./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_2+newton_1_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3dbff123fe4d446bdb4fa52d8405b7591df523648ee08eb41c859388ca62eb5e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:40:00,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:40:00,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:40:00,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:40:00,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:40:00,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:40:00,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:40:00,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:40:00,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:40:00,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:40:00,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:40:00,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:40:00,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:40:00,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:40:00,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:40:00,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:40:00,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:40:00,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:40:00,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:40:00,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:40:00,237 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:40:00,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:40:00,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:40:00,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:40:00,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:40:00,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:40:00,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:40:00,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:40:00,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:40:00,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:40:00,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:40:00,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:40:00,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:40:00,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:40:00,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:40:00,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:40:00,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:40:00,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:40:00,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:40:00,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:40:00,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:40:00,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:40:00,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:40:00,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:40:00,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:40:00,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:40:00,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:40:00,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:40:00,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:40:00,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:40:00,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:40:00,280 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:40:00,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:40:00,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:40:00,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:40:00,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:40:00,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:40:00,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:40:00,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:40:00,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:40:00,281 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:40:00,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:40:00,282 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:40:00,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:40:00,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:40:00,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:40:00,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:40:00,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:40:00,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:40:00,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:40:00,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:40:00,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:40:00,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:40:00,283 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:40:00,284 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:40:00,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:40:00,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dbff123fe4d446bdb4fa52d8405b7591df523648ee08eb41c859388ca62eb5e [2022-07-19 19:40:00,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:40:00,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:40:00,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:40:00,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:40:00,456 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:40:00,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_2.i [2022-07-19 19:40:00,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0f26170/1e7da00069e44ac38558fda333c3df93/FLAG0778ac431 [2022-07-19 19:40:00,809 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:40:00,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i [2022-07-19 19:40:00,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0f26170/1e7da00069e44ac38558fda333c3df93/FLAG0778ac431 [2022-07-19 19:40:01,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0f26170/1e7da00069e44ac38558fda333c3df93 [2022-07-19 19:40:01,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:40:01,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:40:01,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:40:01,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:40:01,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:40:01,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c4004f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01, skipping insertion in model container [2022-07-19 19:40:01,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:40:01,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:40:01,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i[1226,1239] [2022-07-19 19:40:01,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i[2820,2833] [2022-07-19 19:40:01,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:40:01,411 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:40:01,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i[1226,1239] [2022-07-19 19:40:01,434 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i[2820,2833] [2022-07-19 19:40:01,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:40:01,453 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:40:01,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01 WrapperNode [2022-07-19 19:40:01,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:40:01,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:40:01,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:40:01,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:40:01,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,495 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-19 19:40:01,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:40:01,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:40:01,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:40:01,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:40:01,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:40:01,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:40:01,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:40:01,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:40:01,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (1/1) ... [2022-07-19 19:40:01,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:40:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:40:01,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 19:40:01,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 19:40:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:40:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:40:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:40:01,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:40:01,666 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:40:01,667 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:40:01,826 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:40:01,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:40:01,830 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 19:40:01,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:40:01 BoogieIcfgContainer [2022-07-19 19:40:01,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:40:01,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:40:01,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:40:01,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:40:01,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:40:01" (1/3) ... [2022-07-19 19:40:01,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204a03c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:40:01, skipping insertion in model container [2022-07-19 19:40:01,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:01" (2/3) ... [2022-07-19 19:40:01,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204a03c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:40:01, skipping insertion in model container [2022-07-19 19:40:01,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:40:01" (3/3) ... [2022-07-19 19:40:01,837 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_2.i [2022-07-19 19:40:01,846 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:40:01,851 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:40:01,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:40:01,911 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@46b37cb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e9df96f [2022-07-19 19:40:01,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:40:01,921 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) [2022-07-19 19:40:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 19:40:01,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:40:01,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:40:01,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:40:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:40:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-19 19:40:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:40:01,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203047519] [2022-07-19 19:40:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:40:01,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:40:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:40:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:40:02,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:40:02,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203047519] [2022-07-19 19:40:02,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203047519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:40:02,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:40:02,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 19:40:02,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313958688] [2022-07-19 19:40:02,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:40:02,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 19:40:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:40:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 19:40:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:40:02,078 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) [2022-07-19 19:40:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:40:02,091 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-19 19:40:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 19:40:02,093 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 [2022-07-19 19:40:02,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:40:02,098 INFO L225 Difference]: With dead ends: 47 [2022-07-19 19:40:02,098 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 19:40:02,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:40:02,106 INFO L413 NwaCegarLoop]: 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 [2022-07-19 19:40:02,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:40:02,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 19:40:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 19:40:02,126 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) [2022-07-19 19:40:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-19 19:40:02,128 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-19 19:40:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:40:02,128 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-19 19:40:02,128 INFO L496 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) [2022-07-19 19:40:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-19 19:40:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 19:40:02,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:40:02,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:40:02,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:40:02,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:40:02,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:40:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-19 19:40:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:40:02,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069971470] [2022-07-19 19:40:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:40:02,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:40:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 19:40:02,164 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 19:40:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 19:40:02,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 19:40:02,199 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 19:40:02,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 19:40:02,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-19 19:40:02,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:40:02,211 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 19:40:02,221 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 19:40:02,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 07:40:02 BoogieIcfgContainer [2022-07-19 19:40:02,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 19:40:02,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 19:40:02,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 19:40:02,255 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 19:40:02,255 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:40:01" (3/4) ... [2022-07-19 19:40:02,257 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 19:40:02,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 19:40:02,259 INFO L158 Benchmark]: Toolchain (without parser) took 1010.55ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 83.2MB in the beginning and 121.7MB in the end (delta: -38.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 19:40:02,259 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 19:40:02,261 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.90ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 85.1MB in the end (delta: -2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 19:40:02,261 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.39ms. Allocated memory is still 109.1MB. Free memory was 85.1MB in the beginning and 83.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 19:40:02,262 INFO L158 Benchmark]: Boogie Preprocessor took 29.39ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 81.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 19:40:02,263 INFO L158 Benchmark]: RCFGBuilder took 303.23ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 70.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 19:40:02,264 INFO L158 Benchmark]: TraceAbstraction took 419.75ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 70.1MB in the beginning and 122.3MB in the end (delta: -52.2MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2022-07-19 19:40:02,264 INFO L158 Benchmark]: Witness Printer took 2.85ms. Allocated memory is still 144.7MB. Free memory was 122.3MB in the beginning and 121.7MB in the end (delta: 635.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 19:40:02,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.90ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 85.1MB in the end (delta: -2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.39ms. Allocated memory is still 109.1MB. Free memory was 85.1MB in the beginning and 83.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.39ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 81.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 303.23ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 70.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 419.75ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 70.1MB in the beginning and 122.3MB in the end (delta: -52.2MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * Witness Printer took 2.85ms. Allocated memory is still 144.7MB. Free memory was 122.3MB in the beginning and 121.7MB in the end (delta: 635.1kB). 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 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [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)=49, x=49] [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)=49, x=49] [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, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 2 GetRequests, 2 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-07-19 19:40:02,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_2+newton_1_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3dbff123fe4d446bdb4fa52d8405b7591df523648ee08eb41c859388ca62eb5e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:40:03,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:40:03,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:40:03,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:40:03,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:40:03,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:40:03,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:40:03,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:40:03,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:40:03,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:40:03,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:40:03,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:40:03,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:40:03,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:40:03,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:40:03,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:40:04,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:40:04,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:40:04,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:40:04,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:40:04,007 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:40:04,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:40:04,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:40:04,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:40:04,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:40:04,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:40:04,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:40:04,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:40:04,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:40:04,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:40:04,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:40:04,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:40:04,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:40:04,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:40:04,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:40:04,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:40:04,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:40:04,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:40:04,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:40:04,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:40:04,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:40:04,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:40:04,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 19:40:04,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:40:04,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:40:04,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:40:04,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:40:04,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:40:04,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:40:04,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:40:04,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:40:04,053 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:40:04,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:40:04,054 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:40:04,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:40:04,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:40:04,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:40:04,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:40:04,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:40:04,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 19:40:04,064 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 19:40:04,065 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 19:40:04,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:40:04,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:40:04,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:40:04,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:40:04,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:40:04,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:40:04,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:40:04,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:40:04,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:40:04,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:40:04,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:40:04,067 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 19:40:04,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 19:40:04,067 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:40:04,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:40:04,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:40:04,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 19:40:04,068 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dbff123fe4d446bdb4fa52d8405b7591df523648ee08eb41c859388ca62eb5e [2022-07-19 19:40:04,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:40:04,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:40:04,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:40:04,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:40:04,358 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:40:04,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_2.i [2022-07-19 19:40:04,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cc21e3b/2ac21a6d052c4f9bb45cde049b3cb2e1/FLAG2de60170d [2022-07-19 19:40:04,776 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:40:04,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i [2022-07-19 19:40:04,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cc21e3b/2ac21a6d052c4f9bb45cde049b3cb2e1/FLAG2de60170d [2022-07-19 19:40:04,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cc21e3b/2ac21a6d052c4f9bb45cde049b3cb2e1 [2022-07-19 19:40:04,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:40:04,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:40:04,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:40:04,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:40:04,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:40:04,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:40:04" (1/1) ... [2022-07-19 19:40:04,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248b1415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:04, skipping insertion in model container [2022-07-19 19:40:04,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:40:04" (1/1) ... [2022-07-19 19:40:04,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:40:04,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:40:04,942 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i[1226,1239] [2022-07-19 19:40:04,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i[2820,2833] [2022-07-19 19:40:04,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:40:05,007 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:40:05,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i[1226,1239] [2022-07-19 19:40:05,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_2.i[2820,2833] [2022-07-19 19:40:05,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:40:05,047 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:40:05,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05 WrapperNode [2022-07-19 19:40:05,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:40:05,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:40:05,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:40:05,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:40:05,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,088 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-19 19:40:05,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:40:05,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:40:05,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:40:05,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:40:05,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:40:05,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:40:05,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:40:05,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:40:05,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (1/1) ... [2022-07-19 19:40:05,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:40:05,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:40:05,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 19:40:05,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 19:40:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:40:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 19:40:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:40:05,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:40:05,291 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:40:05,292 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:40:11,025 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:40:11,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:40:11,029 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 19:40:11,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:40:11 BoogieIcfgContainer [2022-07-19 19:40:11,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:40:11,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:40:11,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:40:11,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:40:11,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:40:04" (1/3) ... [2022-07-19 19:40:11,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dffa76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:40:11, skipping insertion in model container [2022-07-19 19:40:11,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:40:05" (2/3) ... [2022-07-19 19:40:11,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dffa76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:40:11, skipping insertion in model container [2022-07-19 19:40:11,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:40:11" (3/3) ... [2022-07-19 19:40:11,034 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_2.i [2022-07-19 19:40:11,049 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:40:11,049 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:40:11,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:40:11,101 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c8f549d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@16be5d82 [2022-07-19 19:40:11,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:40:11,104 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) [2022-07-19 19:40:11,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 19:40:11,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:40:11,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:40:11,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:40:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:40:11,112 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-19 19:40:11,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 19:40:11,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141968568] [2022-07-19 19:40:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:40:11,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 19:40:11,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 19:40:11,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 19:40:11,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 19:40:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:40:12,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 19:40:12,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:40:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:40:12,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:40:12,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 19:40:12,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141968568] [2022-07-19 19:40:12,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141968568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:40:12,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:40:12,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 19:40:12,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271191199] [2022-07-19 19:40:12,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:40:12,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 19:40:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 19:40:12,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 19:40:12,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:40:12,072 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) [2022-07-19 19:40:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:40:12,085 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-19 19:40:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 19:40:12,086 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 [2022-07-19 19:40:12,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:40:12,090 INFO L225 Difference]: With dead ends: 47 [2022-07-19 19:40:12,090 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 19:40:12,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:40:12,096 INFO L413 NwaCegarLoop]: 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 [2022-07-19 19:40:12,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:40:12,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 19:40:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 19:40:12,117 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) [2022-07-19 19:40:12,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-19 19:40:12,119 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-19 19:40:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:40:12,119 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-19 19:40:12,120 INFO L496 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) [2022-07-19 19:40:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-19 19:40:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 19:40:12,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:40:12,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:40:12,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 19:40:12,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 19:40:12,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:40:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:40:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-19 19:40:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 19:40:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765988103] [2022-07-19 19:40:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:40:12,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 19:40:12,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 19:40:12,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 19:40:12,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process