./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P --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 bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:24:13,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:24:13,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:24:13,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:24:13,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:24:13,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:24:13,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:24:13,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:24:13,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:24:13,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:24:13,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:24:13,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:24:13,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:24:13,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:24:13,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:24:13,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:24:13,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:24:13,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:24:13,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:24:13,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:24:13,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:24:13,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:24:13,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:24:13,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:24:13,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:24:13,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:24:13,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:24:13,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:24:13,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:24:13,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:24:13,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:24:13,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:24:13,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:24:13,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:24:13,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:24:13,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:24:13,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:24:13,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:24:13,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:24:13,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:24:13,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:24:13,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:24:13,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:24:13,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:24:13,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:24:13,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:24:13,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:24:13,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:24:13,311 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:24:13,311 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:24:13,311 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:24:13,311 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:24:13,312 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:24:13,313 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:24:13,313 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:24:13,313 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:24:13,313 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:24:13,314 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:24:13,314 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:24:13,314 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:24:13,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:24:13,315 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:24:13,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:24:13,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:24:13,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:24:13,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:24:13,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:24:13,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:24:13,317 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:24:13,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:24:13,317 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:24:13,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:24:13,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:24:13,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:24:13,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:24:13,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:24:13,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:24:13,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:24:13,319 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:24:13,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:24:13,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:24:13,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:24:13,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:24:13,320 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d [2021-11-21 00:24:13,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:24:13,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:24:13,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:24:13,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:24:13,628 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:24:13,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2021-11-21 00:24:13,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data/3a3f5f4dd/7821f74d56794c3caa5a8b559ab45acd/FLAG2a3b164dc [2021-11-21 00:24:14,184 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:24:14,184 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2021-11-21 00:24:14,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data/3a3f5f4dd/7821f74d56794c3caa5a8b559ab45acd/FLAG2a3b164dc [2021-11-21 00:24:14,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data/3a3f5f4dd/7821f74d56794c3caa5a8b559ab45acd [2021-11-21 00:24:14,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:24:14,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:24:14,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:24:14,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:24:14,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:24:14,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad278e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14, skipping insertion in model container [2021-11-21 00:24:14,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:24:14,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:24:14,736 WARN L230 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2021-11-21 00:24:14,765 WARN L230 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2021-11-21 00:24:14,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:24:14,793 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:24:14,818 WARN L230 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2021-11-21 00:24:14,831 WARN L230 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2021-11-21 00:24:14,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:24:14,846 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:24:14,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14 WrapperNode [2021-11-21 00:24:14,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:24:14,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:24:14,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:24:14,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:24:14,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,887 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-21 00:24:14,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:24:14,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:24:14,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:24:14,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:24:14,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:24:14,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:24:14,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:24:14,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:24:14,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (1/1) ... [2021-11-21 00:24:14,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:24:14,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:24:14,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:24:14,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:24:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:24:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:24:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:24:14,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:24:15,057 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:24:15,059 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:24:15,224 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:24:15,271 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:24:15,271 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:24:15,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:15 BoogieIcfgContainer [2021-11-21 00:24:15,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:24:15,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:24:15,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:24:15,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:24:15,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:24:14" (1/3) ... [2021-11-21 00:24:15,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d549398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:24:15, skipping insertion in model container [2021-11-21 00:24:15,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:14" (2/3) ... [2021-11-21 00:24:15,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d549398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:24:15, skipping insertion in model container [2021-11-21 00:24:15,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:15" (3/3) ... [2021-11-21 00:24:15,282 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_6.i [2021-11-21 00:24:15,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:24:15,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:24:15,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:24:15,343 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 [2021-11-21 00:24:15,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:24:15,357 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) [2021-11-21 00:24:15,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:24:15,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:15,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:24:15,364 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:24:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-21 00:24:15,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:15,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010203629] [2021-11-21 00:24:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:15,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:24:15,477 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:24:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:24:15,508 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:24:15,510 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:24:15,511 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 00:24:15,513 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 00:24:15,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:24:15,518 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 00:24:15,521 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:24:15,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:24:15 BoogieIcfgContainer [2021-11-21 00:24:15,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:24:15,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:24:15,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:24:15,543 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:24:15,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:15" (3/4) ... [2021-11-21 00:24:15,547 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:24:15,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:24:15,548 INFO L158 Benchmark]: Toolchain (without parser) took 990.18ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 69.5MB in the end (delta: 19.0MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2021-11-21 00:24:15,549 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory was 95.3MB in the beginning and 95.3MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:24:15,550 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.26ms. Allocated memory is still 125.8MB. Free memory was 88.3MB in the beginning and 98.9MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:24:15,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.74ms. Allocated memory is still 125.8MB. Free memory was 98.9MB in the beginning and 96.