./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/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 ad34237e996cd331563e8b065d0d5380e94c9435b4bac2fb1e22d28e3c8a5cb6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:35:41,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:35:41,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:35:41,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:35:41,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:35:41,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:35:41,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:35:41,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:35:41,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:35:41,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:35:41,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:35:41,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:35:41,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:35:41,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:35:41,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:35:41,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:35:41,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:35:41,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:35:41,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:35:41,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:35:41,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:35:41,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:35:41,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:35:41,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:35:41,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:35:41,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:35:41,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:35:41,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:35:41,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:35:41,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:35:41,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:35:41,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:35:41,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:35:41,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:35:41,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:35:41,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:35:41,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:35:41,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:35:41,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:35:41,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:35:41,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:35:41,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:35:41,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:35:41,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:35:41,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:35:41,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:35:41,212 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:35:41,213 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:35:41,213 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:35:41,213 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:35:41,213 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:35:41,214 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:35:41,214 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:35:41,214 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:35:41,214 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:35:41,215 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:35:41,215 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:35:41,215 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:35:41,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:35:41,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:35:41,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:35:41,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:35:41,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:35:41,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:35:41,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:35:41,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:35:41,223 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:35:41,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:35:41,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:35:41,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:35:41,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:35:41,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:35:41,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:35:41,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:35:41,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:35:41,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:35:41,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:35:41,226 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:35:41,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:35:41,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:35:41,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:35:41,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:35:41,226 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad34237e996cd331563e8b065d0d5380e94c9435b4bac2fb1e22d28e3c8a5cb6 [2021-11-12 23:35:41,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:35:41,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:35:41,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:35:41,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:35:41,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:35:41,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.i [2021-11-12 23:35:41,592 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data/cbccea5a6/e8161b4991f446679f1108150155f401/FLAG499887774 [2021-11-12 23:35:42,045 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:35:42,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i [2021-11-12 23:35:42,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data/cbccea5a6/e8161b4991f446679f1108150155f401/FLAG499887774 [2021-11-12 23:35:42,434 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data/cbccea5a6/e8161b4991f446679f1108150155f401 [2021-11-12 23:35:42,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:35:42,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:35:42,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:35:42,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:35:42,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:35:42,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa67291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42, skipping insertion in model container [2021-11-12 23:35:42,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:35:42,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:35:42,653 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[1226,1239] [2021-11-12 23:35:42,684 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[2786,2799] [2021-11-12 23:35:42,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:35:42,693 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:35:42,705 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[1226,1239] [2021-11-12 23:35:42,717 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[2786,2799] [2021-11-12 23:35:42,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:35:42,732 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:35:42,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42 WrapperNode [2021-11-12 23:35:42,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:35:42,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:35:42,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:35:42,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:35:42,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:35:42,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:35:42,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:35:42,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:35:42,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:35:42,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:35:42,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:35:42,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:35:42,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (1/1) ... [2021-11-12 23:35:42,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:35:42,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:35:42,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:35:42,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:35:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:35:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:35:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:35:42,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:35:43,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:35:43,172 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:35:43,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:35:43 BoogieIcfgContainer [2021-11-12 23:35:43,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:35:43,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:35:43,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:35:43,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:35:43,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:35:42" (1/3) ... [2021-11-12 23:35:43,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2903ff66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:35:43, skipping insertion in model container [2021-11-12 23:35:43,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:42" (2/3) ... [2021-11-12 23:35:43,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2903ff66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:35:43, skipping insertion in model container [2021-11-12 23:35:43,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:35:43" (3/3) ... [2021-11-12 23:35:43,206 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_4.i [2021-11-12 23:35:43,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:35:43,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:35:43,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:35:43,287 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 23:35:43,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:35:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:35:43,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:35:43,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:35:43,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:35:43,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:35:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:35:43,340 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-12 23:35:43,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:35:43,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254306737] [2021-11-12 23:35:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:35:43,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:35:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:35:43,518 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:35:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:35:43,587 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:35:43,590 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:35:43,591 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-12 23:35:43,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-12 23:35:43,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:35:43,601 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 23:35:43,612 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:35:43,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:35:43 BoogieIcfgContainer [2021-11-12 23:35:43,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:35:43,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:35:43,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:35:43,636 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:35:43,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:35:43" (3/4) ... [2021-11-12 23:35:43,639 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:35:43,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:35:43,641 INFO L158 Benchmark]: Toolchain (without parser) took 1203.00ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 70.1MB in the beginning and 98.8MB in the end (delta: -28.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:35:43,642 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 55.3MB in the beginning and 55.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:35:43,642 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.37ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 76.8MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:35:43,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.46ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 74.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:35:43,644 INFO L158 Benchmark]: Boogie Preprocessor took 26.09ms. Allocated memory is still 102.8MB. Free memory was 74.8MB in the beginning and 73.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:35:43,644 INFO L158 Benchmark]: RCFGBuilder took 368.10ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 60.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:35:43,645 INFO L158 Benchmark]: TraceAbstraction took 458.35ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 60.1MB in the beginning and 99.1MB in the end (delta: -39.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-11-12 23:35:43,646 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 123.7MB. Free memory was 99.1MB in the beginning and 98.8MB in the end (delta: 327.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:35:43,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 55.3MB in the beginning and 55.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.37ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 76.8MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.46ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 74.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.09ms. Allocated memory is still 102.8MB. Free memory was 74.8MB in the beginning and 73.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 368.10ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 60.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 458.35ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 60.1MB in the beginning and 99.1MB in the end (delta: -39.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 123.7MB. Free memory was 99.1MB in the beginning and 98.8MB in the end (delta: 327.7kB). 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: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=15occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 23:35:43,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/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 ad34237e996cd331563e8b065d0d5380e94c9435b4bac2fb1e22d28e3c8a5cb6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:35:46,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:35:46,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:35:46,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:35:46,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:35:46,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:35:46,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:35:46,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:35:46,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:35:46,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:35:46,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:35:46,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:35:46,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:35:46,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:35:46,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:35:46,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:35:46,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:35:46,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:35:46,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:35:46,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:35:46,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:35:46,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:35:46,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:35:46,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:35:46,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:35:46,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:35:46,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:35:46,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:35:46,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:35:46,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:35:46,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:35:46,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:35:46,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:35:46,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:35:46,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:35:46,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:35:46,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:35:46,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:35:46,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:35:46,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:35:46,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:35:46,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:35:46,266 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:35:46,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:35:46,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:35:46,268 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:35:46,268 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:35:46,269 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:35:46,269 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:35:46,269 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:35:46,269 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:35:46,270 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:35:46,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:35:46,272 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:35:46,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:35:46,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:35:46,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:35:46,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:35:46,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:35:46,274 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:35:46,274 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:35:46,274 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:35:46,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:35:46,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:35:46,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:35:46,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:35:46,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:35:46,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:35:46,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:35:46,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:35:46,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:35:46,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:35:46,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:35:46,277 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:35:46,277 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:35:46,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:35:46,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:35:46,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:35:46,278 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad34237e996cd331563e8b065d0d5380e94c9435b4bac2fb1e22d28e3c8a5cb6 [2021-11-12 23:35:46,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:35:46,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:35:46,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:35:46,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:35:46,662 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:35:46,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.i [2021-11-12 23:35:46,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data/5128f883f/50d0dcab82cc44898d58387da0383850/FLAG9017158f8 [2021-11-12 23:35:47,221 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:35:47,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i [2021-11-12 23:35:47,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data/5128f883f/50d0dcab82cc44898d58387da0383850/FLAG9017158f8 [2021-11-12 23:35:47,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/data/5128f883f/50d0dcab82cc44898d58387da0383850 [2021-11-12 23:35:47,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:35:47,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:35:47,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:35:47,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:35:47,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:35:47,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cddedab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47, skipping insertion in model container [2021-11-12 23:35:47,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:35:47,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:35:47,749 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[1226,1239] [2021-11-12 23:35:47,774 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[2786,2799] [2021-11-12 23:35:47,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:35:47,788 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:35:47,801 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[1226,1239] [2021-11-12 23:35:47,812 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_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[2786,2799] [2021-11-12 23:35:47,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:35:47,855 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:35:47,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47 WrapperNode [2021-11-12 23:35:47,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:35:47,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:35:47,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:35:47,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:35:47,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:35:47,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:35:47,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:35:47,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:35:47,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:35:47,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:35:47,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:35:47,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:35:47,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (1/1) ... [2021-11-12 