./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_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 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:29:56,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:29:56,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:29:56,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:29:56,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:29:56,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:29:56,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:29:56,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:29:56,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:29:56,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:29:56,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:29:56,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:29:56,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:29:56,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:29:56,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:29:56,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:29:56,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:29:56,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:29:56,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:29:56,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:29:56,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:29:56,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:29:56,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:29:56,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:29:56,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:29:56,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:29:56,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:29:56,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:29:56,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:29:56,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:29:56,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:29:56,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:29:56,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:29:56,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:29:56,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:29:56,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:29:56,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:29:56,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:29:56,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:29:56,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:29:56,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:29:56,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:29:56,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:29:56,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:29:56,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:29:56,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:29:56,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:29:56,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:29:56,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:29:56,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:29:56,314 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:29:56,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:29:56,315 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:29:56,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:29:56,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:29:56,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:29:56,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:29:56,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:29:56,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:29:56,316 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:29:56,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:29:56,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:29:56,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:29:56,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:29:56,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:29:56,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:29:56,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:29:56,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:29:56,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:29:56,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:29:56,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:29:56,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:29:56,318 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:29:56,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:29:56,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:29:56,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:29:56,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 [2021-12-21 14:29:56,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:29:56,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:29:56,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:29:56,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:29:56,595 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:29:56,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2021-12-21 14:29:56,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ecab7a2/fc8f88102b2c4f33983a697f8be5f1b7/FLAG330f60e72 [2021-12-21 14:29:57,083 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:29:57,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2021-12-21 14:29:57,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ecab7a2/fc8f88102b2c4f33983a697f8be5f1b7/FLAG330f60e72 [2021-12-21 14:29:57,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ecab7a2/fc8f88102b2c4f33983a697f8be5f1b7 [2021-12-21 14:29:57,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:29:57,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:29:57,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:29:57,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:29:57,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:29:57,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227a43b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57, skipping insertion in model container [2021-12-21 14:29:57,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:29:57,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:29:57,290 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_2.i[1224,1237] [2021-12-21 14:29:57,311 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_2.i[2806,2819] [2021-12-21 14:29:57,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:29:57,319 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:29:57,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[1224,1237] [2021-12-21 14:29:57,341 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i[2806,2819] [2021-12-21 14:29:57,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:29:57,356 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:29:57,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57 WrapperNode [2021-12-21 14:29:57,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:29:57,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:29:57,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:29:57,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:29:57,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,395 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2021-12-21 14:29:57,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:29:57,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:29:57,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:29:57,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:29:57,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:29:57,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:29:57,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:29:57,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:29:57,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (1/1) ... [2021-12-21 14:29:57,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:29:57,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:29:57,472 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) [2021-12-21 14:29:57,474 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 [2021-12-21 14:29:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:29:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:29:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:29:57,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:29:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 14:29:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 14:29:57,571 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:29:57,574 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:29:57,760 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:29:57,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:29:57,765 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 14:29:57,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:29:57 BoogieIcfgContainer [2021-12-21 14:29:57,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:29:57,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:29:57,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:29:57,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:29:57,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:29:57" (1/3) ... [2021-12-21 14:29:57,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5248bf30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:29:57, skipping insertion in model container [2021-12-21 14:29:57,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:29:57" (2/3) ... [2021-12-21 14:29:57,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5248bf30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:29:57, skipping insertion in model container [2021-12-21 14:29:57,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:29:57" (3/3) ... [2021-12-21 14:29:57,780 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_2.i [2021-12-21 14:29:57,799 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:29:57,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:29:57,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:29:57,880 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:29:57,880 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:29:57,901 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) [2021-12-21 14:29:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:29:57,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:29:57,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:29:57,906 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:29:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:29:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-12-21 14:29:57,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:29:57,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498518933] [2021-12-21 14:29:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:29:57,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:29:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:29:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:29:58,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:29:58,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498518933] [2021-12-21 14:29:58,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498518933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:29:58,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:29:58,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:29:58,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933500332] [2021-12-21 14:29:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:29:58,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 14:29:58,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:29:58,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 14:29:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 14:29:58,099 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) [2021-12-21 14:29:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:29:58,133 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-12-21 14:29:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 14:29:58,136 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 [2021-12-21 14:29:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:29:58,143 INFO L225 Difference]: With dead ends: 57 [2021-12-21 14:29:58,143 INFO L226 Difference]: Without dead ends: 26 [2021-12-21 14:29:58,149 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:29:58,153 INFO L933 BasicCegarLoop]: 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 [2021-12-21 14:29:58,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:29:58,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-21 14:29:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-21 14:29:58,193 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) [2021-12-21 14:29:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-21 14:29:58,196 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-12-21 14:29:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:29:58,196 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-21 14:29:58,196 INFO L471 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) [2021-12-21 14:29:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-12-21 14:29:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:29:58,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:29:58,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:29:58,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:29:58,199 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:29:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:29:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-12-21 14:29:58,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:29:58,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518680263] [2021-12-21 14:29:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:29:58,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:29:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 14:29:58,236 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 14:29:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 14:29:58,277 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 14:29:58,278 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 14:29:58,280 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-21 14:29:58,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 14:29:58,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:29:58,289 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 14:29:58,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 14:29:58,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 02:29:58 BoogieIcfgContainer [2021-12-21 14:29:58,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 14:29:58,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 14:29:58,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 14:29:58,317 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 14:29:58,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:29:57" (3/4) ... [2021-12-21 14:29:58,319 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 14:29:58,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 14:29:58,321 INFO L158 Benchmark]: Toolchain (without parser) took 1202.93ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 67.9MB in the end (delta: 444.4kB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. [2021-12-21 14:29:58,322 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:29:58,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.40ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 74.5MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 14:29:58,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.09ms. Allocated memory is still 98.6MB. Free memory was 74.5MB in the beginning and 72.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:29:58,327 INFO L158 Benchmark]: Boogie Preprocessor took 42.91ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 71.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:29:58,327 INFO L158 Benchmark]: RCFGBuilder took 327.49ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 60.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 14:29:58,327 INFO L158 Benchmark]: TraceAbstraction took 546.55ms. Allocated memory is still 98.6MB. Free memory was 60.5MB in the beginning and 67.9MB in the end (delta: -7.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:29:58,328 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 98.6MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:29:58,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.40ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 74.5MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.09ms. Allocated memory is still 98.6MB. Free memory was 74.5MB in the beginning and 72.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.91ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 71.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 327.49ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 60.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 546.55ms. Allocated memory is still 98.6MB. Free memory was 60.5MB in the beginning and 67.9MB in the end (delta: -7.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 98.6MB. Free memory is still 67.9MB. 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 > -0.4f && IN < 0.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=49] [L109] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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 [2021-12-21 14:29:58,372 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_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 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:30:00,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:30:00,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:30:00,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:30:00,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:30:00,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:30:00,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:30:00,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:30:00,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:30:00,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:30:00,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:30:00,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:30:00,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:30:00,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:30:00,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:30:00,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:30:00,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:30:00,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:30:00,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:30:00,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:30:00,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:30:00,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:30:00,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:30:00,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:30:00,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:30:00,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:30:00,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:30:00,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:30:00,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:30:00,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:30:00,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:30:00,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:30:00,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:30:00,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:30:00,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:30:00,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:30:00,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:30:00,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:30:00,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:30:00,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:30:00,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:30:00,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 14:30:00,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:30:00,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:30:00,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:30:00,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:30:00,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:30:00,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:30:00,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:30:00,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:30:00,500 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:30:00,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:30:00,501 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:30:00,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:30:00,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:30:00,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:30:00,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:30:00,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:30:00,503 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 14:30:00,503 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 14:30:00,503 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 14:30:00,503 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:30:00,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:30:00,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:30:00,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:30:00,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:30:00,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:30:00,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:30:00,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:30:00,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:30:00,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:30:00,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:30:00,505 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 14:30:00,506 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 14:30:00,506 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:30:00,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:30:00,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:30:00,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:30:00,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 14:30:00,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 [2021-12-21 14:30:00,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:30:00,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:30:00,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:30:00,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:30:00,843 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:30:00,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2021-12-21 14:30:00,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e20db6d7/9b688393d1744cb2b75863456dd84aea/FLAGcf68e3ffa [2021-12-21 14:30:01,409 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:30:01,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2021-12-21 14:30:01,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e20db6d7/9b688393d1744cb2b75863456dd84aea/FLAGcf68e3ffa [2021-12-21 14:30:01,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e20db6d7/9b688393d1744cb2b75863456dd84aea [2021-12-21 14:30:01,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:30:01,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:30:01,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:30:01,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:30:01,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:30:01,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:30:01" (1/1) ... [2021-12-21 14:30:01,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba5fd4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:01, skipping insertion in model container [2021-12-21 14:30:01,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:30:01" (1/1) ... [2021-12-21 14:30:01,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:30:01,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:30:01,975 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_2.i[1224,1237] [2021-12-21 14:30:01,999 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_2.i[2806,2819] [2021-12-21 14:30:02,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:30:02,012 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:30:02,028 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_2.i[1224,1237] [2021-12-21 14:30:02,064 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_4+newton_1_2.i[2806,2819] [2021-12-21 14:30:02,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:30:02,080 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:30:02,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02 WrapperNode [2021-12-21 14:30:02,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:30:02,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:30:02,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:30:02,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:30:02,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,142 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2021-12-21 14:30:02,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:30:02,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:30:02,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:30:02,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:30:02,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:30:02,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:30:02,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:30:02,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:30:02,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (1/1) ... [2021-12-21 14:30:02,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:30:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:30:02,233 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) [2021-12-21 14:30:02,248 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 [2021-12-21 14:30:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:30:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 14:30:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:30:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:30:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 14:30:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 14:30:02,356 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:30:02,357 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:30:09,247 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:30:09,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:30:09,253 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 14:30:09,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:30:09 BoogieIcfgContainer [2021-12-21 14:30:09,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:30:09,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:30:09,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:30:09,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:30:09,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:30:01" (1/3) ... [2021-12-21 14:30:09,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1c4d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:30:09, skipping insertion in model container [2021-12-21 14:30:09,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:30:02" (2/3) ... [2021-12-21 14:30:09,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1c4d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:30:09, skipping insertion in model container [2021-12-21 14:30:09,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:30:09" (3/3) ... [2021-12-21 14:30:09,261 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_2.i [2021-12-21 14:30:09,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:30:09,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:30:09,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:30:09,326 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:30:09,327 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:30:09,341 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) [2021-12-21 14:30:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:30:09,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:30:09,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:30:09,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:30:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:30:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2021-12-21 14:30:09,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 14:30:09,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999471055] [2021-12-21 14:30:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:30:09,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 14:30:09,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 14:30:09,367 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) [2021-12-21 14:30:09,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 14:30:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:30:10,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 14:30:10,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 14:30:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:30:10,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 14:30:10,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 14:30:10,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999471055] [2021-12-21 14:30:10,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999471055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:30:10,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:30:10,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:30:10,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855340788] [2021-12-21 14:30:10,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:30:10,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 14:30:10,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 14:30:10,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 14:30:10,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 14:30:10,477 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) [2021-12-21 14:30:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:30:10,495 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2021-12-21 14:30:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 14:30:10,497 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 [2021-12-21 14:30:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:30:10,509 INFO L225 Difference]: With dead ends: 57 [2021-12-21 14:30:10,509 INFO L226 Difference]: Without dead ends: 26 [2021-12-21 14:30:10,512 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:30:10,518 INFO L933 BasicCegarLoop]: 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 [2021-12-21 14:30:10,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:30:10,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-21 14:30:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-21 14:30:10,553 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) [2021-12-21 14:30:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-21 14:30:10,556 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2021-12-21 14:30:10,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:30:10,556 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-21 14:30:10,557 INFO L471 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) [2021-12-21 14:30:10,557 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-12-21 14:30:10,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:30:10,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:30:10,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:30:10,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-21 14:30:10,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 14:30:10,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:30:10,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:30:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2021-12-21 14:30:10,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 14:30:10,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178235873] [2021-12-21 14:30:10,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:30:10,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 14:30:10,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 14:30:10,780 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) [2021-12-21 14:30:10,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process