/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:21:22,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:21:22,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:21:22,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:21:22,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:21:22,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:21:22,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:21:22,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:21:22,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:21:22,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:21:22,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:21:22,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:21:22,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:21:22,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:21:22,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:21:22,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:21:22,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:21:22,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:21:22,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:21:22,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:21:22,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:21:22,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:21:22,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:21:22,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:21:22,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:21:22,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:21:22,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:21:22,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:21:22,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:21:22,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:21:22,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:21:22,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:21:22,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:21:22,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:21:22,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:21:22,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:21:22,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:21:22,442 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:21:22,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:21:22,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:21:22,443 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:21:22,443 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:21:22,443 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:21:22,444 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:21:22,444 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:21:22,444 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:21:22,444 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:21:22,444 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:21:22,444 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:21:22,445 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:21:22,445 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:21:22,445 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:21:22,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:21:22,446 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:21:22,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:21:22,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:21:22,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:21:22,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:21:22,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:21:22,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:21:22,447 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:21:22,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:21:22,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:21:22,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:21:22,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:21:22,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:21:22,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:21:22,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:21:22,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:21:22,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:21:22,449 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:21:22,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:21:22,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:21:22,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:21:22,450 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:21:22,736 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:21:22,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:21:22,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:21:22,758 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:21:22,759 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:21:22,759 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2019-11-24 04:21:22,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db8a7d71/cd86a06d9c8244e0a273c5759b14c806/FLAG88755b8a1 [2019-11-24 04:21:23,268 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:21:23,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i [2019-11-24 04:21:23,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db8a7d71/cd86a06d9c8244e0a273c5759b14c806/FLAG88755b8a1 [2019-11-24 04:21:23,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db8a7d71/cd86a06d9c8244e0a273c5759b14c806 [2019-11-24 04:21:23,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:21:23,679 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:21:23,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:21:23,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:21:23,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:21:23,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:23,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cabdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23, skipping insertion in model container [2019-11-24 04:21:23,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:23,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:21:23,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:21:23,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:21:23,879 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:21:23,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:21:23,910 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:21:23,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23 WrapperNode [2019-11-24 04:21:23,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:21:23,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:21:23,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:21:23,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:21:23,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:23,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:24,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:21:24,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:21:24,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:21:24,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:21:24,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:24,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:24,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:24,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:24,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:24,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:24,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (1/1) ... [2019-11-24 04:21:24,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:21:24,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:21:24,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:21:24,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:21:24,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (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 [2019-11-24 04:21:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:21:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:21:24,479 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:21:24,479 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 04:21:24,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:21:24 BoogieIcfgContainer [2019-11-24 04:21:24,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:21:24,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:21:24,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:21:24,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:21:24,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:21:23" (1/3) ... [2019-11-24 04:21:24,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb4dae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:21:24, skipping insertion in model container [2019-11-24 04:21:24,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:21:23" (2/3) ... [2019-11-24 04:21:24,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb4dae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:21:24, skipping insertion in model container [2019-11-24 04:21:24,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:21:24" (3/3) ... [2019-11-24 04:21:24,488 INFO L109 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2019-11-24 04:21:24,497 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:21:24,505 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:21:24,515 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:21:24,539 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:21:24,539 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:21:24,539 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:21:24,540 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:21:24,540 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:21:24,540 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:21:24,540 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:21:24,540 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:21:24,553 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-24 04:21:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 04:21:24,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:21:24,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 04:21:24,559 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:21:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:21:24,564 INFO L82 PathProgramCache]: Analyzing trace with hash 30662980, now seen corresponding path program 1 times [2019-11-24 04:21:24,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:21:24,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458186190] [2019-11-24 04:21:24,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:21:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:21:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:21:24,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458186190] [2019-11-24 04:21:24,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:21:24,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:21:24,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792766758] [2019-11-24 04:21:24,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:21:24,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:21:24,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:21:24,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:21:24,703 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2019-11-24 04:21:24,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:21:24,721 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-24 04:21:24,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:21:24,722 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-24 04:21:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:21:24,732 INFO L225 Difference]: With dead ends: 15 [2019-11-24 04:21:24,732 INFO L226 Difference]: Without dead ends: 7 [2019-11-24 04:21:24,735 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:21:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-24 04:21:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-24 04:21:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-24 04:21:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-24 04:21:24,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-24 04:21:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:21:24,770 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-24 04:21:24,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:21:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-24 04:21:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:21:24,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:21:24,772 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:21:24,772 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:21:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:21:24,773 INFO L82 PathProgramCache]: Analyzing trace with hash 921979909, now seen corresponding path program 1 times [2019-11-24 04:21:24,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:21:24,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857865666] [2019-11-24 04:21:24,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:21:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:21:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:21:24,825 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-24 04:21:24,825 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-24 04:21:24,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:21:24 BoogieIcfgContainer [2019-11-24 04:21:24,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:21:24,848 INFO L168 Benchmark]: Toolchain (without parser) took 1167.46 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 103.4 MB in the beginning and 140.0 MB in the end (delta: -36.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-11-24 04:21:24,849 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-24 04:21:24,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.78 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 93.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-24 04:21:24,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.89 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 93.5 MB in the beginning and 181.0 MB in the end (delta: -87.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-11-24 04:21:24,852 INFO L168 Benchmark]: Boogie Preprocessor took 20.75 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 180.4 MB in the end (delta: 670.5 kB). Peak memory consumption was 670.5 kB. Max. memory is 7.1 GB. [2019-11-24 04:21:24,853 INFO L168 Benchmark]: RCFGBuilder took 432.81 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 159.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-11-24 04:21:24,854 INFO L168 Benchmark]: TraceAbstraction took 363.52 ms. Allocated memory is still 201.9 MB. Free memory was 159.9 MB in the beginning and 140.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:21:24,859 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.78 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 93.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 114.89 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 93.5 MB in the beginning and 181.0 MB in the end (delta: -87.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.75 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 180.4 MB in the end (delta: 670.5 kB). Peak memory consumption was 670.5 kB. Max. memory is 7.1 GB. * RCFGBuilder took 432.81 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 159.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 363.52 ms. Allocated memory is still 201.9 MB. Free memory was 159.9 MB in the beginning and 140.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int x,y,z,w; [L12] EXPR w = 0 [L12] EXPR z = w = 0 [L12] EXPR y = z = w = 0 [L12] x = y = z = w = 0 [L13] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...