23:35:47,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:35:47,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:35:47,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:35:47,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:35:48,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:35:48,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:35:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:35:48,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:35:54,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:35:54,979 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:35:54,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:35:54 BoogieIcfgContainer [2021-11-12 23:35:54,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:35:54,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:35:54,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:35:54,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:35:54,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:35:47" (1/3) ... [2021-11-12 23:35:54,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5050df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:35:54, skipping insertion in model container [2021-11-12 23:35:54,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:47" (2/3) ... [2021-11-12 23:35:54,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5050df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:35:54, skipping insertion in model container [2021-11-12 23:35:54,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:35:54" (3/3) ... [2021-11-12 23:35:54,989 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_4.i [2021-11-12 23:35:54,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:35:54,995 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:35:55,042 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:35:55,049 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 23:35:55,050 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:35:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 23:35:55,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:35:55,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:35:55,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:35:55,070 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:35:55,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:35:55,075 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-12 23:35:55,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:35:55,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222828177] [2021-11-12 23:35:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:35:55,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:35:55,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:35:55,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:35:55,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:35:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:35:56,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:35:56,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:56,385 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 23:35:56,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:56,446 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 23:35:56,447 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:35:56,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222828177] [2021-11-12 23:35:56,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222828177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:35:56,449 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:35:56,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:35:56,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972698371] [2021-11-12 23:35:56,453 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:35:56,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:35:56,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:35:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:35:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:35:56,496 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:35:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:35:56,511 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-12 23:35:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:35:56,513 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 23:35:56,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:35:56,521 INFO L225 Difference]: With dead ends: 46 [2021-11-12 23:35:56,521 INFO L226 Difference]: Without dead ends: 19 [2021-11-12 23:35:56,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 23:35:56,528 INFO L933 BasicCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:35:56,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:35:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-12 23:35:56,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-12 23:35:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 23:35:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-12 23:35:56,560 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-12 23:35:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:35:56,561 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-12 23:35:56,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:35:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-12 23:35:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:35:56,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:35:56,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:35:56,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:35:56,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:35:56,777 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:35:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:35:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-12 23:35:56,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:35:56,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494774119] [2021-11-12 23:35:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:35:56,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:35:56,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:35:56,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:35:56,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:37:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:37:32,560 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:38:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:38:13,608 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:38:13,608 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:38:13,609 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-12 23:38:13,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-12 23:38:13,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:38:13,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:38:13,816 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:38:13,819 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:38:13,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:38:13 BoogieIcfgContainer [2021-11-12 23:38:13,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:38:13,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:38:13,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:38:13,876 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:38:13,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:35:54" (3/4) ... [2021-11-12 23:38:13,878 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 23:38:13,918 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:38:13,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:38:13,919 INFO L158 Benchmark]: Toolchain (without parser) took 146348.18ms. Allocated memory is still 69.2MB. Free memory was 53.6MB in the beginning and 33.4MB in the end (delta: 20.3MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-11-12 23:38:13,919 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 69.2MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:38:13,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.33ms. Allocated memory is still 69.2MB. Free memory was 53.5MB in the beginning and 53.5MB in the end (delta: 32.4kB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-11-12 23:38:13,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.55ms. Allocated memory is still 69.2MB. Free memory was 53.2MB in the beginning and 51.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:38:13,921 INFO L158 Benchmark]: Boogie Preprocessor took 32.99ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 50.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:38:13,921 INFO L158 Benchmark]: RCFGBuilder took 7036.53ms. Allocated memory is still 69.2MB. Free memory was 50.1MB in the beginning and 38.9MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:38:13,922 INFO L158 Benchmark]: TraceAbstraction took 138891.51ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 35.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2021-11-12 23:38:13,922 INFO L158 Benchmark]: Witness Printer took 42.98ms. Allocated memory is still 69.2MB. Free memory was 35.6MB in the beginning and 33.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:38:13,925 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 69.2MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.33ms. Allocated memory is still 69.2MB. Free memory was 53.5MB in the beginning and 53.5MB in the end (delta: 32.4kB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.55ms. Allocated memory is still 69.2MB. Free memory was 53.2MB in the beginning and 51.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.99ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 50.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 7036.53ms. Allocated memory is still 69.2MB. Free memory was 50.1MB in the beginning and 38.9MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 138891.51ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 35.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * Witness Printer took 42.98ms. Allocated memory is still 69.2MB. Free memory was 35.6MB in the beginning and 33.4MB 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 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.7522118091583252, \result=-0.6833093762397766, x=-0.7522118091583252] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.7522118091583252, \result=0.7306801080703735, x=-0.7522118091583252] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.7522118091583252, x=0.18295717239379883] [L102] reach_error() VAL [IN=-0.7522118091583252, x=0.18295717239379883] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 138.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.00ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.00ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 96.8s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! [2021-11-12 23:38:14,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41261582-7b6b-4f6b-aec8-5e8ff8e1a13b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE