./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_8.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_8.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 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:52:38,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:52:38,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:52:38,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:52:38,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:52:38,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:52:38,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:52:38,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:52:38,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:52:38,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:52:38,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:52:38,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:52:38,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:52:38,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:52:38,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:52:38,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:52:38,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:52:38,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:52:38,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:52:38,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:52:38,987 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:52:38,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:52:38,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:52:38,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:52:38,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:52:38,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:52:38,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:52:38,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:52:38,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:52:38,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:52:38,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:52:38,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:52:38,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:52:38,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:52:38,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:52:39,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:52:39,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:52:39,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:52:39,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:52:39,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:52:39,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:52:39,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:52:39,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:52:39,031 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:52:39,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:52:39,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:52:39,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:52:39,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:52:39,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:52:39,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:52:39,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:52:39,034 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:52:39,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:52:39,035 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:52:39,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:52:39,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:52:39,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:52:39,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:52:39,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:52:39,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:52:39,036 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:52:39,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:52:39,037 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:52:39,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:52:39,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:52:39,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:52:39,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:52:39,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:52:39,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:52:39,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:52:39,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:52:39,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:52:39,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:52:39,039 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:52:39,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:52:39,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:52:39,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2022-07-12 08:52:39,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:52:39,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:52:39,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:52:39,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:52:39,290 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:52:39,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2022-07-12 08:52:39,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f854ba2/80c98facdd824508a28d7a2ce1399372/FLAGb588adbc8 [2022-07-12 08:52:39,795 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:52:39,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2022-07-12 08:52:39,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f854ba2/80c98facdd824508a28d7a2ce1399372/FLAGb588adbc8 [2022-07-12 08:52:39,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f854ba2/80c98facdd824508a28d7a2ce1399372 [2022-07-12 08:52:39,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:52:39,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:52:39,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:52:39,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:52:39,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:52:39,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:52:39" (1/1) ... [2022-07-12 08:52:39,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36dc4452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:39, skipping insertion in model container [2022-07-12 08:52:39,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:52:39" (1/1) ... [2022-07-12 08:52:39,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:52:39,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:52:39,970 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_8.i[1224,1237] [2022-07-12 08:52:39,993 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_8.i[2806,2819] [2022-07-12 08:52:39,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:52:40,000 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:52:40,010 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_8.i[1224,1237] [2022-07-12 08:52:40,019 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_8.i[2806,2819] [2022-07-12 08:52:40,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:52:40,031 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:52:40,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40 WrapperNode [2022-07-12 08:52:40,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:52:40,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:52:40,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:52:40,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:52:40,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,095 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2022-07-12 08:52:40,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:52:40,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:52:40,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:52:40,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:52:40,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:52:40,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:52:40,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:52:40,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:52:40,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (1/1) ... [2022-07-12 08:52:40,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:52:40,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:52:40,168 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 08:52:40,175 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 08:52:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:52:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:52:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:52:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:52:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 08:52:40,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 08:52:40,254 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:52:40,256 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:52:40,436 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:52:40,441 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:52:40,442 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 08:52:40,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:52:40 BoogieIcfgContainer [2022-07-12 08:52:40,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:52:40,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:52:40,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:52:40,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:52:40,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:52:39" (1/3) ... [2022-07-12 08:52:40,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22343a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:52:40, skipping insertion in model container [2022-07-12 08:52:40,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:40" (2/3) ... [2022-07-12 08:52:40,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22343a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:52:40, skipping insertion in model container [2022-07-12 08:52:40,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:52:40" (3/3) ... [2022-07-12 08:52:40,473 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2022-07-12 08:52:40,486 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:52:40,494 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:52:40,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:52:40,593 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@230beebd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23851cb0 [2022-07-12 08:52:40,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:52:40,610 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 08:52:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:52:40,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:52:40,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:52:40,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:52:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:52:40,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-07-12 08:52:40,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:52:40,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221656328] [2022-07-12 08:52:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:52:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:52:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:52:40,767 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 08:52:40,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:52:40,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221656328] [2022-07-12 08:52:40,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221656328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:52:40,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:52:40,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 08:52:40,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699481401] [2022-07-12 08:52:40,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:52:40,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 08:52:40,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:52:40,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 08:52:40,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:52:40,813 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 08:52:40,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:52:40,852 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-07-12 08:52:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 08:52:40,855 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 08:52:40,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:52:40,864 INFO L225 Difference]: With dead ends: 57 [2022-07-12 08:52:40,864 INFO L226 Difference]: Without dead ends: 26 [2022-07-12 08:52:40,869 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 08:52:40,892 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 08:52:40,894 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 08:52:40,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-12 08:52:40,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-12 08:52:40,933 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 08:52:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-07-12 08:52:40,935 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-07-12 08:52:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:52:40,936 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-07-12 08:52:40,936 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 08:52:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-07-12 08:52:40,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:52:40,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:52:40,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:52:40,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:52:40,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:52:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:52:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-07-12 08:52:40,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:52:40,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852571824] [2022-07-12 08:52:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:52:40,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:52:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:52:40,960 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 08:52:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:52:40,984 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 08:52:40,986 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 08:52:40,987 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 08:52:40,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 08:52:40,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:52:40,996 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 08:52:41,001 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 08:52:41,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 08:52:41 BoogieIcfgContainer [2022-07-12 08:52:41,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 08:52:41,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 08:52:41,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 08:52:41,036 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 08:52:41,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:52:40" (3/4) ... [2022-07-12 08:52:41,040 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 08:52:41,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 08:52:41,042 INFO L158 Benchmark]: Toolchain (without parser) took 1219.89ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 48.6MB in the beginning and 77.1MB in the end (delta: -28.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:52:41,043 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:52:41,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.51ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 48.4MB in the beginning and 83.8MB in the end (delta: -35.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 08:52:41,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.40ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 82.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 08:52:41,048 INFO L158 Benchmark]: Boogie Preprocessor took 37.66ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 80.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:52:41,049 INFO L158 Benchmark]: RCFGBuilder took 316.09ms. Allocated memory is still 109.1MB. Free memory was 80.6MB in the beginning and 70.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 08:52:41,049 INFO L158 Benchmark]: TraceAbstraction took 575.37ms. Allocated memory is still 109.1MB. Free memory was 69.7MB in the beginning and 77.6MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:52:41,050 INFO L158 Benchmark]: Witness Printer took 5.06ms. Allocated memory is still 109.1MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:52:41,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.51ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 48.4MB in the beginning and 83.8MB in the end (delta: -35.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.40ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 82.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.66ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 80.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 316.09ms. Allocated memory is still 109.1MB. Free memory was 80.6MB in the beginning and 70.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 575.37ms. Allocated memory is still 109.1MB. Free memory was 69.7MB in the beginning and 77.6MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.06ms. Allocated memory is still 109.1MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-12 08:52:41,098 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_8.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 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:52:42,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:52:42,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:52:42,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:52:42,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:52:42,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:52:42,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:52:42,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:52:42,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:52:42,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:52:42,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:52:42,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:52:42,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:52:42,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:52:42,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:52:42,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:52:42,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:52:42,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:52:42,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:52:42,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:52:42,956 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:52:42,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:52:42,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:52:42,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:52:42,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:52:42,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:52:42,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:52:42,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:52:42,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:52:42,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:52:42,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:52:42,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:52:42,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:52:42,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:52:42,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:52:42,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:52:42,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:52:42,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:52:42,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:52:42,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:52:42,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:52:42,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:52:42,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 08:52:42,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:52:42,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:52:43,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:52:43,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:52:43,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:52:43,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:52:43,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:52:43,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:52:43,002 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:52:43,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:52:43,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:52:43,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:52:43,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:52:43,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:52:43,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:52:43,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:52:43,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 08:52:43,004 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 08:52:43,004 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 08:52:43,004 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:52:43,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:52:43,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:52:43,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:52:43,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:52:43,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:52:43,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:52:43,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:52:43,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:52:43,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:52:43,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:52:43,006 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 08:52:43,006 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 08:52:43,007 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:52:43,007 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:52:43,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:52:43,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 08:52:43,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2022-07-12 08:52:43,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:52:43,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:52:43,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:52:43,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:52:43,333 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:52:43,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2022-07-12 08:52:43,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/356a4d553/375ff04bb41e4a139cea75bcc465df8e/FLAG318b91b6c [2022-07-12 08:52:43,788 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:52:43,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2022-07-12 08:52:43,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/356a4d553/375ff04bb41e4a139cea75bcc465df8e/FLAG318b91b6c [2022-07-12 08:52:44,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/356a4d553/375ff04bb41e4a139cea75bcc465df8e [2022-07-12 08:52:44,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:52:44,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:52:44,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:52:44,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:52:44,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:52:44,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8351f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44, skipping insertion in model container [2022-07-12 08:52:44,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:52:44,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:52:44,398 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_8.i[1224,1237] [2022-07-12 08:52:44,433 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_8.i[2806,2819] [2022-07-12 08:52:44,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:52:44,456 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:52:44,483 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_8.i[1224,1237] [2022-07-12 08:52:44,493 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_8.i[2806,2819] [2022-07-12 08:52:44,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:52:44,529 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:52:44,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44 WrapperNode [2022-07-12 08:52:44,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:52:44,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:52:44,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:52:44,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:52:44,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,578 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2022-07-12 08:52:44,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:52:44,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:52:44,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:52:44,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:52:44,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:52:44,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:52:44,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:52:44,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:52:44,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (1/1) ... [2022-07-12 08:52:44,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:52:44,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:52:44,664 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 08:52:44,678 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 08:52:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:52:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 08:52:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:52:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:52:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 08:52:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 08:52:44,774 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:52:44,775 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:52:49,919 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:52:49,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:52:49,925 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 08:52:49,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:52:49 BoogieIcfgContainer [2022-07-12 08:52:49,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:52:49,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:52:49,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:52:49,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:52:49,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:52:44" (1/3) ... [2022-07-12 08:52:49,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e01b5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:52:49, skipping insertion in model container [2022-07-12 08:52:49,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:52:44" (2/3) ... [2022-07-12 08:52:49,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e01b5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:52:49, skipping insertion in model container [2022-07-12 08:52:49,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:52:49" (3/3) ... [2022-07-12 08:52:49,934 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2022-07-12 08:52:49,946 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:52:49,947 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:52:49,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:52:49,989 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@bec013d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f1b3cd2 [2022-07-12 08:52:49,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:52:49,993 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 08:52:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:52:50,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:52:50,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:52:50,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:52:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:52:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-07-12 08:52:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 08:52:50,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416095387] [2022-07-12 08:52:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:52:50,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 08:52:50,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 08:52:50,031 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 08:52:50,040 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 08:52:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:52:51,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 08:52:51,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:52:51,090 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 08:52:51,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:52:51,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 08:52:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416095387] [2022-07-12 08:52:51,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416095387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:52:51,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:52:51,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 08:52:51,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588357849] [2022-07-12 08:52:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:52:51,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 08:52:51,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 08:52:51,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 08:52:51,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:52:51,130 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 08:52:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:52:51,147 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-07-12 08:52:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 08:52:51,149 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 08:52:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:52:51,154 INFO L225 Difference]: With dead ends: 57 [2022-07-12 08:52:51,155 INFO L226 Difference]: Without dead ends: 26 [2022-07-12 08:52:51,157 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 08:52:51,161 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 08:52:51,162 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 08:52:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-12 08:52:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-12 08:52:51,191 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 08:52:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-07-12 08:52:51,195 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-07-12 08:52:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:52:51,196 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-07-12 08:52:51,199 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 08:52:51,199 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-07-12 08:52:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:52:51,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:52:51,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:52:51,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 08:52:51,411 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 08:52:51,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:52:51,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:52:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-07-12 08:52:51,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 08:52:51,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798378566] [2022-07-12 08:52:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:52:51,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 08:52:51,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 08:52:51,415 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 08:52:51,419 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 08:52:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:52:54,324 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 08:52:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:52:58,711 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 08:52:58,712 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 08:52:58,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 08:52:58,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 08:52:58,759 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 08:52:58,915 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 08:52:58,919 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 08:52:58,922 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 08:52:58,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 08:52:58 BoogieIcfgContainer [2022-07-12 08:52:58,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 08:52:58,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 08:52:58,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 08:52:58,962 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 08:52:58,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:52:49" (3/4) ... [2022-07-12 08:52:58,965 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 08:52:59,002 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 08:52:59,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 08:52:59,004 INFO L158 Benchmark]: Toolchain (without parser) took 14798.76ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 28.6MB in the end (delta: 19.0MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2022-07-12 08:52:59,005 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 47.7MB in the end (delta: 32.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:52:59,005 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.56ms. Allocated memory is still 67.1MB. Free memory was 47.4MB in the beginning and 49.2MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 08:52:59,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.83ms. Allocated memory is still 67.1MB. Free memory was 49.0MB in the beginning and 47.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:52:59,007 INFO L158 Benchmark]: Boogie Preprocessor took 51.10ms. Allocated memory is still 67.1MB. Free memory was 47.4MB in the beginning and 45.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 08:52:59,007 INFO L158 Benchmark]: RCFGBuilder took 5295.10ms. Allocated memory is still 67.1MB. Free memory was 45.8MB in the beginning and 35.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 08:52:59,008 INFO L158 Benchmark]: TraceAbstraction took 9032.13ms. Allocated memory is still 67.1MB. Free memory was 34.6MB in the beginning and 30.4MB in the end (delta: 4.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2022-07-12 08:52:59,008 INFO L158 Benchmark]: Witness Printer took 41.75ms. Allocated memory is still 67.1MB. Free memory was 30.4MB in the beginning and 28.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 08:52:59,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 47.7MB in the end (delta: 32.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.56ms. Allocated memory is still 67.1MB. Free memory was 47.4MB in the beginning and 49.2MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.83ms. Allocated memory is still 67.1MB. Free memory was 49.0MB in the beginning and 47.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.10ms. Allocated memory is still 67.1MB. Free memory was 47.4MB in the beginning and 45.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5295.10ms. Allocated memory is still 67.1MB. Free memory was 45.8MB in the beginning and 35.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9032.13ms. Allocated memory is still 67.1MB. Free memory was 34.6MB in the beginning and 30.4MB in the end (delta: 4.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 41.75ms. Allocated memory is still 67.1MB. Free memory was 30.4MB in the beginning and 28.6MB 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: 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 > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [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)=-1.112996220588684, \result=-0.8978593945503235, x=-1.112996220588684] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.112996220588684, \result=0.4471985399723053, x=-1.112996220588684] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-1.112996220588684, x=0.894745945930481] [L109] reach_error() VAL [IN=-1.112996220588684, x=0.894745945930481] - 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: 8.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.8s 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 08:52:59,139 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE