./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:48:10,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:48:10,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:48:10,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:48:10,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:48:10,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:48:10,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:48:10,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:48:10,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:48:10,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:48:10,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:48:10,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:48:10,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:48:10,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:48:10,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:48:10,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:48:10,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:48:10,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:48:10,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:48:10,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:48:10,317 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:48:10,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:48:10,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:48:10,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:48:10,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:48:10,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:48:10,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:48:10,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:48:10,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:48:10,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:48:10,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:48:10,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:48:10,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:48:10,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:48:10,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:48:10,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:48:10,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:48:10,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:48:10,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:48:10,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:48:10,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:48:10,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:48:10,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:48:10,375 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:48:10,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:48:10,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:48:10,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:48:10,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:48:10,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:48:10,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:48:10,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:48:10,379 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:48:10,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:48:10,381 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:48:10,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:48:10,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:48:10,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:48:10,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:48:10,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:48:10,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:48:10,382 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:48:10,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:48:10,382 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:48:10,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:48:10,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:48:10,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:48:10,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:48:10,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:48:10,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:48:10,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:48:10,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:48:10,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:48:10,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:48:10,385 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:48:10,385 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:48:10,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:48:10,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 [2022-07-19 19:48:10,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:48:10,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:48:10,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:48:10,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:48:10,640 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:48:10,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2022-07-19 19:48:10,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce15cfe7e/241955f5081e49bb8b27e26462ddd24a/FLAG8645f30c3 [2022-07-19 19:48:11,067 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:48:11,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2022-07-19 19:48:11,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce15cfe7e/241955f5081e49bb8b27e26462ddd24a/FLAG8645f30c3 [2022-07-19 19:48:11,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce15cfe7e/241955f5081e49bb8b27e26462ddd24a [2022-07-19 19:48:11,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:48:11,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:48:11,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:48:11,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:48:11,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:48:11,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620a0c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11, skipping insertion in model container [2022-07-19 19:48:11,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:48:11,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:48:11,649 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_3+newton_1_2.i[1226,1239] [2022-07-19 19:48:11,670 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_3+newton_1_2.i[2820,2833] [2022-07-19 19:48:11,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:48:11,688 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:48:11,708 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_3+newton_1_2.i[1226,1239] [2022-07-19 19:48:11,721 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_3+newton_1_2.i[2820,2833] [2022-07-19 19:48:11,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:48:11,733 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:48:11,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11 WrapperNode [2022-07-19 19:48:11,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:48:11,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:48:11,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:48:11,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:48:11,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,768 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-19 19:48:11,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:48:11,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:48:11,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:48:11,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:48:11,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:48:11,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:48:11,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:48:11,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:48:11,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (1/1) ... [2022-07-19 19:48:11,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:48:11,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:48:11,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 19:48:11,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 19:48:11,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:48:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:48:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:48:11,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:48:11,908 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:48:11,910 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:48:12,133 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:48:12,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:48:12,138 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 19:48:12,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:48:12 BoogieIcfgContainer [2022-07-19 19:48:12,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:48:12,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:48:12,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:48:12,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:48:12,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:48:11" (1/3) ... [2022-07-19 19:48:12,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e9bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:48:12, skipping insertion in model container [2022-07-19 19:48:12,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:11" (2/3) ... [2022-07-19 19:48:12,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e9bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:48:12, skipping insertion in model container [2022-07-19 19:48:12,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:48:12" (3/3) ... [2022-07-19 19:48:12,156 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_2.i [2022-07-19 19:48:12,169 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:48:12,170 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:48:12,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:48:12,218 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@1b0c30c4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49e9cce5 [2022-07-19 19:48:12,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:48:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:48:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 19:48:12,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:48:12,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:48:12,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:48:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:48:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-19 19:48:12,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:48:12,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894071035] [2022-07-19 19:48:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:48:12,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:48:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:48:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:48:12,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:48:12,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894071035] [2022-07-19 19:48:12,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894071035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:48:12,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:48:12,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 19:48:12,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060826580] [2022-07-19 19:48:12,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:48:12,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 19:48:12,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:48:12,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 19:48:12,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:48:12,437 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:48:12,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:48:12,455 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-19 19:48:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 19:48:12,457 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-19 19:48:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:48:12,464 INFO L225 Difference]: With dead ends: 47 [2022-07-19 19:48:12,464 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 19:48:12,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:48:12,475 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:48:12,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:48:12,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 19:48:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 19:48:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:48:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-19 19:48:12,508 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-19 19:48:12,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:48:12,509 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-19 19:48:12,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:48:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-19 19:48:12,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 19:48:12,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:48:12,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:48:12,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:48:12,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:48:12,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:48:12,514 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-19 19:48:12,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:48:12,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143813416] [2022-07-19 19:48:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:48:12,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:48:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 19:48:12,552 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 19:48:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 19:48:12,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 19:48:12,593 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 19:48:12,597 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 19:48:12,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-19 19:48:12,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:48:12,603 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 19:48:12,608 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 19:48:12,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 07:48:12 BoogieIcfgContainer [2022-07-19 19:48:12,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 19:48:12,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 19:48:12,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 19:48:12,635 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 19:48:12,635 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:48:12" (3/4) ... [2022-07-19 19:48:12,638 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 19:48:12,638 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 19:48:12,640 INFO L158 Benchmark]: Toolchain (without parser) took 1163.66ms. Allocated memory is still 113.2MB. Free memory was 81.6MB in the beginning and 51.4MB in the end (delta: 30.2MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2022-07-19 19:48:12,641 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 19:48:12,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.07ms. Allocated memory is still 113.2MB. Free memory was 81.6MB in the beginning and 88.8MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 19:48:12,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.26ms. Allocated memory is still 113.2MB. Free memory was 88.8MB in the beginning and 87.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 19:48:12,646 INFO L158 Benchmark]: Boogie Preprocessor took 24.10ms. Allocated memory is still 113.2MB. Free memory was 87.1MB in the beginning and 85.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 19:48:12,647 INFO L158 Benchmark]: RCFGBuilder took 346.59ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 74.9MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 19:48:12,647 INFO L158 Benchmark]: TraceAbstraction took 491.00ms. Allocated memory is still 113.2MB. Free memory was 74.5MB in the beginning and 51.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-19 19:48:12,647 INFO L158 Benchmark]: Witness Printer took 3.69ms. Allocated memory is still 113.2MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 19:48:12,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.07ms. Allocated memory is still 113.2MB. Free memory was 81.6MB in the beginning and 88.8MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.26ms. Allocated memory is still 113.2MB. Free memory was 88.8MB in the beginning and 87.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.10ms. Allocated memory is still 113.2MB. Free memory was 87.1MB in the beginning and 85.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 346.59ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 74.9MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 491.00ms. Allocated memory is still 113.2MB. Free memory was 74.5MB in the beginning and 51.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.69ms. Allocated memory is still 113.2MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 19:48:12,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:48:14,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:48:14,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:48:14,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:48:14,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:48:14,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:48:14,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:48:14,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:48:14,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:48:14,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:48:14,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:48:14,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:48:14,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:48:14,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:48:14,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:48:14,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:48:14,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:48:14,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:48:14,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:48:14,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:48:14,655 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:48:14,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:48:14,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:48:14,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:48:14,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:48:14,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:48:14,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:48:14,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:48:14,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:48:14,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:48:14,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:48:14,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:48:14,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:48:14,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:48:14,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:48:14,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:48:14,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:48:14,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:48:14,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:48:14,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:48:14,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:48:14,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:48:14,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 19:48:14,716 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:48:14,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:48:14,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:48:14,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:48:14,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:48:14,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:48:14,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:48:14,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:48:14,719 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:48:14,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:48:14,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:48:14,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:48:14,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:48:14,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:48:14,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:48:14,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:48:14,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 19:48:14,722 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 19:48:14,722 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 19:48:14,722 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:48:14,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:48:14,722 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:48:14,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:48:14,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:48:14,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:48:14,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:48:14,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:48:14,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:48:14,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:48:14,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:48:14,724 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 19:48:14,724 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 19:48:14,725 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:48:14,725 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:48:14,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:48:14,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 19:48:14,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 [2022-07-19 19:48:15,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:48:15,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:48:15,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:48:15,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:48:15,051 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:48:15,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2022-07-19 19:48:15,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78c96072/2684d73b115e4038ad1eba3a43150484/FLAGf89d42968 [2022-07-19 19:48:15,495 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:48:15,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2022-07-19 19:48:15,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78c96072/2684d73b115e4038ad1eba3a43150484/FLAGf89d42968 [2022-07-19 19:48:15,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78c96072/2684d73b115e4038ad1eba3a43150484 [2022-07-19 19:48:15,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:48:15,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:48:15,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:48:15,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:48:15,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:48:15,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:48:15" (1/1) ... [2022-07-19 19:48:15,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535894e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:15, skipping insertion in model container [2022-07-19 19:48:15,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:48:15" (1/1) ... [2022-07-19 19:48:15,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:48:15,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:48:16,045 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_3+newton_1_2.i[1226,1239] [2022-07-19 19:48:16,064 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_3+newton_1_2.i[2820,2833] [2022-07-19 19:48:16,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:48:16,075 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:48:16,119 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_3+newton_1_2.i[1226,1239] [2022-07-19 19:48:16,127 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_3+newton_1_2.i[2820,2833] [2022-07-19 19:48:16,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:48:16,155 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:48:16,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16 WrapperNode [2022-07-19 19:48:16,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:48:16,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:48:16,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:48:16,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:48:16,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,209 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-19 19:48:16,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:48:16,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:48:16,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:48:16,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:48:16,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:48:16,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:48:16,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:48:16,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:48:16,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (1/1) ... [2022-07-19 19:48:16,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:48:16,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:48:16,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 19:48:16,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 19:48:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:48:16,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 19:48:16,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:48:16,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:48:16,402 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:48:16,403 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:48:22,333 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:48:22,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:48:22,339 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 19:48:22,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:48:22 BoogieIcfgContainer [2022-07-19 19:48:22,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:48:22,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:48:22,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:48:22,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:48:22,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:48:15" (1/3) ... [2022-07-19 19:48:22,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590c8677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:48:22, skipping insertion in model container [2022-07-19 19:48:22,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:48:16" (2/3) ... [2022-07-19 19:48:22,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590c8677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:48:22, skipping insertion in model container [2022-07-19 19:48:22,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:48:22" (3/3) ... [2022-07-19 19:48:22,348 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_2.i [2022-07-19 19:48:22,370 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:48:22,370 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:48:22,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:48:22,418 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@3150e591, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b0449de [2022-07-19 19:48:22,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:48:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:48:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 19:48:22,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:48:22,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:48:22,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:48:22,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:48:22,432 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-19 19:48:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 19:48:22,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303059142] [2022-07-19 19:48:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:48:22,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 19:48:22,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 19:48:22,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 19:48:22,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 19:48:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:48:23,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 19:48:23,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:48:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:48:23,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:48:23,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 19:48:23,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303059142] [2022-07-19 19:48:23,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303059142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:48:23,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:48:23,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 19:48:23,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997972591] [2022-07-19 19:48:23,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:48:23,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 19:48:23,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 19:48:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 19:48:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:48:23,365 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:48:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:48:23,379 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-19 19:48:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 19:48:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-19 19:48:23,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:48:23,389 INFO L225 Difference]: With dead ends: 47 [2022-07-19 19:48:23,390 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 19:48:23,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:48:23,398 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:48:23,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:48:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 19:48:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 19:48:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:48:23,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-19 19:48:23,433 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-19 19:48:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:48:23,433 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-19 19:48:23,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:48:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-19 19:48:23,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 19:48:23,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:48:23,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:48:23,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 19:48:23,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 19:48:23,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:48:23,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:48:23,657 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-19 19:48:23,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 19:48:23,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796187859] [2022-07-19 19:48:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:48:23,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 19:48:23,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 19:48:23,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 19:48:23,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process