./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_5.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 e1fa1a55806359256811455041f4c560095cd24f578da9545b403f8eeca2876a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:51:35,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:51:35,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:51:35,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:51:35,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:51:35,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:51:35,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:51:35,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:51:35,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:51:35,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:51:35,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:51:35,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:51:35,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:51:35,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:51:35,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:51:35,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:51:35,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:51:35,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:51:35,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:51:35,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:51:35,696 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:51:35,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:51:35,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:51:35,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:51:35,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:51:35,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:51:35,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:51:35,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:51:35,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:51:35,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:51:35,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:51:35,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:51:35,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:51:35,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:51:35,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:51:35,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:51:35,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:51:35,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:51:35,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:51:35,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:51:35,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:51:35,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:51:35,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:51:35,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:51:35,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:51:35,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:51:35,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:51:35,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:51:35,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:51:35,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:51:35,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:51:35,741 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:51:35,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:51:35,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:51:35,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:51:35,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:51:35,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:51:35,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:51:35,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:51:35,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:51:35,743 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:51:35,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:51:35,743 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:51:35,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:51:35,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:51:35,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:51:35,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:51:35,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:51:35,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:51:35,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:51:35,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:51:35,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:51:35,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:51:35,745 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:51:35,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:51:35,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:51:35,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1fa1a55806359256811455041f4c560095cd24f578da9545b403f8eeca2876a [2022-07-12 08:51:35,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:51:35,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:51:35,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:51:35,950 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:51:35,950 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:51:35,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_5.i [2022-07-12 08:51:36,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea90e25e/67c7a12c827f4ef392e5fdcf049d4211/FLAGb3939eb91 [2022-07-12 08:51:36,348 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:51:36,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_5.i [2022-07-12 08:51:36,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea90e25e/67c7a12c827f4ef392e5fdcf049d4211/FLAGb3939eb91 [2022-07-12 08:51:36,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea90e25e/67c7a12c827f4ef392e5fdcf049d4211 [2022-07-12 08:51:36,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:51:36,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:51:36,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:51:36,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:51:36,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:51:36,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:51:36" (1/1) ... [2022-07-12 08:51:36,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605dd6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:36, skipping insertion in model container [2022-07-12 08:51:36,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:51:36" (1/1) ... [2022-07-12 08:51:36,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:51:36,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:51:36,957 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_5.i[1224,1237] [2022-07-12 08:51:36,992 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_5.i[2806,2819] [2022-07-12 08:51:36,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:51:37,003 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:51:37,017 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_5.i[1224,1237] [2022-07-12 08:51:37,029 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_5.i[2806,2819] [2022-07-12 08:51:37,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:51:37,039 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:51:37,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37 WrapperNode [2022-07-12 08:51:37,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:51:37,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:51:37,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:51:37,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:51:37,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,079 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2022-07-12 08:51:37,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:51:37,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:51:37,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:51:37,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:51:37,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:51:37,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:51:37,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:51:37,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:51:37,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (1/1) ... [2022-07-12 08:51:37,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:51:37,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:51:37,135 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) [2022-07-12 08:51:37,136 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 [2022-07-12 08:51:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:51:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:51:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:51:37,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:51:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 08:51:37,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 08:51:37,206 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:51:37,207 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:51:37,292 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:51:37,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:51:37,296 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 08:51:37,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:51:37 BoogieIcfgContainer [2022-07-12 08:51:37,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:51:37,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:51:37,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:51:37,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:51:37,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:51:36" (1/3) ... [2022-07-12 