./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_4+newton_1_7.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 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:09:33,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:09:33,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:09:33,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:09:33,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:09:33,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:09:33,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:09:33,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:09:33,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:09:33,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:09:33,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:09:33,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:09:33,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:09:33,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:09:33,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:09:33,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:09:33,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:09:33,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:09:33,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:09:33,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:09:33,427 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:09:33,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:09:33,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:09:33,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:09:33,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:09:33,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:09:33,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:09:33,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:09:33,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:09:33,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:09:33,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:09:33,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:09:33,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:09:33,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:09:33,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:09:33,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:09:33,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:09:33,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:09:33,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:09:33,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:09:33,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:09:33,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:09:33,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:09:33,479 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:09:33,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:09:33,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:09:33,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:09:33,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:09:33,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:09:33,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:09:33,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:09:33,482 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:09:33,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:09:33,483 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:09:33,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:09:33,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:09:33,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:09:33,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:09:33,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:09:33,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:09:33,485 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:09:33,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:09:33,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:09:33,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:09:33,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:09:33,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:09:33,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:09:33,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:09:33,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:09:33,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:09:33,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:09:33,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:09:33,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:09:33,488 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:09:33,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:09:33,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:09:33,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 [2022-07-22 20:09:33,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:09:33,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:09:33,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:09:33,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:09:33,713 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:09:33,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2022-07-22 20:09:33,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05bfbe80/9870d68646dd4b05a48642648112b331/FLAG8c560af88 [2022-07-22 20:09:34,131 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:09:34,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2022-07-22 20:09:34,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05bfbe80/9870d68646dd4b05a48642648112b331/FLAG8c560af88 [2022-07-22 20:09:34,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05bfbe80/9870d68646dd4b05a48642648112b331 [2022-07-22 20:09:34,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:09:34,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:09:34,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:09:34,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:09:34,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:09:34,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33fc4e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34, skipping insertion in model container [2022-07-22 20:09:34,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:09:34,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:09:34,316 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_4+newton_1_7.i[1224,1237] [2022-07-22 20:09:34,332 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_4+newton_1_7.i[2806,2819] [2022-07-22 20:09:34,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:09:34,339 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:09:34,348 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_4+newton_1_7.i[1224,1237] [2022-07-22 20:09:34,356 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_4+newton_1_7.i[2806,2819] [2022-07-22 20:09:34,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:09:34,367 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:09:34,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34 WrapperNode [2022-07-22 20:09:34,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:09:34,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:09:34,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:09:34,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:09:34,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,396 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2022-07-22 20:09:34,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:09:34,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:09:34,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:09:34,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:09:34,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:09:34,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:09:34,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:09:34,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:09:34,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (1/1) ... [2022-07-22 20:09:34,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:09:34,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:09:34,448 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) [2022-07-22 20:09:34,449 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 [2022-07-22 20:09:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:09:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:09:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:09:34,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:09:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 20:09:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 20:09:34,521 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:09:34,522 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:09:34,622 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:09:34,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:09:34,628 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 20:09:34,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:09:34 BoogieIcfgContainer [2022-07-22 20:09:34,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:09:34,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:09:34,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:09:34,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:09:34,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:09:34" (1/3) ... [2022-07-22 20:09:34,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cddb019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:09:34, skipping insertion in model container [2022-07-22 20:09:34,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:34" (2/3) ... [2022-07-22 20:09:34,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cddb019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:09:34, skipping insertion in model container [2022-07-22 20:09:34,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:09:34" (3/3) ... [2022-07-22 20:09:34,636 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_7.i [2022-07-22 20:09:34,645 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:09:34,645 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:09:34,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:09:34,691 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@12078b96, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2b00c36b [2022-07-22 20:09:34,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:09:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 20:09:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 20:09:34,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:09:34,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:09:34,701 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:09:34,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:09:34,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-07-22 20:09:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:09:34,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945622011] [2022-07-22 20:09:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:09:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:09:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:09:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:09:34,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:09:34,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945622011] [2022-07-22 20:09:34,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945622011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:09:34,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:09:34,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:09:34,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638300934] [2022-07-22 20:09:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:09:34,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:09:34,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:09:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:09:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:09:34,853 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2022-07-22 20:09:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:09:34,887 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-07-22 20:09:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:09:34,889 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 [2022-07-22 20:09:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:09:34,896 INFO L225 Difference]: With dead ends: 57 [2022-07-22 20:09:34,896 INFO L226 Difference]: Without dead ends: 26 [2022-07-22 20:09:34,899 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 [2022-07-22 20:09:34,902 INFO L413 NwaCegarLoop]: 40 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, 40 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 [2022-07-22 20:09:34,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:09:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-22 20:09:34,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-22 20:09:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 20:09:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-07-22 20:09:34,940 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-07-22 20:09:34,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:09:34,940 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-07-22 20:09:34,940 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) [2022-07-22 20:09:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-07-22 20:09:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 20:09:34,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:09:34,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:09:34,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:09:34,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:09:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:09:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-07-22 20:09:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:09:34,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057795668] [2022-07-22 20:09:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:09:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:09:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:09:34,984 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 20:09:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:09:35,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 20:09:35,024 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 20:09:35,025 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 20:09:35,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 20:09:35,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:09:35,034 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 20:09:35,041 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 20:09:35,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 08:09:35 BoogieIcfgContainer [2022-07-22 20:09:35,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 20:09:35,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 20:09:35,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 20:09:35,068 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 20:09:35,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:09:34" (3/4) ... [2022-07-22 20:09:35,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 20:09:35,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 20:09:35,073 INFO L158 Benchmark]: Toolchain (without parser) took 920.79ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 80.4MB in the beginning and 100.1MB in the end (delta: -19.7MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2022-07-22 20:09:35,074 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 111.1MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:09:35,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.82ms. Allocated memory is still 111.1MB. Free memory was 80.2MB in the beginning and 84.8MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 20:09:35,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.44ms. Allocated memory is still 111.1MB. Free memory was 84.5MB in the beginning and 82.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:09:35,079 INFO L158 Benchmark]: Boogie Preprocessor took 24.05ms. Allocated memory is still 111.1MB. Free memory was 82.7MB in the beginning and 81.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:09:35,080 INFO L158 Benchmark]: RCFGBuilder took 208.05ms. Allocated memory is still 111.1MB. Free memory was 81.6MB in the beginning and 71.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 20:09:35,080 INFO L158 Benchmark]: TraceAbstraction took 435.53ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 70.5MB in the beginning and 100.1MB in the end (delta: -29.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:09:35,080 INFO L158 Benchmark]: Witness Printer took 3.81ms. Allocated memory is still 134.2MB. Free memory is still 100.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:09:35,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 111.1MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.82ms. Allocated memory is still 111.1MB. Free memory was 80.2MB in the beginning and 84.8MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.44ms. Allocated memory is still 111.1MB. Free memory was 84.5MB in the beginning and 82.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.05ms. Allocated memory is still 111.1MB. Free memory was 82.7MB in the beginning and 81.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 208.05ms. Allocated memory is still 111.1MB. Free memory was 81.6MB in the beginning and 71.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 435.53ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 70.5MB in the beginning and 100.1MB in the end (delta: -29.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.81ms. Allocated memory is still 134.2MB. Free memory is still 100.1MB. 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: 109]: 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 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L100] CALL, EXPR f(IN) [L87] 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] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] 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] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=49] [L109] 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 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 40 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, 40 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=33occurred 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 [2022-07-22 20:09:35,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_4+newton_1_7.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 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:09:36,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:09:36,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:09:36,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:09:36,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:09:36,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:09:36,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:09:36,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:09:36,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:09:36,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:09:36,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:09:36,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:09:36,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:09:36,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:09:36,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:09:36,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:09:36,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:09:36,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:09:36,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:09:36,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:09:36,996 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:09:36,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:09:36,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:09:37,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:09:37,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:09:37,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:09:37,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:09:37,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:09:37,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:09:37,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:09:37,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:09:37,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:09:37,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:09:37,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:09:37,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:09:37,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:09:37,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:09:37,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:09:37,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:09:37,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:09:37,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:09:37,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:09:37,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 20:09:37,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:09:37,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:09:37,052 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:09:37,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:09:37,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:09:37,053 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:09:37,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:09:37,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:09:37,054 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:09:37,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:09:37,055 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:09:37,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:09:37,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:09:37,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:09:37,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:09:37,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:09:37,057 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 20:09:37,057 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 20:09:37,057 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 20:09:37,057 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:09:37,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:09:37,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:09:37,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:09:37,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:09:37,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:09:37,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:09:37,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:09:37,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:09:37,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:09:37,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:09:37,060 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 20:09:37,060 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 20:09:37,060 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:09:37,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:09:37,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:09:37,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 20:09:37,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 [2022-07-22 20:09:37,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:09:37,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:09:37,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:09:37,407 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:09:37,408 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:09:37,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2022-07-22 20:09:37,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df95379b/dee786ae11cb4a96a523970a36ace016/FLAG505bb70a3 [2022-07-22 20:09:37,882 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:09:37,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2022-07-22 20:09:37,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df95379b/dee786ae11cb4a96a523970a36ace016/FLAG505bb70a3 [2022-07-22 20:09:37,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df95379b/dee786ae11cb4a96a523970a36ace016 [2022-07-22 20:09:37,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:09:37,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:09:37,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:09:37,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:09:37,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:09:37,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:09:37" (1/1) ... [2022-07-22 20:09:37,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d507299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:37, skipping insertion in model container [2022-07-22 20:09:37,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:09:37" (1/1) ... [2022-07-22 20:09:37,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:09:37,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:09:38,097 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_4+newton_1_7.i[1224,1237] [2022-07-22 20:09:38,140 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_4+newton_1_7.i[2806,2819] [2022-07-22 20:09:38,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:09:38,180 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:09:38,194 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_4+newton_1_7.i[1224,1237] [2022-07-22 20:09:38,215 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_4+newton_1_7.i[2806,2819] [2022-07-22 20:09:38,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:09:38,232 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:09:38,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38 WrapperNode [2022-07-22 20:09:38,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:09:38,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:09:38,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:09:38,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:09:38,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,279 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2022-07-22 20:09:38,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:09:38,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:09:38,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:09:38,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:09:38,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:09:38,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:09:38,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:09:38,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:09:38,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (1/1) ... [2022-07-22 20:09:38,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:09:38,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:09:38,356 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) [2022-07-22 20:09:38,379 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 [2022-07-22 20:09:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:09:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 20:09:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:09:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:09:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 20:09:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 20:09:38,466 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:09:38,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:09:44,428 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:09:44,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:09:44,433 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 20:09:44,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:09:44 BoogieIcfgContainer [2022-07-22 20:09:44,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:09:44,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:09:44,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:09:44,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:09:44,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:09:37" (1/3) ... [2022-07-22 20:09:44,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c49a783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:09:44, skipping insertion in model container [2022-07-22 20:09:44,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:09:38" (2/3) ... [2022-07-22 20:09:44,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c49a783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:09:44, skipping insertion in model container [2022-07-22 20:09:44,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:09:44" (3/3) ... [2022-07-22 20:09:44,441 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_7.i [2022-07-22 20:09:44,453 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:09:44,453 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:09:44,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:09:44,494 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@16dfb20f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@50c3b15e [2022-07-22 20:09:44,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:09:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 20:09:44,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 20:09:44,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:09:44,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:09:44,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:09:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:09:44,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-07-22 20:09:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 20:09:44,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273102020] [2022-07-22 20:09:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:09:44,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 20:09:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 20:09:44,531 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) [2022-07-22 20:09:44,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 20:09:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:09:45,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 20:09:45,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:09:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:09:45,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:09:45,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 20:09:45,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273102020] [2022-07-22 20:09:45,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273102020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:09:45,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:09:45,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:09:45,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453115691] [2022-07-22 20:09:45,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:09:45,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:09:45,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 20:09:45,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:09:45,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:09:45,433 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2022-07-22 20:09:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:09:45,464 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-07-22 20:09:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:09:45,468 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 [2022-07-22 20:09:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:09:45,474 INFO L225 Difference]: With dead ends: 57 [2022-07-22 20:09:45,474 INFO L226 Difference]: Without dead ends: 26 [2022-07-22 20:09:45,477 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 [2022-07-22 20:09:45,480 INFO L413 NwaCegarLoop]: 40 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, 40 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 [2022-07-22 20:09:45,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:09:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-22 20:09:45,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-22 20:09:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 20:09:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-07-22 20:09:45,515 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-07-22 20:09:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:09:45,515 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-07-22 20:09:45,516 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) [2022-07-22 20:09:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-07-22 20:09:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 20:09:45,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:09:45,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:09:45,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:09:45,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 20:09:45,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:09:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:09:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-07-22 20:09:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 20:09:45,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248059768] [2022-07-22 20:09:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:09:45,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 20:09:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 20:09:45,735 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) [2022-07-22 20:09:45,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 20:10:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:10:08,241 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 20:10:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:10:15,641 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-22 20:10:15,641 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 20:10:15,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 20:10:15,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 20:10:15,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:10:15,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 20:10:15,848 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 20:10:15,851 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 20:10:15,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 08:10:15 BoogieIcfgContainer [2022-07-22 20:10:15,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 20:10:15,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 20:10:15,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 20:10:15,885 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 20:10:15,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:09:44" (3/4) ... [2022-07-22 20:10:15,888 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 20:10:15,940 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 20:10:15,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 20:10:15,943 INFO L158 Benchmark]: Toolchain (without parser) took 38029.67ms. Allocated memory is still 56.6MB. Free memory was 40.9MB in the beginning and 26.6MB in the end (delta: 14.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2022-07-22 20:10:15,944 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 46.1MB. Free memory was 28.1MB in the beginning and 28.1MB in the end (delta: 32.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:10:15,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.97ms. Allocated memory is still 56.6MB. Free memory was 40.8MB in the beginning and 37.6MB in the end (delta: 3.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 20:10:15,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.77ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 35.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:10:15,945 INFO L158 Benchmark]: Boogie Preprocessor took 46.72ms. Allocated memory is still 56.6MB. Free memory was 35.7MB in the beginning and 34.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:10:15,946 INFO L158 Benchmark]: RCFGBuilder took 6107.11ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 36.4MB in the end (delta: -2.2MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-07-22 20:10:15,946 INFO L158 Benchmark]: TraceAbstraction took 31447.09ms. Allocated memory is still 56.6MB. Free memory was 35.9MB in the beginning and 28.5MB in the end (delta: 7.4MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-07-22 20:10:15,946 INFO L158 Benchmark]: Witness Printer took 57.64ms. Allocated memory is still 56.6MB. Free memory was 28.5MB in the beginning and 26.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:10:15,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 46.1MB. Free memory was 28.1MB in the beginning and 28.1MB in the end (delta: 32.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.97ms. Allocated memory is still 56.6MB. Free memory was 40.8MB in the beginning and 37.6MB in the end (delta: 3.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.77ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 35.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.72ms. Allocated memory is still 56.6MB. Free memory was 35.7MB in the beginning and 34.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6107.11ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 36.4MB in the end (delta: -2.2MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 31447.09ms. Allocated memory is still 56.6MB. Free memory was 35.9MB in the beginning and 28.5MB in the end (delta: 7.4MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Witness Printer took 57.64ms. Allocated memory is still 56.6MB. Free memory was 28.5MB in the beginning and 26.6MB in the end (delta: 1.9MB). 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: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L100] CALL, EXPR f(IN) [L87] 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)=-1.0555998086929321, \result=-0.870771050453186, x=-1.0555998086929321] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.0555998086929321, \result=0.496511310338974, x=-1.0555998086929321] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-1.0555998086929321, x=0.6981791257858276] [L109] reach_error() VAL [IN=-1.0555998086929321, x=0.6981791257858276] - 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 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 31.4s, 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, 40 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, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 23.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2022-07-22 20:10:16,096 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE