2021-11-12 22:59:03,564 INFO L858 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-11-12 22:59:03,564 INFO L858 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2021-11-12 22:59:03,564 INFO L861 garLoopResultBuilder]: At program point L42-3(lines 37 45) the Hoare annotation is: true [2021-11-12 22:59:03,564 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-11-12 22:59:03,564 INFO L858 garLoopResultBuilder]: For program point L38-2(line 38) no Hoare annotation was computed. [2021-11-12 22:59:03,565 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-11-12 22:59:03,568 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-12 22:59:03,569 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:59:03,578 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-12 22:59:03,581 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-12 22:59:03,582 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-12 22:59:03,582 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-12 22:59:03,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:59:03 BoogieIcfgContainer [2021-11-12 22:59:03,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:59:03,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:59:03,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:59:03,584 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:59:03,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:05" (3/4) ... [2021-11-12 22:59:03,588 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:59:03,598 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-12 22:59:03,598 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-12 22:59:03,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 22:59:03,599 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:59:03,630 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:59:03,631 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:59:03,631 INFO L158 Benchmark]: Toolchain (without parser) took 120920.07ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 42.6MB in the beginning and 60.3MB in the end (delta: -17.7MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-11-12 22:59:03,632 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 62.9MB. Free memory is still 44.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:59:03,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.94ms. Allocated memory is still 62.9MB. Free memory was 42.4MB in the beginning and 44.2MB in the end (delta: -1.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:59:03,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.67ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 42.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:59:03,633 INFO L158 Benchmark]: Boogie Preprocessor took 26.57ms. Allocated memory is still 62.9MB. Free memory was 42.6MB in the beginning and 41.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:59:03,634 INFO L158 Benchmark]: RCFGBuilder took 2746.75ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 31.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:59:03,634 INFO L158 Benchmark]: TraceAbstraction took 117749.49ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 31.2MB in the beginning and 63.0MB in the end (delta: -31.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:59:03,634 INFO L158 Benchmark]: Witness Printer took 46.89ms. Allocated memory is still 83.9MB. Free memory was 63.0MB in the beginning and 60.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:59:03,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 62.9MB. Free memory is still 44.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.94ms. Allocated memory is still 62.9MB. Free memory was 42.4MB in the beginning and 44.2MB in the end (delta: -1.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.67ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 42.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.57ms. Allocated memory is still 62.9MB. Free memory was 42.6MB in the beginning and 41.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2746.75ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 31.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 117749.49ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 31.2MB in the beginning and 63.0MB in the end (delta: -31.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 46.89ms. Allocated memory is still 83.9MB. Free memory was 63.0MB in the beginning and 60.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 32]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 42]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 117.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 25172.11ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 24676.82ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 31 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 47 mSDtfsCounter, 81 mSolverCounterSat, 3.79ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 51.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 83.6s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 21 QuantifiedInterpolants, 619 SizeOfPredicates, 15 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant [2021-11-12 22:59:03,646 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-12 22:59:03,647 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 26]: Loop Invariant [2021-11-12 22:59:03,647 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-12 22:59:03,647 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-12 22:59:03,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51f726-e571-47ca-99df-9cb4696ac335/bin/utaipan-vmNK8stdcF/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 Writing output log to file Ultimate.log Result: TRUE