./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/for_infinite_loop_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/loops/for_infinite_loop_2.c -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 e54633c21138b76e0a20540e3354416071759709 .............................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:53:52,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:53:52,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:53:52,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:53:52,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:53:52,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:53:52,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:53:52,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:53:52,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:53:52,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:53:52,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:53:52,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:53:52,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:53:52,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:53:52,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:53:52,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:53:52,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:53:52,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:53:52,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:53:52,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:53:52,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:53:52,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:53:52,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:53:52,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:53:52,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:53:52,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:53:52,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:53:52,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:53:52,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:53:52,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:53:52,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:53:52,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:53:52,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:53:52,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:53:52,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:53:52,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:53:52,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:53:52,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:53:52,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:53:52,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:53:52,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:53:52,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:53:52,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:53:52,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:53:52,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:53:52,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:53:52,330 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:53:52,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:53:52,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:53:52,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:53:52,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:53:52,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:53:52,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:53:52,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:53:52,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:53:52,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:53:52,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:53:52,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:53:52,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:53:52,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:53:52,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:53:52,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:53:52,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:53:52,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:53:52,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:53:52,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:53:52,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:53:52,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:53:52,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:53:52,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:53:52,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:53:52,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> e54633c21138b76e0a20540e3354416071759709 [2020-10-20 00:53:52,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:53:52,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:53:52,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:53:52,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:53:52,574 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:53:52,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/for_infinite_loop_2.c [2020-10-20 00:53:52,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103a38580/4b0fa72ad30d43cbb79fae7487a6faa8/FLAG32c9baec9 [2020-10-20 00:53:53,114 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:53:53,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/for_infinite_loop_2.c [2020-10-20 00:53:53,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103a38580/4b0fa72ad30d43cbb79fae7487a6faa8/FLAG32c9baec9 [2020-10-20 00:53:53,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103a38580/4b0fa72ad30d43cbb79fae7487a6faa8 [2020-10-20 00:53:53,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:53:53,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:53:53,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:53:53,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:53:53,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:53:53,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3596ec49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53, skipping insertion in model container [2020-10-20 00:53:53,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:53:53,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:53:53,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:53:53,817 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:53:53,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:53:53,847 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:53:53,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53 WrapperNode [2020-10-20 00:53:53,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:53:53,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:53:53,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:53:53,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:53:53,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:53:53,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:53:53,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:53:53,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:53:53,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... [2020-10-20 00:53:53,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:53:53,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:53:53,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:53:53,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:53:53,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:53:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:53:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:53:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:53:53,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:53:54,215 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:53:54,216 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-20 00:53:54,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:53:54 BoogieIcfgContainer [2020-10-20 00:53:54,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:53:54,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:53:54,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:53:54,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:53:54,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:53:53" (1/3) ... [2020-10-20 00:53:54,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc5823e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:53:54, skipping insertion in model container [2020-10-20 00:53:54,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:53:53" (2/3) ... [2020-10-20 00:53:54,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc5823e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:53:54, skipping insertion in model container [2020-10-20 00:53:54,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:53:54" (3/3) ... [2020-10-20 00:53:54,229 INFO L111 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_2.c [2020-10-20 00:53:54,243 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:53:54,250 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 00:53:54,267 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 00:53:54,306 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:53:54,306 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:53:54,307 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:53:54,307 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:53:54,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:53:54,308 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:53:54,308 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:53:54,308 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:53:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-20 00:53:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:53:54,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:53:54,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:53:54,337 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:53:54,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:53:54,345 INFO L82 PathProgramCache]: Analyzing trace with hash 889574253, now seen corresponding path program 1 times [2020-10-20 00:53:54,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:53:54,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224363865] [2020-10-20 00:53:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:53:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:53:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:53:54,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224363865] [2020-10-20 00:53:54,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:53:54,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:53:54,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117062786] [2020-10-20 00:53:54,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:53:54,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:53:54,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:53:54,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:53:54,591 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-10-20 00:53:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:53:54,639 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2020-10-20 00:53:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:53:54,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-20 00:53:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:53:54,648 INFO L225 Difference]: With dead ends: 24 [2020-10-20 00:53:54,649 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:53:54,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:53:54,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:53:54,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:53:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:53:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:53:54,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-10-20 00:53:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:53:54,674 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:53:54,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:53:54,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:53:54,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:53:54,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:53:54,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:53:54,713 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:53:54,714 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:53:54,714 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 26) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2020-10-20 00:53:54,714 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2020-10-20 00:53:54,714 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-20 00:53:54,715 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-10-20 00:53:54,715 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:53:54,715 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:53:54,715 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:53:54,715 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:53:54,715 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:53:54,715 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:53:54,716 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-10-20 00:53:54,716 INFO L274 CegarLoopResult]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-10-20 00:53:54,717 INFO L270 CegarLoopResult]: At program point L10-2(lines 1 29) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~x~0 0)) [2020-10-20 00:53:54,717 INFO L274 CegarLoopResult]: For program point L10-3(lines 10 12) no Hoare annotation was computed. [2020-10-20 00:53:54,717 INFO L270 CegarLoopResult]: At program point L10-5(lines 1 29) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2020-10-20 00:53:54,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:53:54 BoogieIcfgContainer [2020-10-20 00:53:54,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:53:54,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:53:54,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:53:54,735 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:53:54,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:53:54" (3/4) ... [2020-10-20 00:53:54,740 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:53:54,750 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 00:53:54,750 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:53:54,750 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:53:54,751 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:53:54,800 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:53:54,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:53:54,803 INFO L168 Benchmark]: Toolchain (without parser) took 1317.11 ms. Allocated memory was 40.4 MB in the beginning and 45.1 MB in the end (delta: 4.7 MB). Free memory was 18.8 MB in the beginning and 19.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:54,804 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.5 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:53:54,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.81 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.8 MB in the beginning and 17.6 MB in the end (delta: 236.3 kB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:54,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.66 ms. Allocated memory is still 41.4 MB. Free memory was 17.6 MB in the beginning and 15.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:54,807 INFO L168 Benchmark]: Boogie Preprocessor took 32.85 ms. Allocated memory is still 41.4 MB. Free memory was 15.9 MB in the beginning and 14.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:54,807 INFO L168 Benchmark]: RCFGBuilder took 302.46 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 14.6 MB in the beginning and 18.4 MB in the end (delta: -3.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:54,808 INFO L168 Benchmark]: TraceAbstraction took 514.63 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 18.0 MB in the beginning and 23.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:54,809 INFO L168 Benchmark]: Witness Printer took 66.12 ms. Allocated memory is still 45.1 MB. Free memory was 22.8 MB in the beginning and 19.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:53:54,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.5 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 356.81 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.8 MB in the beginning and 17.6 MB in the end (delta: 236.3 kB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.66 ms. Allocated memory is still 41.4 MB. Free memory was 17.6 MB in the beginning and 15.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.85 ms. Allocated memory is still 41.4 MB. Free memory was 15.9 MB in the beginning and 14.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 302.46 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 14.6 MB in the beginning and 18.4 MB in the end (delta: -3.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 514.63 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 18.0 MB in the beginning and 23.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Witness Printer took 66.12 ms. Allocated memory is still 45.1 MB. Free memory was 22.8 MB in the beginning and 19.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: !(0 == cond) && x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 8 SDslu, 7 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, 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: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 14 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 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 proved your program to be correct! Received shutdown request...