./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_8.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_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/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_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/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_797996c4-8678-418a-9225-710382597ae9/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 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:13:42,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:13:42,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:13:42,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:13:42,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:13:42,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:13:42,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:13:42,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:13:42,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:13:42,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:13:42,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:13:42,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:13:42,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:13:42,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:13:42,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:13:42,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:13:42,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:13:42,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:13:42,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:13:42,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:13:42,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:13:42,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:13:42,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:13:42,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:13:42,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:13:42,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:13:42,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:13:42,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:13:42,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:13:42,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:13:42,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:13:42,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:13:42,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:13:42,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:13:42,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:13:42,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:13:42,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:13:42,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:13:42,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:13:42,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:13:42,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:13:42,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:13:42,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:13:42,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:13:42,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:13:42,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:13:42,823 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:13:42,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:13:42,824 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:13:42,824 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:13:42,824 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:13:42,825 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:13:42,826 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:13:42,826 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:13:42,826 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:13:42,827 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:13:42,827 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:13:42,827 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:13:42,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:13:42,828 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:13:42,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:13:42,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:13:42,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:13:42,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:13:42,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:13:42,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:13:42,830 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:13:42,830 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:13:42,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:13:42,831 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:13:42,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:13:42,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:13:42,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:13:42,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:13:42,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:13:42,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:13:42,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:13:42,835 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:13:42,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:13:42,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:13:42,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:13:42,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:13:42,836 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_797996c4-8678-418a-9225-710382597ae9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a [2021-11-12 23:13:43,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:13:43,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:13:43,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:13:43,154 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:13:43,155 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:13:43,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-11-12 23:13:43,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data/75e71cb7a/06985026b0374d938a8eef9f8217bd43/FLAGadf3abda2 [2021-11-12 23:13:43,645 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:13:43,646 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-11-12 23:13:43,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data/75e71cb7a/06985026b0374d938a8eef9f8217bd43/FLAGadf3abda2 [2021-11-12 23:13:44,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data/75e71cb7a/06985026b0374d938a8eef9f8217bd43 [2021-11-12 23:13:44,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:13:44,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:13:44,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:13:44,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:13:44,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:13:44,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b50a66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44, skipping insertion in model container [2021-11-12 23:13:44,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:13:44,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:13:44,218 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_797996c4-8678-418a-9225-710382597ae9/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2021-11-12 23:13:44,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:13:44,246 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:13:44,275 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_797996c4-8678-418a-9225-710382597ae9/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2021-11-12 23:13:44,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:13:44,290 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:13:44,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44 WrapperNode [2021-11-12 23:13:44,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:13:44,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:13:44,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:13:44,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:13:44,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:13:44,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:13:44,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:13:44,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:13:44,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:13:44,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:13:44,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:13:44,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:13:44,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (1/1) ... [2021-11-12 23:13:44,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:13:44,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:13:44,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:13:44,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:13:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:13:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:13:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:13:44,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:13:44,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:13:44,596 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:13:44,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:44 BoogieIcfgContainer [2021-11-12 23:13:44,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:13:44,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:13:44,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:13:44,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:13:44,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:13:44" (1/3) ... [2021-11-12 23:13:44,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f6672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:44, skipping insertion in model container [2021-11-12 23:13:44,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:44" (2/3) ... [2021-11-12 23:13:44,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f6672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:44, skipping insertion in model container [2021-11-12 23:13:44,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:44" (3/3) ... [2021-11-12 23:13:44,617 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-11-12 23:13:44,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:13:44,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:13:44,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:13:44,680 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 23:13:44,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:13:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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 23:13:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:13:44,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:44,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:13:44,701 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:44,707 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-11-12 23:13:44,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:13:44,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749321168] [2021-11-12 23:13:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:44,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:13:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:13:44,821 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:13:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:13:44,855 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:13:44,857 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:13:44,858 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:13:44,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:13:44,865 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 23:13:44,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:13:44,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:13:44 BoogieIcfgContainer [2021-11-12 23:13:44,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:13:44,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:13:44,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:13:44,888 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:13:44,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:44" (3/4) ... [2021-11-12 23:13:44,892 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:13:44,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:13:44,893 INFO L158 Benchmark]: Toolchain (without parser) took 850.50ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 60.1MB in the end (delta: -6.8MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-11-12 23:13:44,894 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 18.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:13:44,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.93ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.1MB in the beginning and 85.6MB in the end (delta: -32.5MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-11-12 23:13:44,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.24ms. Allocated memory is still 109.1MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:13:44,896 INFO L158 Benchmark]: Boogie Preprocessor took 17.40ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 83.4MB in the end (delta: 657.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:13:44,897 INFO L158 Benchmark]: RCFGBuilder took 253.85ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 73.9MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:13:44,898 INFO L158 Benchmark]: TraceAbstraction took 286.56ms. Allocated memory is still 109.1MB. Free memory was 73.3MB in the beginning and 60.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:13:44,898 INFO L158 Benchmark]: Witness Printer took 4.49ms. Allocated memory is still 109.1MB. Free memory was 60.4MB in the beginning and 60.1MB in the end (delta: 296.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:13:44,902 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 18.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.93ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.1MB in the beginning and 85.6MB in the end (delta: -32.5MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.24ms. Allocated memory is still 109.1MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.40ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 83.4MB in the end (delta: 657.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 253.85ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 73.9MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 286.56ms. Allocated memory is still 109.1MB. Free memory was 73.3MB in the beginning and 60.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.49ms. Allocated memory is still 109.1MB. Free memory was 60.4MB in the beginning and 60.1MB in the end (delta: 296.0kB). 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: 38]: 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 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L37] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=49, x=49] [L38] reach_error() VAL [IN=49, x=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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 23:13:45,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/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_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/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_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/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_797996c4-8678-418a-9225-710382597ae9/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 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:13:47,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:13:47,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:13:47,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:13:47,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:13:47,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:13:47,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:13:47,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:13:47,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:13:47,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:13:47,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:13:47,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:13:47,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:13:47,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:13:47,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:13:47,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:13:47,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:13:47,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:13:47,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:13:47,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:13:47,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:13:47,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:13:47,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:13:47,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:13:47,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:13:47,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:13:47,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:13:47,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:13:47,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:13:47,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:13:47,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:13:47,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:13:47,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:13:47,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:13:47,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:13:47,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:13:47,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:13:47,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:13:47,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:13:47,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:13:47,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:13:47,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:13:47,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:13:47,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:13:47,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:13:47,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:13:47,383 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:13:47,383 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:13:47,384 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:13:47,384 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:13:47,384 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:13:47,384 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:13:47,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:13:47,385 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:13:47,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:13:47,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:13:47,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:13:47,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:13:47,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:13:47,387 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:13:47,387 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:13:47,387 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:13:47,387 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:13:47,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:13:47,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:13:47,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:13:47,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:13:47,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:13:47,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:13:47,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:13:47,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:13:47,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:13:47,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:13:47,390 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:13:47,390 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:13:47,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:13:47,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:13:47,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:13:47,391 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_797996c4-8678-418a-9225-710382597ae9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a [2021-11-12 23:13:47,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:13:47,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:13:47,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:13:47,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:13:47,821 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:13:47,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-11-12 23:13:47,911 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data/34ee21046/4c18b09b0f81439b857b189e1ee64ef5/FLAG788b5bef2 [2021-11-12 23:13:48,463 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:13:48,464 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-11-12 23:13:48,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data/34ee21046/4c18b09b0f81439b857b189e1ee64ef5/FLAG788b5bef2 [2021-11-12 23:13:48,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/data/34ee21046/4c18b09b0f81439b857b189e1ee64ef5 [2021-11-12 23:13:48,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:13:48,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:13:48,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:13:48,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:13:48,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:13:48,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:13:48" (1/1) ... [2021-11-12 23:13:48,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432b9641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:48, skipping insertion in model container [2021-11-12 23:13:48,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:13:48" (1/1) ... [2021-11-12 23:13:48,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:13:48,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:13:49,075 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_797996c4-8678-418a-9225-710382597ae9/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2021-11-12 23:13:49,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:13:49,100 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:13:49,122 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_797996c4-8678-418a-9225-710382597ae9/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2021-11-12 23:13:49,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:13:49,180 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:13:49,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49 WrapperNode [2021-11-12 23:13:49,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:13:49,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:13:49,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:13:49,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:13:49,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:13:49,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:13:49,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:13:49,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:13:49,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:13:49,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:13:49,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:13:49,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:13:49,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (1/1) ... [2021-11-12 23:13:49,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:13:49,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:13:49,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:13:49,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:13:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:13:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:13:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:13:49,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:13:51,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:13:51,604 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:13:51,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:51 BoogieIcfgContainer [2021-11-12 23:13:51,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:13:51,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:13:51,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:13:51,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:13:51,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:13:48" (1/3) ... [2021-11-12 23:13:51,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa27f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:51, skipping insertion in model container [2021-11-12 23:13:51,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:13:49" (2/3) ... [2021-11-12 23:13:51,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa27f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:51, skipping insertion in model container [2021-11-12 23:13:51,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:51" (3/3) ... [2021-11-12 23:13:51,615 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-11-12 23:13:51,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:13:51,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:13:51,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:13:51,674 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 23:13:51,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:13:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 23:13:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:13:51,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:51,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:13:51,705 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:51,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:51,711 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-12 23:13:51,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:51,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082004994] [2021-11-12 23:13:51,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:51,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:51,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:51,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:51,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:13:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:52,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:13:52,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:52,281 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 23:13:52,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:52,306 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 23:13:52,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:52,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082004994] [2021-11-12 23:13:52,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082004994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:52,308 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:52,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:13:52,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457441821] [2021-11-12 23:13:52,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:52,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:13:52,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:52,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:13:52,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:13:52,342 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 23:13:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:52,354 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-12 23:13:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:13:52,356 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 23:13:52,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:52,363 INFO L225 Difference]: With dead ends: 19 [2021-11-12 23:13:52,363 INFO L226 Difference]: Without dead ends: 7 [2021-11-12 23:13:52,366 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 23:13:52,370 INFO L933 BasicCegarLoop]: 10 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, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:52,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.38ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:13:52,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-12 23:13:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-12 23:13:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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 23:13:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-12 23:13:52,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-12 23:13:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:52,400 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-12 23:13:52,400 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 23:13:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-12 23:13:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:13:52,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:52,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:13:52,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:13:52,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:52,612 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:52,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:52,614 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-12 23:13:52,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:52,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787672797] [2021-11-12 23:13:52,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:52,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:52,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:52,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:52,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:14:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:25,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:14:25,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:40,684 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-12 23:15:30,898 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main_~IN~0#1| .cse1)))) is different from false [2021-11-12 23:15:32,952 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main_~IN~0#1| .cse1)))) is different from true [2021-11-12 23:15:32,952 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 23:15:32,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:43,574 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) is different from false [2021-11-12 23:15:45,648 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) is different from true [2021-11-12 23:16:00,430 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))) is different from false [2021-11-12 23:16:02,503 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))) is different from true [2021-11-12 23:16:46,911 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main_~IN~0#1_4| .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24)))) (not (fp.geq |v_ULTIMATE.start_main_~IN~0#1_4| (_ +zero 8 24)))))) is different from false [2021-11-12 23:16:48,987 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main_~IN~0#1_4| .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24)))) (not (fp.geq |v_ULTIMATE.start_main_~IN~0#1_4| (_ +zero 8 24)))))) is different from true [2021-11-12 23:16:48,988 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 23:16:48,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:16:48,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787672797] [2021-11-12 23:16:48,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787672797] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:16:48,989 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:16:48,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-12 23:16:48,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462805213] [2021-11-12 23:16:48,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:16:48,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:16:48,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:16:48,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:16:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2021-11-12 23:16:48,993 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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 23:16:51,076 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main_~IN~0#1_4| .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24)))) (not (fp.geq |v_ULTIMATE.start_main_~IN~0#1_4| (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-12 23:16:53,168 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main_~IN~0#1_4| .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|) |v_ULTIMATE.start_main_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24)))) (not (fp.geq |v_ULTIMATE.start_main_~IN~0#1_4| (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-12 23:16:55,238 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (let ((.cse2 (fp.geq |c_ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24))) (.cse1 (fp.lt |c_ULTIMATE.start_main_~IN~0#1| .cse3))) (or (and .cse0 (or (not .cse1) (not .cse2))) (and .cse2 .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))))) (or .cse0 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)))) (and (fp.geq .cse4 (_ +zero 8 24)) (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-12 23:16:57,318 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (let ((.cse2 (fp.geq |c_ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24))) (.cse1 (fp.lt |c_ULTIMATE.start_main_~IN~0#1| .cse3))) (or (and .cse0 (or (not .cse1) (not .cse2))) (and .cse2 .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))))) (or .cse0 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)))) (and (fp.geq .cse4 (_ +zero 8 24)) (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-12 23:16:59,388 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)))) (and (fp.geq |c_ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)) (fp.lt |c_ULTIMATE.start_main_~IN~0#1| .cse0) (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-11-12 23:17:01,467 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|) |c_ULTIMATE.start_main_~IN~0#1|)))) (and (fp.geq |c_ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)) (fp.lt |c_ULTIMATE.start_main_~IN~0#1| .cse0) (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-12 23:17:03,556 WARN L838 $PredicateComparison]: unable to prove that (and (fp.lt |c_ULTIMATE.start_main_~result~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (exists ((|ULTIMATE.start_main_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)))))) (fp.geq |c_ULTIMATE.start_main_~result~0#1| (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-12 23:17:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:03,565 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-11-12 23:17:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:17:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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 23:17:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:03,567 INFO L225 Difference]: With dead ends: 7 [2021-11-12 23:17:03,567 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 23:17:03,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=29, Invalid=21, Unknown=16, NotChecked=144, Total=210 [2021-11-12 23:17:03,570 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 26.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:03,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 10 Unknown, 0 Unchecked, 0.18ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 7 Unchecked, 26.90ms Time] [2021-11-12 23:17:03,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 23:17:03,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 23:17:03,572 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 23:17:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 23:17:03,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-11-12 23:17:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:03,573 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 23:17:03,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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 23:17:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 23:17:03,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 23:17:03,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:17:03,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:03,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:03,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 23:17:03,821 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 23:17:03,821 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 23:17:03,821 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 23:17:03,822 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 23:17:03,822 INFO L858 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-11-12 23:17:03,822 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2021-11-12 23:17:03,822 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 25) no Hoare annotation was computed. [2021-11-12 23:17:03,823 INFO L861 garLoopResultBuilder]: At program point L40(lines 27 41) the Hoare annotation is: true [2021-11-12 23:17:03,823 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-11-12 23:17:03,823 INFO L858 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-11-12 23:17:03,823 INFO L858 garLoopResultBuilder]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2021-11-12 23:17:03,827 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:17:03,828 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:17:03,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:17:03 BoogieIcfgContainer [2021-11-12 23:17:03,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:17:03,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:17:03,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:17:03,837 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:17:03,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:51" (3/4) ... [2021-11-12 23:17:03,841 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 23:17:03,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-12 23:17:03,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-12 23:17:03,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 23:17:03,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 23:17:03,885 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:17:03,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:17:03,888 INFO L158 Benchmark]: Toolchain (without parser) took 195048.76ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 36.7MB in the beginning and 37.6MB in the end (delta: -881.5kB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2021-11-12 23:17:03,889 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.6MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:17:03,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.31ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 41.9MB in the end (delta: -5.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:17:03,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.38ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:17:03,890 INFO L158 Benchmark]: Boogie Preprocessor took 24.37ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 39.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:17:03,891 INFO L158 Benchmark]: RCFGBuilder took 2342.24ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 30.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:17:03,891 INFO L158 Benchmark]: TraceAbstraction took 192227.51ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 29.9MB in the beginning and 39.8MB in the end (delta: -9.9MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-11-12 23:17:03,894 INFO L158 Benchmark]: Witness Printer took 50.88ms. Allocated memory is still 81.8MB. Free memory was 39.8MB in the beginning and 37.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:17:03,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.6MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.31ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 41.9MB in the end (delta: -5.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.38ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.37ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 39.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2342.24ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 30.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 192227.51ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 29.9MB in the beginning and 39.8MB in the end (delta: -9.9MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Witness Printer took 50.88ms. Allocated memory is still 81.8MB. Free memory was 39.8MB in the beginning and 37.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 38]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 192.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 26.90ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 25.44ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 3 mSolverCounterSat, 0.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 33.3s SatisfiabilityAnalysisTime, 143.6s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 3 QuantifiedInterpolants, 616 SizeOfPredicates, 6 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-12 23:17:04,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797996c4-8678-418a-9225-710382597ae9/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