./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_while_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/ldv-regression/test_while_int.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 5a78e5ac8a70d10b48fa6c5955c8640de4def14b .................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-11-28 16:57:58,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:57:58,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:57:58,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:57:58,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:57:58,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:57:58,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:57:58,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:57:58,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:57:58,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:57:58,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:57:58,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:57:58,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:57:58,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:57:58,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:57:58,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:57:58,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:57:58,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:57:58,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:57:58,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:57:58,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:57:58,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:57:58,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:57:58,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:57:58,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:58,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:58,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:58,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:58,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:58,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:58,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:58,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:58,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:58,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:58,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:58,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:58,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:58,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:58,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:58,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:58,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:58,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:57:58,683 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:58,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:58,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:58,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:58,691 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:58,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:58,691 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:58,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:57:58,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:58,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:58,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:58,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:58,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:58,695 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:58,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:58,695 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:58,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:58,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:58,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:58,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:58,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:58,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:58,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:58,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:58,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:58,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:57:58,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:57:58,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:58,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:58,699 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(__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 -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2019-11-28 16:57:59,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:59,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:59,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:59,056 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:59,057 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:59,057 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_while_int.i [2019-11-28 16:57:59,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a285149/6ce2f14d58ae42a3aa198742bcc38ac6/FLAGec9c1e71a [2019-11-28 16:57:59,548 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:59,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.i [2019-11-28 16:57:59,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a285149/6ce2f14d58ae42a3aa198742bcc38ac6/FLAGec9c1e71a [2019-11-28 16:57:59,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a285149/6ce2f14d58ae42a3aa198742bcc38ac6 [2019-11-28 16:57:59,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:59,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:59,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:59,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:59,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:59,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:59" (1/1) ... [2019-11-28 16:57:59,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34aca8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:59, skipping insertion in model container [2019-11-28 16:57:59,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:59" (1/1) ... [2019-11-28 16:57:59,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:59,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:58:00,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:58:00,207 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:58:00,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:58:00,245 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:58:00,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00 WrapperNode [2019-11-28 16:58:00,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:58:00,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:58:00,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:58:00,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:58:00,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (1/1) ... [2019-11-28 16:58:00,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (1/1) ... [2019-11-28 16:58:00,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:58:00,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:58:00,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:58:00,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:58:00,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (1/1) ... [2019-11-28 16:58:00,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (1/1) ... [2019-11-28 16:58:00,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (1/1) ... [2019-11-28 16:58:00,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (1/1) ... [2019-11-28 16:58:00,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (1/1) ... [2019-11-28 16:58:00,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (1/1) ... [2019-11-28 16:58:00,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (1/1) ... [2019-11-28 16:58:00,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:58:00,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:58:00,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:58:00,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:58:00,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (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 [2019-11-28 16:58:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:58:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:58:00,577 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:58:00,577 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 16:58:00,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:58:00 BoogieIcfgContainer [2019-11-28 16:58:00,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:58:00,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:58:00,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:58:00,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:58:00,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:59" (1/3) ... [2019-11-28 16:58:00,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b3b024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:58:00, skipping insertion in model container [2019-11-28 16:58:00,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:00" (2/3) ... [2019-11-28 16:58:00,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b3b024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:58:00, skipping insertion in model container [2019-11-28 16:58:00,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:58:00" (3/3) ... [2019-11-28 16:58:00,593 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2019-11-28 16:58:00,601 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:58:00,607 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:58:00,620 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:58:00,643 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:58:00,643 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:58:00,643 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:58:00,643 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:58:00,644 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:58:00,644 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:58:00,644 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:58:00,644 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:58:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-28 16:58:00,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:58:00,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:58:00,664 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:58:00,665 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:58:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:58:00,670 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2019-11-28 16:58:00,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:58:00,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244964609] [2019-11-28 16:58:00,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:58:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:58:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:58:00,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244964609] [2019-11-28 16:58:00,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:58:00,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 16:58:00,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969075966] [2019-11-28 16:58:00,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:58:00,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:58:00,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:58:00,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:58:00,871 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-28 16:58:00,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:58:00,946 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2019-11-28 16:58:00,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:58:00,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 16:58:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:58:00,959 INFO L225 Difference]: With dead ends: 19 [2019-11-28 16:58:00,959 INFO L226 Difference]: Without dead ends: 7 [2019-11-28 16:58:00,970 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:58:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-28 16:58:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 16:58:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 16:58:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-28 16:58:01,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-11-28 16:58:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:58:01,003 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-28 16:58:01,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:58:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-28 16:58:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 16:58:01,004 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:58:01,004 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-11-28 16:58:01,005 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:58:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:58:01,005 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2019-11-28 16:58:01,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:58:01,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199079314] [2019-11-28 16:58:01,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:58:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:58:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:58:01,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199079314] [2019-11-28 16:58:01,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345733630] [2019-11-28 16:58:01,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:58:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:58:01,107 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 16:58:01,112 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:58:01,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:58:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:58:01,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 16:58:01,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-28 16:58:01,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113002546] [2019-11-28 16:58:01,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:58:01,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:58:01,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:58:01,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:58:01,174 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-11-28 16:58:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:58:01,229 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-28 16:58:01,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:58:01,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-28 16:58:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:58:01,230 INFO L225 Difference]: With dead ends: 12 [2019-11-28 16:58:01,230 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 16:58:01,232 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-28 16:58:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 16:58:01,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-28 16:58:01,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 16:58:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 16:58:01,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-11-28 16:58:01,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:58:01,236 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 16:58:01,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:58:01,236 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 16:58:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 16:58:01,236 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:58:01,237 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-11-28 16:58:01,440 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:58:01,441 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:58:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:58:01,442 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2019-11-28 16:58:01,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:58:01,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863969181] [2019-11-28 16:58:01,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:58:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:58:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:58:01,499 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:58:01,499 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:58:01,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:58:01 BoogieIcfgContainer [2019-11-28 16:58:01,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:58:01,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:58:01,523 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:58:01,523 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:58:01,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:58:00" (3/4) ... [2019-11-28 16:58:01,526 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:58:01,570 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:58:01,570 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:58:01,573 INFO L168 Benchmark]: Toolchain (without parser) took 1646.87 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -55.0 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:01,573 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:58:01,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.69 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:01,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -139.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:01,576 INFO L168 Benchmark]: Boogie Preprocessor took 20.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:01,577 INFO L168 Benchmark]: RCFGBuilder took 211.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:01,578 INFO L168 Benchmark]: TraceAbstraction took 940.25 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:01,578 INFO L168 Benchmark]: Witness Printer took 48.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:01,583 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 319.69 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 99.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -139.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 211.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 940.25 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. * Witness Printer took 48.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. 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: [L23] int i=0; [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 7 SDslu, 15 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 3 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...