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:24:15,551 INFO L158 Benchmark]: Boogie Preprocessor took 23.99ms. Allocated memory is still 125.8MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:24:15,552 INFO L158 Benchmark]: RCFGBuilder took 361.57ms. Allocated memory is still 125.8MB. Free memory was 95.4MB in the beginning and 82.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:24:15,552 INFO L158 Benchmark]: TraceAbstraction took 266.34ms. Allocated memory is still 125.8MB. Free memory was 82.1MB in the beginning and 69.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:24:15,553 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 125.8MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:24:15,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory was 95.3MB in the beginning and 95.3MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.26ms. Allocated memory is still 125.8MB. Free memory was 88.3MB in the beginning and 98.9MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.74ms. Allocated memory is still 125.8MB. Free memory was 98.9MB in the beginning and 96.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.99ms. Allocated memory is still 125.8MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.57ms. Allocated memory is still 125.8MB. Free memory was 95.4MB in the beginning and 82.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 266.34ms. Allocated memory is still 125.8MB. Free memory was 82.1MB in the beginning and 69.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 125.8MB. Free memory is still 69.5MB. 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 > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [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: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 00:24:15,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P --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 bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:24:18,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:24:18,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:24:18,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:24:18,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:24:18,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:24:18,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:24:18,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:24:18,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:24:18,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:24:18,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:24:18,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:24:18,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:24:18,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:24:18,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:24:18,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:24:18,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:24:18,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:24:18,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:24:18,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:24:18,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:24:18,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:24:18,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:24:18,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:24:18,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:24:18,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:24:18,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:24:18,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:24:18,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:24:18,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:24:18,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:24:18,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:24:18,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:24:18,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:24:18,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:24:18,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:24:18,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:24:18,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:24:18,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:24:18,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:24:18,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:24:18,215 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 00:24:18,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:24:18,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:24:18,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:24:18,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:24:18,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:24:18,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:24:18,261 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:24:18,262 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:24:18,262 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:24:18,262 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:24:18,263 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:24:18,263 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:24:18,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:24:18,265 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:24:18,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:24:18,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:24:18,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:24:18,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:24:18,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:24:18,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:24:18,267 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:24:18,267 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:24:18,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:24:18,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:24:18,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:24:18,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:24:18,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:24:18,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:24:18,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:24:18,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:24:18,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:24:18,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:24:18,270 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:24:18,270 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:24:18,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:24:18,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:24:18,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:24:18,271 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d [2021-11-21 00:24:18,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:24:18,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:24:18,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:24:18,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:24:18,653 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:24:18,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2021-11-21 00:24:18,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data/30d7cf318/57333c31d4af44b695fe4a5714b7d32f/FLAG3efc994b3 [2021-11-21 00:24:19,220 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:24:19,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2021-11-21 00:24:19,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data/30d7cf318/57333c31d4af44b695fe4a5714b7d32f/FLAG3efc994b3 [2021-11-21 00:24:19,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/data/30d7cf318/57333c31d4af44b695fe4a5714b7d32f [2021-11-21 00:24:19,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:24:19,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:24:19,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:24:19,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:24:19,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:24:19,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:19,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3243be9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19, skipping insertion in model container [2021-11-21 00:24:19,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:19,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:24:19,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:24:19,796 WARN L230 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2021-11-21 00:24:19,824 WARN L230 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2021-11-21 00:24:19,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:24:19,837 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:24:19,893 WARN L230 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2021-11-21 00:24:19,917 WARN L230 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_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2021-11-21 00:24:19,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:24:19,946 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:24:19,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19 WrapperNode [2021-11-21 00:24:19,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:24:19,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:24:19,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:24:19,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:24:19,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:19,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:19,988 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-21 00:24:19,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:24:19,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:24:19,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:24:19,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:24:19,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:19,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:20,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:20,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:20,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:20,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:20,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:20,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:24:20,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:24:20,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:24:20,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:24:20,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (1/1) ... [2021-11-21 00:24:20,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:24:20,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:24:20,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:24:20,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:24:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:24:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:24:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:24:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:24:20,210 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:24:20,212 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:24:26,301 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:24:26,307 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:24:26,307 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:24:26,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:26 BoogieIcfgContainer [2021-11-21 00:24:26,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:24:26,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:24:26,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:24:26,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:24:26,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:24:19" (1/3) ... [2021-11-21 00:24:26,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556ac55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:24:26, skipping insertion in model container [2021-11-21 00:24:26,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:19" (2/3) ... [2021-11-21 00:24:26,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556ac55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:24:26, skipping insertion in model container [2021-11-21 00:24:26,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:26" (3/3) ... [2021-11-21 00:24:26,318 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_6.i [2021-11-21 00:24:26,323 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:24:26,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:24:26,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:24:26,399 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 [2021-11-21 00:24:26,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:24:26,412 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) [2021-11-21 00:24:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:24:26,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:26,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:26,419 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:24:26,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:26,425 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-21 00:24:26,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:24:26,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614300588] [2021-11-21 00:24:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:26,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:24:26,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:24:26,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:24:26,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:24:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:27,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 00:24:27,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:24:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:24:27,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:24:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:24:27,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:24:27,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614300588] [2021-11-21 00:24:27,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614300588] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:27,762 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:27,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:24:27,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666621559] [2021-11-21 00:24:27,764 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:27,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:24:27,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:24:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:24:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:24:27,815 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) [2021-11-21 00:24:27,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:27,839 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-21 00:24:27,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:24:27,847 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 [2021-11-21 00:24:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:27,857 INFO L225 Difference]: With dead ends: 47 [2021-11-21 00:24:27,857 INFO L226 Difference]: Without dead ends: 19 [2021-11-21 00:24:27,860 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 [2021-11-21 00:24:27,867 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:27,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:24:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-21 00:24:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-21 00:24:27,905 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) [2021-11-21 00:24:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-21 00:24:27,909 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-21 00:24:27,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:27,909 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-21 00:24:27,910 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) [2021-11-21 00:24:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-21 00:24:27,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:24:27,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:27,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:27,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:24:28,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:24:28,128 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:24:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:28,130 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-21 00:24:28,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:24:28,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661837158] [2021-11-21 00:24:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:28,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:24:28,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:24:28,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:24:28,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:24:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:24:34,823 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:24:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:24:49,184 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 00:24:49,185 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:24:49,187 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 00:24:49,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 00:24:49,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 00:24:49,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:24:49,394 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 00:24:49,398 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:24:49,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:24:49 BoogieIcfgContainer [2021-11-21 00:24:49,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:24:49,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:24:49,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:24:49,432 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:24:49,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:26" (3/4) ... [2021-11-21 00:24:49,434 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 00:24:49,484 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:24:49,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:24:49,486 INFO L158 Benchmark]: Toolchain (without parser) took 29885.43ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 47.6MB in the beginning and 57.0MB in the end (delta: -9.4MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-11-21 00:24:49,486 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:24:49,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.42ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 50.2MB in the end (delta: -2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:24:49,488 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.54ms. Allocated memory is still 67.1MB. Free memory was 50.0MB in the beginning and 48.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:24:49,488 INFO L158 Benchmark]: Boogie Preprocessor took 30.45ms. Allocated memory is still 67.1MB. Free memory was 48.2MB in the beginning and 46.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:24:49,489 INFO L158 Benchmark]: RCFGBuilder took 6289.26ms. Allocated memory is still 67.1MB. Free memory was 46.7MB in the beginning and 36.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:24:49,490 INFO L158 Benchmark]: TraceAbstraction took 23120.21ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 36.1MB in the beginning and 58.9MB in the end (delta: -22.9MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-11-21 00:24:49,490 INFO L158 Benchmark]: Witness Printer took 52.61ms. Allocated memory is still 98.6MB. Free memory was 58.9MB in the beginning and 57.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:24:49,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.42ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 50.2MB in the end (delta: -2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.54ms. Allocated memory is still 67.1MB. Free memory was 50.0MB in the beginning and 48.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.45ms. Allocated memory is still 67.1MB. Free memory was 48.2MB in the beginning and 46.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6289.26ms. Allocated memory is still 67.1MB. Free memory was 46.7MB in the beginning and 36.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 23120.21ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 36.1MB in the beginning and 58.9MB in the end (delta: -22.9MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 52.61ms. Allocated memory is still 98.6MB. Free memory was 58.9MB in the beginning and 57.0MB in the end (delta: 2.0MB). 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 > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [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)=-0.9217368364334106, \result=-0.7968756556510925, x=-0.9217368364334106] [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)=-0.9217368364334106, \result=0.6061280369758606, x=-0.9217368364334106] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.9217368364334106, x=0.3929617404937744] [L102] reach_error() VAL [IN=-0.9217368364334106, x=0.3929617404937744] - 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: 23.0s, 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, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s 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, 0.0s 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, 7.7s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 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! [2021-11-21 00:24:49,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2f72d5-c6d7-4144-8ce8-3e68be447ed2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE