./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_4.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 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:15:16,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:15:16,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:15:16,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:15:16,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:15:16,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:15:16,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:15:16,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:15:16,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:15:16,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:15:16,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:15:16,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:15:16,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:15:16,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:15:16,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:15:16,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:15:16,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:15:16,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:15:16,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:15:16,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:15:16,729 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:15:16,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:15:16,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:15:16,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:15:16,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:15:16,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:15:16,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:15:16,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:15:16,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:15:16,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:15:16,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:15:16,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:15:16,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:15:16,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:15:16,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:15:16,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:15:16,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:15:16,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:15:16,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:15:16,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:15:16,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:15:16,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:15:16,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:15:16,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:15:16,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:15:16,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:15:16,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:15:16,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:15:16,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:15:16,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:15:16,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:15:16,786 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:15:16,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:15:16,796 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:15:16,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:15:16,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:15:16,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:15:16,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:15:16,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:15:16,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:15:16,797 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:15:16,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:15:16,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:15:16,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:15:16,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:15:16,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:15:16,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:15:16,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:15:16,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:15:16,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:15:16,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:15:16,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:15:16,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:15:16,800 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:15:16,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:15:16,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:15:16,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb [2022-07-21 07:15:17,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:15:17,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:15:17,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:15:17,094 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:15:17,095 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:15:17,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2022-07-21 07:15:17,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19f7dd5b9/8eda6abc62d54411bb56993969949915/FLAG04e62b7e3 [2022-07-21 07:15:17,580 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:15:17,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2022-07-21 07:15:17,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19f7dd5b9/8eda6abc62d54411bb56993969949915/FLAG04e62b7e3 [2022-07-21 07:15:17,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19f7dd5b9/8eda6abc62d54411bb56993969949915 [2022-07-21 07:15:17,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:15:17,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:15:17,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:15:17,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:15:17,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:15:17,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa2faf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17, skipping insertion in model container [2022-07-21 07:15:17,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:15:17,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:15:17,785 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_4.i[1226,1239] [2022-07-21 07:15:17,834 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_4.i[2820,2833] [2022-07-21 07:15:17,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:15:17,849 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:15:17,864 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_4.i[1226,1239] [2022-07-21 07:15:17,883 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_4.i[2820,2833] [2022-07-21 07:15:17,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:15:17,899 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:15:17,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17 WrapperNode [2022-07-21 07:15:17,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:15:17,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:15:17,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:15:17,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:15:17,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,947 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-21 07:15:17,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:15:17,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:15:17,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:15:17,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:15:17,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:15:17,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:15:17,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:15:17,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:15:17,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (1/1) ... [2022-07-21 07:15:17,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:15:18,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:15:18,016 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) [2022-07-21 07:15:18,035 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 [2022-07-21 07:15:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:15:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:15:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:15:18,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:15:18,115 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:15:18,116 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:15:18,293 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:15:18,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:15:18,298 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 07:15:18,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:18 BoogieIcfgContainer [2022-07-21 07:15:18,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:15:18,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:15:18,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:15:18,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:15:18,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:15:17" (1/3) ... [2022-07-21 07:15:18,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597ffa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:18, skipping insertion in model container [2022-07-21 07:15:18,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:17" (2/3) ... [2022-07-21 07:15:18,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597ffa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:18, skipping insertion in model container [2022-07-21 07:15:18,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:18" (3/3) ... [2022-07-21 07:15:18,305 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_4.i [2022-07-21 07:15:18,316 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:15:18,316 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:15:18,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:15:18,369 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@4be2139a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1616ffbd [2022-07-21 07:15:18,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:15:18,378 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) [2022-07-21 07:15:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 07:15:18,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:15:18,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:15:18,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:15:18,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:15:18,392 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-21 07:15:18,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:15:18,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093543147] [2022-07-21 07:15:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:15:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:15:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:15:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:15:18,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:15:18,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093543147] [2022-07-21 07:15:18,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093543147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:15:18,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:15:18,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:15:18,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054016386] [2022-07-21 07:15:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:15:18,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 07:15:18,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:15:18,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 07:15:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 07:15:18,583 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) [2022-07-21 07:15:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:15:18,601 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-21 07:15:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 07:15:18,603 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 [2022-07-21 07:15:18,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:15:18,609 INFO L225 Difference]: With dead ends: 47 [2022-07-21 07:15:18,609 INFO L226 Difference]: Without dead ends: 19 [2022-07-21 07:15:18,611 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 [2022-07-21 07:15:18,616 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 [2022-07-21 07:15:18,618 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] [2022-07-21 07:15:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-21 07:15:18,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-21 07:15:18,638 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) [2022-07-21 07:15:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-21 07:15:18,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-21 07:15:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:15:18,640 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-21 07:15:18,640 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) [2022-07-21 07:15:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-21 07:15:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 07:15:18,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:15:18,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:15:18,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:15:18,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:15:18,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:15:18,643 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-21 07:15:18,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:15:18,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606776391] [2022-07-21 07:15:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:15:18,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:15:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 07:15:18,659 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 07:15:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 07:15:18,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 07:15:18,682 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 07:15:18,684 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 07:15:18,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-21 07:15:18,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:15:18,688 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 07:15:18,691 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 07:15:18,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:15:18 BoogieIcfgContainer [2022-07-21 07:15:18,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 07:15:18,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 07:15:18,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 07:15:18,721 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 07:15:18,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:18" (3/4) ... [2022-07-21 07:15:18,724 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 07:15:18,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 07:15:18,726 INFO L158 Benchmark]: Toolchain (without parser) took 1118.56ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 28.0MB in the end (delta: 14.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-07-21 07:15:18,727 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 44.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 07:15:18,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.48ms. Allocated memory is still 62.9MB. Free memory was 42.7MB in the beginning and 44.6MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 07:15:18,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.66ms. Allocated memory is still 62.9MB. Free memory was 44.6MB in the beginning and 42.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 07:15:18,729 INFO L158 Benchmark]: Boogie Preprocessor took 36.40ms. Allocated memory is still 62.9MB. Free memory was 42.6MB in the beginning and 41.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 07:15:18,729 INFO L158 Benchmark]: RCFGBuilder took 313.77ms. Allocated memory is still 62.9MB. Free memory was 41.5MB in the beginning and 31.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 07:15:18,730 INFO L158 Benchmark]: TraceAbstraction took 418.78ms. Allocated memory is still 62.9MB. Free memory was 30.3MB in the beginning and 28.4MB in the end (delta: 1.9MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-07-21 07:15:18,730 INFO L158 Benchmark]: Witness Printer took 3.50ms. Allocated memory is still 62.9MB. Free memory was 28.4MB in the beginning and 28.0MB in the end (delta: 336.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 07:15:18,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 44.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.48ms. Allocated memory is still 62.9MB. Free memory was 42.7MB in the beginning and 44.6MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.66ms. Allocated memory is still 62.9MB. Free memory was 44.6MB in the beginning and 42.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.40ms. Allocated memory is still 62.9MB. Free memory was 42.6MB in the beginning and 41.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 313.77ms. Allocated memory is still 62.9MB. Free memory was 41.5MB in the beginning and 31.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 418.78ms. Allocated memory is still 62.9MB. Free memory was 30.3MB in the beginning and 28.4MB in the end (delta: 1.9MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Witness Printer took 3.50ms. Allocated memory is still 62.9MB. Free memory was 28.4MB in the beginning and 28.0MB in the end (delta: 336.8kB). 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 > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=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 [2022-07-21 07:15:18,771 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_2+newton_1_4.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 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:15:20,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:15:20,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:15:20,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:15:20,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:15:20,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:15:20,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:15:20,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:15:20,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:15:20,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:15:20,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:15:20,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:15:20,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:15:20,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:15:20,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:15:20,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:15:20,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:15:20,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:15:20,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:15:20,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:15:20,696 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:15:20,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:15:20,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:15:20,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:15:20,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:15:20,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:15:20,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:15:20,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:15:20,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:15:20,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:15:20,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:15:20,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:15:20,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:15:20,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:15:20,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:15:20,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:15:20,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:15:20,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:15:20,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:15:20,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:15:20,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:15:20,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:15:20,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 07:15:20,751 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:15:20,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:15:20,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:15:20,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:15:20,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:15:20,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:15:20,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:15:20,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:15:20,754 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:15:20,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:15:20,761 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:15:20,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:15:20,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:15:20,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:15:20,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:15:20,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:15:20,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 07:15:20,761 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 07:15:20,762 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 07:15:20,762 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:15:20,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:15:20,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:15:20,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:15:20,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:15:20,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:15:20,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:15:20,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:15:20,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:15:20,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:15:20,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:15:20,765 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 07:15:20,765 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 07:15:20,766 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:15:20,766 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:15:20,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:15:20,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 07:15:20,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8791b111097588f326aaf544c3865a21bd353d95ed7e15d093f7405d42c088eb [2022-07-21 07:15:21,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:15:21,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:15:21,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:15:21,129 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:15:21,129 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:15:21,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2022-07-21 07:15:21,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace33e0a5/eac6120a9f514c74b2f26e0312545fc7/FLAG5dbd67b6a [2022-07-21 07:15:21,557 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:15:21,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_4.i [2022-07-21 07:15:21,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace33e0a5/eac6120a9f514c74b2f26e0312545fc7/FLAG5dbd67b6a [2022-07-21 07:15:21,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace33e0a5/eac6120a9f514c74b2f26e0312545fc7 [2022-07-21 07:15:21,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:15:21,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:15:21,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:15:21,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:15:21,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:15:21,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a8cb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21, skipping insertion in model container [2022-07-21 07:15:21,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:15:21,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:15:21,769 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_4.i[1226,1239] [2022-07-21 07:15:21,812 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_4.i[2820,2833] [2022-07-21 07:15:21,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:15:21,829 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:15:21,850 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_4.i[1226,1239] [2022-07-21 07:15:21,861 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_4.i[2820,2833] [2022-07-21 07:15:21,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:15:21,882 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:15:21,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21 WrapperNode [2022-07-21 07:15:21,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:15:21,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:15:21,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:15:21,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:15:21,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,929 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-21 07:15:21,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:15:21,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:15:21,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:15:21,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:15:21,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:15:21,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:15:21,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:15:21,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:15:21,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (1/1) ... [2022-07-21 07:15:21,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:15:21,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:15:22,012 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) [2022-07-21 07:15:22,035 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 [2022-07-21 07:15:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:15:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 07:15:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:15:22,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:15:22,113 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:15:22,114 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:15:27,847 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:15:27,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:15:27,854 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 07:15:27,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:27 BoogieIcfgContainer [2022-07-21 07:15:27,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:15:27,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:15:27,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:15:27,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:15:27,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:15:21" (1/3) ... [2022-07-21 07:15:27,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cae853f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:27, skipping insertion in model container [2022-07-21 07:15:27,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:21" (2/3) ... [2022-07-21 07:15:27,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cae853f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:27, skipping insertion in model container [2022-07-21 07:15:27,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:27" (3/3) ... [2022-07-21 07:15:27,864 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_4.i [2022-07-21 07:15:27,876 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:15:27,876 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:15:27,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:15:27,924 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@5029d5f2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c956668 [2022-07-21 07:15:27,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:15:27,928 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) [2022-07-21 07:15:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 07:15:27,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:15:27,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:15:27,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:15:27,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:15:27,938 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-21 07:15:27,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 07:15:27,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867680444] [2022-07-21 07:15:27,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:15:27,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 07:15:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 07:15:27,953 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) [2022-07-21 07:15:27,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 07:15:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:15:28,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 07:15:28,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:15:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:15:28,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 07:15:28,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 07:15:28,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867680444] [2022-07-21 07:15:28,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867680444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:15:28,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:15:28,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:15:28,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434583907] [2022-07-21 07:15:28,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:15:28,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 07:15:28,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 07:15:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 07:15:29,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 07:15:29,016 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) [2022-07-21 07:15:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:15:29,033 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-21 07:15:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 07:15:29,034 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 [2022-07-21 07:15:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:15:29,044 INFO L225 Difference]: With dead ends: 47 [2022-07-21 07:15:29,044 INFO L226 Difference]: Without dead ends: 19 [2022-07-21 07:15:29,047 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 [2022-07-21 07:15:29,051 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 [2022-07-21 07:15:29,052 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] [2022-07-21 07:15:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-21 07:15:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-21 07:15:29,083 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) [2022-07-21 07:15:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-21 07:15:29,085 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-21 07:15:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:15:29,086 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-21 07:15:29,086 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) [2022-07-21 07:15:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-21 07:15:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 07:15:29,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:15:29,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:15:29,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 07:15:29,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 07:15:29,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:15:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:15:29,300 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-21 07:15:29,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 07:15:29,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491965356] [2022-07-21 07:15:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:15:29,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 07:15:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 07:15:29,304 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) [2022-07-21 07:15:29,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 07:16:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 07:16:40,481 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 07:18:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 07:18:17,324 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-21 07:18:17,324 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 07:18:17,326 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 07:18:17,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-21 07:18:17,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 07:18:17,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 07:18:17,533 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 07:18:17,536 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 07:18:17,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:18:17 BoogieIcfgContainer [2022-07-21 07:18:17,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 07:18:17,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 07:18:17,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 07:18:17,563 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 07:18:17,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:27" (3/4) ... [2022-07-21 07:18:17,565 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 07:18:17,593 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 07:18:17,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 07:18:17,594 INFO L158 Benchmark]: Toolchain (without parser) took 176006.68ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.4MB in the beginning and 42.3MB in the end (delta: -6.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-07-21 07:18:17,595 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 38.9MB in the end (delta: 38.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 07:18:17,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.37ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 38.0MB in the end (delta: -2.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 07:18:17,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.67ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 36.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 07:18:17,596 INFO L158 Benchmark]: Boogie Preprocessor took 50.30ms. Allocated memory is still 56.6MB. Free memory was 36.1MB in the beginning and 34.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 07:18:17,597 INFO L158 Benchmark]: RCFGBuilder took 5874.47ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.7MB in the beginning and 49.7MB in the end (delta: -15.1MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-07-21 07:18:17,597 INFO L158 Benchmark]: TraceAbstraction took 169703.69ms. Allocated memory is still 69.2MB. Free memory was 49.2MB in the beginning and 44.1MB in the end (delta: 5.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2022-07-21 07:18:17,597 INFO L158 Benchmark]: Witness Printer took 30.90ms. Allocated memory is still 69.2MB. Free memory was 44.1MB in the beginning and 42.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 07:18:17,599 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 38.9MB in the end (delta: 38.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.37ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 38.0MB in the end (delta: -2.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.67ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 36.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.30ms. Allocated memory is still 56.6MB. Free memory was 36.1MB in the beginning and 34.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5874.47ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.7MB in the beginning and 49.7MB in the end (delta: -15.1MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 169703.69ms. Allocated memory is still 69.2MB. Free memory was 49.2MB in the beginning and 44.1MB in the end (delta: 5.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Witness Printer took 30.90ms. Allocated memory is still 69.2MB. Free memory was 44.1MB in the beginning and 42.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.6494385004043579, \result=-0.6047585606575012, x=-0.6494385004043579] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.6494385004043579, \result=0.7966310977935791, x=-0.6494385004043579] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.6494385004043579, x=0.1097065806388855] [L102] reach_error() VAL [IN=-0.6494385004043579, x=0.1097065806388855] - 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: 169.6s, 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, 8 GetRequests, 8 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, 72.0s 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! [2022-07-21 07:18:17,752 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