./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call_1.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87afddccfd1da763b81be9f487d95a8fd1750032 ........................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 15:47:35,781 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 15:47:35,783 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 15:47:35,802 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 15:47:35,804 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 15:47:35,806 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 15:47:35,807 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 15:47:35,810 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 15:47:35,815 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 15:47:35,823 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 15:47:35,824 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 15:47:35,824 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 15:47:35,827 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 15:47:35,830 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 15:47:35,834 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 15:47:35,835 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 15:47:35,837 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 15:47:35,842 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 15:47:35,844 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 15:47:35,848 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 15:47:35,851 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 15:47:35,852 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 15:47:35,858 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 15:47:35,859 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 15:47:35,859 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 15:47:35,861 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 15:47:35,863 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 15:47:35,866 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 15:47:35,867 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 15:47:35,869 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 15:47:35,872 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 15:47:35,874 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 15:47:35,875 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 15:47:35,875 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 15:47:35,876 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 15:47:35,878 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 15:47:35,880 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 15:47:35,907 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 15:47:35,907 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 15:47:35,909 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 15:47:35,912 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 15:47:35,912 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 15:47:35,912 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 15:47:35,912 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 15:47:35,912 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 15:47:35,913 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 15:47:35,913 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 15:47:35,913 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 15:47:35,913 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 15:47:35,913 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 15:47:35,913 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 15:47:35,914 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 15:47:35,916 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 15:47:35,916 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 15:47:35,916 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 15:47:35,916 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 15:47:35,916 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 15:47:35,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:47:35,919 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 15:47:35,919 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 15:47:35,919 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 15:47:35,919 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 15:47:35,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 15:47:35,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 15:47:35,920 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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(__VERIFIER_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 -> 87afddccfd1da763b81be9f487d95a8fd1750032 [2019-01-14 15:47:35,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 15:47:35,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 15:47:36,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 15:47:36,009 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 15:47:36,009 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 15:47:36,010 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call_1.i [2019-01-14 15:47:36,072 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff710065e/52c2349be59644f8914759211a3d02cb/FLAG7b230f921 [2019-01-14 15:47:36,529 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 15:47:36,529 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call_1.i [2019-01-14 15:47:36,537 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff710065e/52c2349be59644f8914759211a3d02cb/FLAG7b230f921 [2019-01-14 15:47:36,882 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff710065e/52c2349be59644f8914759211a3d02cb [2019-01-14 15:47:36,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 15:47:36,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 15:47:36,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 15:47:36,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 15:47:36,892 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 15:47:36,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:47:36" (1/1) ... [2019-01-14 15:47:36,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4667f227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:36, skipping insertion in model container [2019-01-14 15:47:36,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:47:36" (1/1) ... [2019-01-14 15:47:36,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 15:47:36,926 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 15:47:37,171 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:47:37,175 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 15:47:37,194 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:47:37,212 INFO L195 MainTranslator]: Completed translation [2019-01-14 15:47:37,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37 WrapperNode [2019-01-14 15:47:37,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 15:47:37,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 15:47:37,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 15:47:37,216 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 15:47:37,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (1/1) ... [2019-01-14 15:47:37,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (1/1) ... [2019-01-14 15:47:37,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 15:47:37,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 15:47:37,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 15:47:37,254 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 15:47:37,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (1/1) ... [2019-01-14 15:47:37,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (1/1) ... [2019-01-14 15:47:37,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (1/1) ... [2019-01-14 15:47:37,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (1/1) ... [2019-01-14 15:47:37,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (1/1) ... [2019-01-14 15:47:37,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (1/1) ... [2019-01-14 15:47:37,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (1/1) ... [2019-01-14 15:47:37,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 15:47:37,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 15:47:37,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 15:47:37,277 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 15:47:37,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (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 [2019-01-14 15:47:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 15:47:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 15:47:37,570 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 15:47:37,570 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-14 15:47:37,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:47:37 BoogieIcfgContainer [2019-01-14 15:47:37,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 15:47:37,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 15:47:37,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 15:47:37,576 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 15:47:37,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 03:47:36" (1/3) ... [2019-01-14 15:47:37,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6e5354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:47:37, skipping insertion in model container [2019-01-14 15:47:37,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:37" (2/3) ... [2019-01-14 15:47:37,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6e5354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:47:37, skipping insertion in model container [2019-01-14 15:47:37,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:47:37" (3/3) ... [2019-01-14 15:47:37,579 INFO L112 eAbstractionObserver]: Analyzing ICFG test_while_int_true-termination.c_false-unreach-call_1.i [2019-01-14 15:47:37,588 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 15:47:37,595 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 15:47:37,608 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 15:47:37,638 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 15:47:37,638 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 15:47:37,638 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 15:47:37,639 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 15:47:37,639 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 15:47:37,639 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 15:47:37,639 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 15:47:37,639 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 15:47:37,639 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 15:47:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-01-14 15:47:37,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-14 15:47:37,659 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:47:37,660 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-14 15:47:37,663 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:47:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:47:37,669 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2019-01-14 15:47:37,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:47:37,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:47:37,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:37,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:47:37,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:47:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:47:37,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:47:37,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 15:47:37,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 15:47:37,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 15:47:37,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 15:47:37,883 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-01-14 15:47:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:47:38,048 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2019-01-14 15:47:38,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 15:47:38,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-01-14 15:47:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:47:38,059 INFO L225 Difference]: With dead ends: 20 [2019-01-14 15:47:38,059 INFO L226 Difference]: Without dead ends: 8 [2019-01-14 15:47:38,062 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 15:47:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-14 15:47:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-01-14 15:47:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-01-14 15:47:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-01-14 15:47:38,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-01-14 15:47:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:47:38,093 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-01-14 15:47:38,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 15:47:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-01-14 15:47:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-14 15:47:38,094 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:47:38,094 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-01-14 15:47:38,094 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:47:38,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:47:38,095 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2019-01-14 15:47:38,095 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:47:38,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:47:38,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:38,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:47:38,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:47:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:47:38,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 15:47:38,164 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-14 15:47:38,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:47:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:47:38,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 15:47:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:47:38,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 15:47:38,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-01-14 15:47:38,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 15:47:38,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 15:47:38,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-01-14 15:47:38,277 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-01-14 15:47:38,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:47:38,319 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-01-14 15:47:38,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 15:47:38,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-01-14 15:47:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:47:38,321 INFO L225 Difference]: With dead ends: 12 [2019-01-14 15:47:38,321 INFO L226 Difference]: Without dead ends: 10 [2019-01-14 15:47:38,322 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-01-14 15:47:38,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-01-14 15:47:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-01-14 15:47:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-14 15:47:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-01-14 15:47:38,325 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-01-14 15:47:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:47:38,325 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-01-14 15:47:38,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 15:47:38,325 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-01-14 15:47:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-14 15:47:38,326 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:47:38,326 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-01-14 15:47:38,326 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:47:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:47:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2019-01-14 15:47:38,327 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:47:38,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:47:38,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:38,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:47:38,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:47:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:47:38,355 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 15:47:38,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 03:47:38 BoogieIcfgContainer [2019-01-14 15:47:38,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 15:47:38,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 15:47:38,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 15:47:38,373 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 15:47:38,374 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:47:37" (3/4) ... [2019-01-14 15:47:38,377 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 15:47:38,423 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 15:47:38,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 15:47:38,424 INFO L168 Benchmark]: Toolchain (without parser) took 1538.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 954.0 MB in the beginning and 1.0 GB in the end (delta: -91.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-01-14 15:47:38,426 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:47:38,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.23 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 15:47:38,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.75 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:47:38,428 INFO L168 Benchmark]: Boogie Preprocessor took 22.09 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:47:38,429 INFO L168 Benchmark]: RCFGBuilder took 295.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-01-14 15:47:38,430 INFO L168 Benchmark]: TraceAbstraction took 800.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2019-01-14 15:47:38,430 INFO L168 Benchmark]: Witness Printer took 50.39 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:47:38,435 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 327.23 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.75 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.09 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 295.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 800.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * Witness Printer took 50.39 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i=0; [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 3 SDslu, 11 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 151 SizeOfPredicates, 1 NumberOfNonLiveVariables, 14 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...