08:51:37,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d188b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:51:37, skipping insertion in model container [2022-07-12 08:51:37,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:37" (2/3) ... [2022-07-12 08:51:37,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d188b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:51:37, skipping insertion in model container [2022-07-12 08:51:37,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:51:37" (3/3) ... [2022-07-12 08:51:37,309 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_5.i [2022-07-12 08:51:37,318 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:51:37,319 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:51:37,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:51:37,362 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@6bf75b5b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d69fef9 [2022-07-12 08:51:37,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:51:37,367 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) [2022-07-12 08:51:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:51:37,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:51:37,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:51:37,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:51:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:51:37,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-07-12 08:51:37,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:51:37,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131755145] [2022-07-12 08:51:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:51:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:51:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:51:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:51:37,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:51:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131755145] [2022-07-12 08:51:37,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131755145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:51:37,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:51:37,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 08:51:37,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10022754] [2022-07-12 08:51:37,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:51:37,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 08:51:37,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:51:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 08:51:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:51:37,495 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) [2022-07-12 08:51:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:51:37,512 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-07-12 08:51:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 08:51:37,514 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 [2022-07-12 08:51:37,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:51:37,518 INFO L225 Difference]: With dead ends: 57 [2022-07-12 08:51:37,518 INFO L226 Difference]: Without dead ends: 26 [2022-07-12 08:51:37,520 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 [2022-07-12 08:51:37,523 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 [2022-07-12 08:51:37,524 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] [2022-07-12 08:51:37,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-12 08:51:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-12 08:51:37,547 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) [2022-07-12 08:51:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-07-12 08:51:37,549 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-07-12 08:51:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:51:37,549 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-07-12 08:51:37,549 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) [2022-07-12 08:51:37,549 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-07-12 08:51:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:51:37,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:51:37,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:51:37,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:51:37,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:51:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:51:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-07-12 08:51:37,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:51:37,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57453449] [2022-07-12 08:51:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:51:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:51:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:51:37,565 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 08:51:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:51:37,584 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 08:51:37,584 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 08:51:37,585 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 08:51:37,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 08:51:37,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:51:37,589 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 08:51:37,596 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 08:51:37,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 08:51:37 BoogieIcfgContainer [2022-07-12 08:51:37,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 08:51:37,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 08:51:37,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 08:51:37,611 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 08:51:37,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:51:37" (3/4) ... [2022-07-12 08:51:37,613 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 08:51:37,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 08:51:37,614 INFO L158 Benchmark]: Toolchain (without parser) took 811.64ms. Allocated memory is still 107.0MB. Free memory was 48.2MB in the beginning and 82.3MB in the end (delta: -34.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:51:37,614 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:51:37,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.52ms. Allocated memory is still 107.0MB. Free memory was 48.0MB in the beginning and 81.6MB in the end (delta: -33.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2022-07-12 08:51:37,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.27ms. Allocated memory is still 107.0MB. Free memory was 81.6MB in the beginning and 79.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 08:51:37,615 INFO L158 Benchmark]: Boogie Preprocessor took 30.57ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 78.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:51:37,616 INFO L158 Benchmark]: RCFGBuilder took 185.68ms. Allocated memory is still 107.0MB. Free memory was 78.5MB in the beginning and 67.5MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 08:51:37,616 INFO L158 Benchmark]: TraceAbstraction took 312.49ms. Allocated memory is still 107.0MB. Free memory was 67.1MB in the beginning and 82.9MB in the end (delta: -15.9MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2022-07-12 08:51:37,616 INFO L158 Benchmark]: Witness Printer took 2.41ms. Allocated memory is still 107.0MB. Free memory was 82.9MB in the beginning and 82.3MB in the end (delta: 631.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:51:37,618 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 107.0MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.52ms. Allocated memory is still 107.0MB. Free memory was 48.0MB in the beginning and 81.6MB in the end (delta: -33.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.27ms. Allocated memory is still 107.0MB. Free memory was 81.6MB in the beginning and 79.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.57ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 78.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 185.68ms. Allocated memory is still 107.0MB. Free memory was 78.5MB in the beginning and 67.5MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 312.49ms. Allocated memory is still 107.0MB. Free memory was 67.1MB in the beginning and 82.9MB in the end (delta: -15.9MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * Witness Printer took 2.41ms. Allocated memory is still 107.0MB. Free memory was 82.9MB in the beginning and 82.3MB in the end (delta: 631.0kB). 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 > -1.0f && IN < 1.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [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: 0.2s, 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 [2022-07-12 08:51:37,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_4+newton_1_5.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 e1fa1a55806359256811455041f4c560095cd24f578da9545b403f8eeca2876a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:51:39,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:51:39,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:51:39,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:51:39,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:51:39,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:51:39,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:51:39,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:51:39,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:51:39,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:51:39,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:51:39,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:51:39,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:51:39,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:51:39,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:51:39,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:51:39,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:51:39,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:51:39,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:51:39,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:51:39,326 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:51:39,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:51:39,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:51:39,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:51:39,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:51:39,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:51:39,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:51:39,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:51:39,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:51:39,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:51:39,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:51:39,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:51:39,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:51:39,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:51:39,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:51:39,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:51:39,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:51:39,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:51:39,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:51:39,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:51:39,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:51:39,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:51:39,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 08:51:39,371 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:51:39,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:51:39,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:51:39,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:51:39,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:51:39,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:51:39,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:51:39,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:51:39,373 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:51:39,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:51:39,374 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:51:39,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:51:39,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:51:39,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:51:39,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:51:39,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:51:39,379 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 08:51:39,379 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 08:51:39,379 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 08:51:39,379 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:51:39,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:51:39,380 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:51:39,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:51:39,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:51:39,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:51:39,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:51:39,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:51:39,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:51:39,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:51:39,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:51:39,381 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 08:51:39,382 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 08:51:39,382 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:51:39,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:51:39,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:51:39,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 08:51:39,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1fa1a55806359256811455041f4c560095cd24f578da9545b403f8eeca2876a [2022-07-12 08:51:39,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:51:39,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:51:39,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:51:39,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:51:39,644 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:51:39,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_5.i [2022-07-12 08:51:39,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c0d6dce8/9c54757fa7b44b25bd35e1fe5f35f285/FLAGce875cb29 [2022-07-12 08:51:40,081 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:51:40,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_5.i [2022-07-12 08:51:40,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c0d6dce8/9c54757fa7b44b25bd35e1fe5f35f285/FLAGce875cb29 [2022-07-12 08:51:40,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c0d6dce8/9c54757fa7b44b25bd35e1fe5f35f285 [2022-07-12 08:51:40,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:51:40,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:51:40,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:51:40,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:51:40,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:51:40,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1bce6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40, skipping insertion in model container [2022-07-12 08:51:40,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:51:40,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:51:40,269 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_5.i[1224,1237] [2022-07-12 08:51:40,318 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_5.i[2806,2819] [2022-07-12 08:51:40,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:51:40,328 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:51:40,341 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_5.i[1224,1237] [2022-07-12 08:51:40,361 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_5.i[2806,2819] [2022-07-12 08:51:40,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:51:40,382 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:51:40,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40 WrapperNode [2022-07-12 08:51:40,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:51:40,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:51:40,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:51:40,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:51:40,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,431 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2022-07-12 08:51:40,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:51:40,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:51:40,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:51:40,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:51:40,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:51:40,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:51:40,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:51:40,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:51:40,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (1/1) ... [2022-07-12 08:51:40,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:51:40,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:51:40,504 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) [2022-07-12 08:51:40,513 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 [2022-07-12 08:51:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:51:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 08:51:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:51:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:51:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 08:51:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 08:51:40,592 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:51:40,593 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:51:47,425 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:51:47,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:51:47,433 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 08:51:47,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:51:47 BoogieIcfgContainer [2022-07-12 08:51:47,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:51:47,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:51:47,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:51:47,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:51:47,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:51:40" (1/3) ... [2022-07-12 08:51:47,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d671386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:51:47, skipping insertion in model container [2022-07-12 08:51:47,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:51:40" (2/3) ... [2022-07-12 08:51:47,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d671386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:51:47, skipping insertion in model container [2022-07-12 08:51:47,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:51:47" (3/3) ... [2022-07-12 08:51:47,441 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_5.i [2022-07-12 08:51:47,450 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:51:47,451 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:51:47,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:51:47,490 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@3c02559c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7297a819 [2022-07-12 08:51:47,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:51:47,493 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) [2022-07-12 08:51:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:51:47,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:51:47,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:51:47,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:51:47,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:51:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-07-12 08:51:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 08:51:47,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763257500] [2022-07-12 08:51:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:51:47,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 08:51:47,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 08:51:47,514 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) [2022-07-12 08:51:47,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 08:51:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:51:48,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 08:51:48,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:51:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:51:48,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:51:48,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 08:51:48,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763257500] [2022-07-12 08:51:48,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763257500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:51:48,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:51:48,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 08:51:48,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165448336] [2022-07-12 08:51:48,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:51:48,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 08:51:48,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 08:51:48,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 08:51:48,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:51:48,420 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) [2022-07-12 08:51:48,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:51:48,437 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-07-12 08:51:48,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 08:51:48,438 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 [2022-07-12 08:51:48,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:51:48,442 INFO L225 Difference]: With dead ends: 57 [2022-07-12 08:51:48,443 INFO L226 Difference]: Without dead ends: 26 [2022-07-12 08:51:48,445 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 [2022-07-12 08:51:48,447 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 [2022-07-12 08:51:48,447 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] [2022-07-12 08:51:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-12 08:51:48,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-12 08:51:48,468 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) [2022-07-12 08:51:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-07-12 08:51:48,469 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-07-12 08:51:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:51:48,470 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-07-12 08:51:48,470 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) [2022-07-12 08:51:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-07-12 08:51:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:51:48,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:51:48,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:51:48,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 08:51:48,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 08:51:48,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:51:48,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:51:48,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-07-12 08:51:48,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 08:51:48,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357201402] [2022-07-12 08:51:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:51:48,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 08:51:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 08:51:48,694 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) [2022-07-12 08:51:48,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 08:53:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:53:41,014 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 08:53:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:53:57,142 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 08:53:57,142 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 08:53:57,143 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 08:53:57,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 08:53:57,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-12 08:53:57,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 08:53:57,352 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 08:53:57,355 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 08:53:57,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 08:53:57 BoogieIcfgContainer [2022-07-12 08:53:57,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 08:53:57,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 08:53:57,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 08:53:57,377 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 08:53:57,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:51:47" (3/4) ... [2022-07-12 08:53:57,379 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 08:53:57,421 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 08:53:57,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 08:53:57,424 INFO L158 Benchmark]: Toolchain (without parser) took 137317.41ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.6MB in the beginning and 49.7MB in the end (delta: -20.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:53:57,424 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 52.4MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:53:57,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.59ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.4MB in the beginning and 53.0MB in the end (delta: -23.6MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-07-12 08:53:57,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.19ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 51.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 08:53:57,426 INFO L158 Benchmark]: Boogie Preprocessor took 45.61ms. Allocated memory is still 71.3MB. Free memory was 51.1MB in the beginning and 49.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 08:53:57,426 INFO L158 Benchmark]: RCFGBuilder took 6955.56ms. Allocated memory is still 71.3MB. Free memory was 49.6MB in the beginning and 53.6MB in the end (delta: -4.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-12 08:53:57,426 INFO L158 Benchmark]: TraceAbstraction took 129940.87ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 51.3MB in the end (delta: 1.7MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2022-07-12 08:53:57,426 INFO L158 Benchmark]: Witness Printer took 46.72ms. Allocated memory is still 71.3MB. Free memory was 51.3MB in the beginning and 49.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 08:53:57,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 52.4MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.59ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.4MB in the beginning and 53.0MB in the end (delta: -23.6MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.19ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 51.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.61ms. Allocated memory is still 71.3MB. Free memory was 51.1MB in the beginning and 49.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6955.56ms. Allocated memory is still 71.3MB. Free memory was 49.6MB in the beginning and 53.6MB in the end (delta: -4.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 129940.87ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 51.3MB in the end (delta: 1.7MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Witness Printer took 46.72ms. Allocated memory is still 71.3MB. Free memory was 51.3MB in the beginning and 49.7MB in the end (delta: 1.6MB). 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 > -1.0f && IN < 1.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [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)=-0.909964382648468, \result=-0.7896857261657715, x=-0.909964382648468] [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)=-0.909964382648468, \result=0.6153393983840942, x=-0.909964382648468] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-0.909964382648468, x=0.3733692765235901] [L109] reach_error() VAL [IN=-0.909964382648468, x=0.3733692765235901] - 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: 129.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, 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, 113.1s 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! [2022-07-12 08:53:57,556 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