./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8 --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 fd48c40c85c60cda828d5ba2f8e19cb59d8c4d05a17351e2a1fd8bd0f9353e6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:01:29,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:01:29,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:01:29,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:01:29,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:01:29,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:01:29,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:01:29,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:01:29,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:01:29,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:01:29,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:01:29,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:01:29,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:01:29,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:01:29,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:01:29,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:01:29,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:01:29,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:01:29,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:01:29,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:01:29,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:01:29,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:01:29,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:01:29,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:01:29,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:01:29,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:01:29,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:01:29,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:01:29,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:01:29,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:01:29,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:01:29,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:01:29,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:01:29,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:01:29,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:01:29,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:01:29,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:01:29,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:01:29,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:01:29,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:01:29,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:01:29,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:01:29,831 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:01:29,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:01:29,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:01:29,833 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:01:29,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:01:29,833 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:01:29,834 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:01:29,834 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:01:29,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:01:29,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:01:29,835 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:01:29,835 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:01:29,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:01:29,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:01:29,836 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:01:29,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:01:29,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:01:29,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:01:29,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:01:29,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:01:29,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:01:29,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:01:29,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:01:29,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:01:29,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:01:29,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:01:29,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:01:29,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:01:29,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:01:29,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:01:29,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:01:29,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:01:29,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:01:29,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:01:29,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:01:29,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:01:29,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:01:29,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:01:29,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:01:29,843 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_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd48c40c85c60cda828d5ba2f8e19cb59d8c4d05a17351e2a1fd8bd0f9353e6c [2021-11-07 01:01:30,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:01:30,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:01:30,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:01:30,161 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:01:30,162 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:01:30,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/square_6.i [2021-11-07 01:01:30,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data/bb957ee96/77c2846f7b4c4af6b7eb90baef99c11d/FLAGc67898545 [2021-11-07 01:01:30,718 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:01:30,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/sv-benchmarks/c/floats-cdfpl/square_6.i [2021-11-07 01:01:30,726 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data/bb957ee96/77c2846f7b4c4af6b7eb90baef99c11d/FLAGc67898545 [2021-11-07 01:01:31,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data/bb957ee96/77c2846f7b4c4af6b7eb90baef99c11d [2021-11-07 01:01:31,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:01:31,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:01:31,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:01:31,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:01:31,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:01:31,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b166e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31, skipping insertion in model container [2021-11-07 01:01:31,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:01:31,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:01:31,316 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_3dda519c-7046-4809-8cf3-bcfd6191bcee/sv-benchmarks/c/floats-cdfpl/square_6.i[1129,1142] [2021-11-07 01:01:31,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:01:31,328 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:01:31,341 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_3dda519c-7046-4809-8cf3-bcfd6191bcee/sv-benchmarks/c/floats-cdfpl/square_6.i[1129,1142] [2021-11-07 01:01:31,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:01:31,355 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:01:31,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31 WrapperNode [2021-11-07 01:01:31,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:01:31,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:01:31,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:01:31,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:01:31,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:01:31,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:01:31,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:01:31,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:01:31,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:01:31,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:01:31,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:01:31,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:01:31,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (1/1) ... [2021-11-07 01:01:31,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:01:31,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:31,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:01:31,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:01:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:01:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:01:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:01:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:01:31,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:01:31,693 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 01:01:31,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:01:31 BoogieIcfgContainer [2021-11-07 01:01:31,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:01:31,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:01:31,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:01:31,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:01:31,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:01:31" (1/3) ... [2021-11-07 01:01:31,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2283134e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:01:31, skipping insertion in model container [2021-11-07 01:01:31,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:31" (2/3) ... [2021-11-07 01:01:31,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2283134e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:01:31, skipping insertion in model container [2021-11-07 01:01:31,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:01:31" (3/3) ... [2021-11-07 01:01:31,704 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6.i [2021-11-07 01:01:31,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:01:31,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:01:31,798 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:01:31,805 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 [2021-11-07 01:01:31,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:01:31,818 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) [2021-11-07 01:01:31,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:01:31,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:31,823 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:01:31,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:01:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-11-07 01:01:31,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:31,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437996931] [2021-11-07 01:01:31,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:31,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:01:31,960 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:01:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:01:32,033 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:01:32,035 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:01:32,036 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:01:32,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:01:32,042 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:01:32,045 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:01:32,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:01:32 BoogieIcfgContainer [2021-11-07 01:01:32,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:01:32,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:01:32,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:01:32,067 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:01:32,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:01:31" (3/4) ... [2021-11-07 01:01:32,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:01:32,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:01:32,075 INFO L168 Benchmark]: Toolchain (without parser) took 963.84 ms. Allocated memory is still 130.0 MB. Free memory was 91.3 MB in the beginning and 76.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:01:32,075 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 130.0 MB. Free memory is still 107.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:01:32,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.22 ms. Allocated memory is still 130.0 MB. Free memory was 91.2 MB in the beginning and 103.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:01:32,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.73 ms. Allocated memory is still 130.0 MB. Free memory was 103.8 MB in the beginning and 102.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:01:32,079 INFO L168 Benchmark]: Boogie Preprocessor took 17.75 ms. Allocated memory is still 130.0 MB. Free memory was 102.4 MB in the beginning and 101.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:01:32,080 INFO L168 Benchmark]: RCFGBuilder took 287.87 ms. Allocated memory is still 130.0 MB. Free memory was 101.4 MB in the beginning and 90.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:01:32,081 INFO L168 Benchmark]: TraceAbstraction took 365.71 ms. Allocated memory is still 130.0 MB. Free memory was 89.9 MB in the beginning and 77.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:01:32,087 INFO L168 Benchmark]: Witness Printer took 5.21 ms. Allocated memory is still 130.0 MB. Free memory was 77.3 MB in the beginning and 76.7 MB in the end (delta: 536.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:01:32,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 130.0 MB. Free memory is still 107.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.22 ms. Allocated memory is still 130.0 MB. Free memory was 91.2 MB in the beginning and 103.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.73 ms. Allocated memory is still 130.0 MB. Free memory was 103.8 MB in the beginning and 102.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.75 ms. Allocated memory is still 130.0 MB. Free memory was 102.4 MB in the beginning and 101.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 287.87 ms. Allocated memory is still 130.0 MB. Free memory was 101.4 MB in the beginning and 90.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 365.71 ms. Allocated memory is still 130.0 MB. Free memory was 89.9 MB in the beginning and 77.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.21 ms. Allocated memory is still 130.0 MB. Free memory was 77.3 MB in the beginning and 76.7 MB in the end (delta: 536.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 29]: 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 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.399f) [L29] reach_error() - 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: No data available, 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 [2021-11-07 01:01:32,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/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_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8 --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 fd48c40c85c60cda828d5ba2f8e19cb59d8c4d05a17351e2a1fd8bd0f9353e6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:01:34,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:01:34,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:01:34,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:01:34,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:01:34,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:01:34,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:01:34,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:01:34,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:01:34,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:01:34,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:01:34,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:01:34,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:01:34,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:01:34,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:01:34,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:01:34,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:01:34,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:01:34,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:01:34,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:01:34,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:01:34,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:01:34,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:01:34,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:01:34,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:01:34,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:01:34,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:01:34,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:01:34,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:01:34,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:01:34,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:01:34,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:01:34,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:01:34,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:01:34,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:01:34,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:01:34,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:01:34,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:01:34,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:01:34,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:01:34,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:01:34,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:01:34,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:01:34,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:01:34,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:01:34,722 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:01:34,722 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:01:34,723 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:01:34,723 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:01:34,723 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:01:34,723 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:01:34,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:01:34,726 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:01:34,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:01:34,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:01:34,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:01:34,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:01:34,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:01:34,727 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:01:34,727 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:01:34,727 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:01:34,728 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:01:34,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:01:34,728 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:01:34,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:01:34,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:01:34,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:01:34,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:01:34,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:01:34,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:01:34,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:01:34,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:01:34,730 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:01:34,730 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:34,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:01:34,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:01:34,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:01:34,732 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_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd48c40c85c60cda828d5ba2f8e19cb59d8c4d05a17351e2a1fd8bd0f9353e6c [2021-11-07 01:01:35,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:01:35,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:01:35,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:01:35,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:01:35,164 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:01:35,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/square_6.i [2021-11-07 01:01:35,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data/147a218aa/d122f8c70ac343f9844e6ee27de3df22/FLAGe2c7dcf41 [2021-11-07 01:01:35,712 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:01:35,712 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/sv-benchmarks/c/floats-cdfpl/square_6.i [2021-11-07 01:01:35,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data/147a218aa/d122f8c70ac343f9844e6ee27de3df22/FLAGe2c7dcf41 [2021-11-07 01:01:36,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/data/147a218aa/d122f8c70ac343f9844e6ee27de3df22 [2021-11-07 01:01:36,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:01:36,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:01:36,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:01:36,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:01:36,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:01:36,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffdfaac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36, skipping insertion in model container [2021-11-07 01:01:36,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:01:36,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:01:36,289 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_3dda519c-7046-4809-8cf3-bcfd6191bcee/sv-benchmarks/c/floats-cdfpl/square_6.i[1129,1142] [2021-11-07 01:01:36,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:01:36,305 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:01:36,341 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_3dda519c-7046-4809-8cf3-bcfd6191bcee/sv-benchmarks/c/floats-cdfpl/square_6.i[1129,1142] [2021-11-07 01:01:36,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:01:36,387 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:01:36,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36 WrapperNode [2021-11-07 01:01:36,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:01:36,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:01:36,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:01:36,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:01:36,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:01:36,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:01:36,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:01:36,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:01:36,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:01:36,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:01:36,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:01:36,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:01:36,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (1/1) ... [2021-11-07 01:01:36,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:01:36,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:36,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:01:36,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:01:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:01:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:01:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:01:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:01:38,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:01:38,899 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 01:01:38,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:01:38 BoogieIcfgContainer [2021-11-07 01:01:38,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:01:38,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:01:38,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:01:38,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:01:38,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:01:36" (1/3) ... [2021-11-07 01:01:38,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcd88e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:01:38, skipping insertion in model container [2021-11-07 01:01:38,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:36" (2/3) ... [2021-11-07 01:01:38,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcd88e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:01:38, skipping insertion in model container [2021-11-07 01:01:38,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:01:38" (3/3) ... [2021-11-07 01:01:38,912 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6.i [2021-11-07 01:01:38,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:01:38,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:01:38,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:01:38,971 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 [2021-11-07 01:01:38,972 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:01:38,987 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) [2021-11-07 01:01:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:01:38,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:38,997 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:01:38,998 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:01:39,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:39,019 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-07 01:01:39,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:39,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395217583] [2021-11-07 01:01:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:39,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:39,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:39,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:39,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:01:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:39,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:01:39,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:01:39,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:01:39,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:39,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395217583] [2021-11-07 01:01:39,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395217583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:39,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:01:39,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:01:39,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051395589] [2021-11-07 01:01:39,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:01:39,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:01:39,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:01:39,704 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) [2021-11-07 01:01:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:39,713 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-07 01:01:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:01:39,715 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 [2021-11-07 01:01:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:39,722 INFO L225 Difference]: With dead ends: 19 [2021-11-07 01:01:39,722 INFO L226 Difference]: Without dead ends: 7 [2021-11-07 01:01:39,725 INFO L786 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 [2021-11-07 01:01:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-07 01:01:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-07 01:01:39,750 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) [2021-11-07 01:01:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-07 01:01:39,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-07 01:01:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:39,752 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-07 01:01:39,752 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) [2021-11-07 01:01:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-07 01:01:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:01:39,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:39,753 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:01:39,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:01:39,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:01:39,970 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:01:39,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-07 01:01:39,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:39,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259837446] [2021-11-07 01:01:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:39,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:39,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:39,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:39,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dda519c-7046-4809-8cf3-bcfd6191bcee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:15:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:04,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:15:04,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:19,651 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (= (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)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (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) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (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) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) c_ULTIMATE.start_main_~result~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 01:16:08,956 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (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)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (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) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1)))) is different from false [2021-11-07 01:16:11,000 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (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)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (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) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1)))) is different from true [2021-11-07 01:16:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:11,001 INFO L328 TraceCheckSpWp]: Computing backward predicates...