/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-acceleration/underapprox_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:15:27,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:15:27,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:15:27,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:15:27,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:15:27,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:15:27,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:15:27,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:15:27,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:15:27,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:15:27,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:15:27,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:15:27,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:15:27,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:15:27,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:15:27,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:15:27,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:15:27,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:15:27,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:15:27,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:15:27,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:15:27,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:15:27,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:15:27,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:15:27,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:15:27,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:15:27,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:15:27,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:15:27,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:15:27,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:15:27,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:15:27,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:15:27,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:15:27,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:15:27,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:15:27,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:15:27,556 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 04:15:27,574 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:15:27,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:15:27,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:15:27,575 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:15:27,576 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:15:27,580 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:15:27,580 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:15:27,580 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:15:27,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:15:27,581 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:15:27,581 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:15:27,581 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:15:27,581 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:15:27,582 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:15:27,582 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:15:27,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:15:27,584 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:15:27,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:15:27,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:15:27,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:15:27,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:15:27,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:15:27,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:15:27,586 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:15:27,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:15:27,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:15:27,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:15:27,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:15:27,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:15:27,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:15:27,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:15:27,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:15:27,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:15:27,589 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:15:27,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:15:27,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:15:27,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:15:27,591 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:15:27,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:15:27,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:15:27,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:15:27,904 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:15:27,904 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:15:27,905 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c [2019-11-24 04:15:27,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ffd0f06f/29f4481a39744d1b97df22d5f7fdcbf5/FLAGb47a17f46 [2019-11-24 04:15:28,414 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:15:28,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c [2019-11-24 04:15:28,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ffd0f06f/29f4481a39744d1b97df22d5f7fdcbf5/FLAGb47a17f46 [2019-11-24 04:15:28,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ffd0f06f/29f4481a39744d1b97df22d5f7fdcbf5 [2019-11-24 04:15:28,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:15:28,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:15:28,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:15:28,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:15:28,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:15:28,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:15:28" (1/1) ... [2019-11-24 04:15:28,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54be633c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:28, skipping insertion in model container [2019-11-24 04:15:28,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:15:28" (1/1) ... [2019-11-24 04:15:28,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:15:28,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:15:29,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:15:29,019 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:15:29,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:15:29,054 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:15:29,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29 WrapperNode [2019-11-24 04:15:29,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:15:29,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:15:29,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:15:29,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:15:29,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (1/1) ... [2019-11-24 04:15:29,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (1/1) ... [2019-11-24 04:15:29,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:15:29,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:15:29,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:15:29,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:15:29,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (1/1) ... [2019-11-24 04:15:29,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (1/1) ... [2019-11-24 04:15:29,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (1/1) ... [2019-11-24 04:15:29,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (1/1) ... [2019-11-24 04:15:29,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (1/1) ... [2019-11-24 04:15:29,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (1/1) ... [2019-11-24 04:15:29,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (1/1) ... [2019-11-24 04:15:29,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:15:29,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:15:29,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:15:29,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:15:29,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (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 04:15:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:15:29,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:15:29,422 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:15:29,423 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 04:15:29,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:15:29 BoogieIcfgContainer [2019-11-24 04:15:29,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:15:29,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:15:29,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:15:29,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:15:29,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:15:28" (1/3) ... [2019-11-24 04:15:29,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602fc47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:15:29, skipping insertion in model container [2019-11-24 04:15:29,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:15:29" (2/3) ... [2019-11-24 04:15:29,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602fc47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:15:29, skipping insertion in model container [2019-11-24 04:15:29,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:15:29" (3/3) ... [2019-11-24 04:15:29,432 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-1.c [2019-11-24 04:15:29,440 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:15:29,445 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:15:29,455 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:15:29,480 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:15:29,480 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:15:29,480 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:15:29,481 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:15:29,481 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:15:29,481 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:15:29,481 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:15:29,481 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:15:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-24 04:15:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 04:15:29,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:15:29,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 04:15:29,498 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:15:29,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:15:29,503 INFO L82 PathProgramCache]: Analyzing trace with hash 982688, now seen corresponding path program 1 times [2019-11-24 04:15:29,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:15:29,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203739293] [2019-11-24 04:15:29,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:15:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:15:29,719 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 04:15:29,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203739293] [2019-11-24 04:15:29,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:15:29,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:15:29,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878696995] [2019-11-24 04:15:29,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:15:29,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:15:29,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:15:29,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:15:29,753 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2019-11-24 04:15:29,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:15:29,817 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-24 04:15:29,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:15:29,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-24 04:15:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:15:29,845 INFO L225 Difference]: With dead ends: 13 [2019-11-24 04:15:29,846 INFO L226 Difference]: Without dead ends: 6 [2019-11-24 04:15:29,849 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 [2019-11-24 04:15:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-24 04:15:29,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-24 04:15:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-24 04:15:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-24 04:15:29,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-11-24 04:15:29,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:15:29,880 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-24 04:15:29,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:15:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-11-24 04:15:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 04:15:29,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:15:29,881 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 04:15:29,881 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:15:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:15:29,882 INFO L82 PathProgramCache]: Analyzing trace with hash 29879958, now seen corresponding path program 1 times [2019-11-24 04:15:29,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:15:29,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384136154] [2019-11-24 04:15:29,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:15:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:15:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:15:29,994 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384136154] [2019-11-24 04:15:29,994 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654675537] [2019-11-24 04:15:29,994 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 [2019-11-24 04:15:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:15:30,042 WARN L253 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-24 04:15:30,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:15:30,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:15:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:15:30,094 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:15:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:15:30,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [204755181] [2019-11-24 04:15:30,169 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-24 04:15:30,169 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:15:30,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:15:30,184 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:15:30,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:15:30,908 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:15:31,475 WARN L192 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 45 [2019-11-24 04:15:32,344 WARN L192 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 65 [2019-11-24 04:15:32,427 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:15:32,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:15:32,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2019-11-24 04:15:32,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051635999] [2019-11-24 04:15:32,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 04:15:32,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:15:32,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 04:15:32,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-24 04:15:32,430 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 8 states. [2019-11-24 04:15:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:15:32,521 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-24 04:15:32,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:15:32,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 5 [2019-11-24 04:15:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:15:32,523 INFO L225 Difference]: With dead ends: 13 [2019-11-24 04:15:32,523 INFO L226 Difference]: Without dead ends: 9 [2019-11-24 04:15:32,524 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-24 04:15:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-24 04:15:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-24 04:15:32,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-24 04:15:32,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-24 04:15:32,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2019-11-24 04:15:32,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:15:32,528 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-24 04:15:32,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 04:15:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-24 04:15:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:15:32,529 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:15:32,529 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2019-11-24 04:15:32,733 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:15:32,734 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:15:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:15:32,735 INFO L82 PathProgramCache]: Analyzing trace with hash 516312096, now seen corresponding path program 2 times [2019-11-24 04:15:32,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:15:32,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218980463] [2019-11-24 04:15:32,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:15:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:15:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:15:32,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218980463] [2019-11-24 04:15:32,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299509094] [2019-11-24 04:15:32,881 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:15:32,921 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-24 04:15:32,921 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-24 04:15:32,922 WARN L253 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-24 04:15:32,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:15:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:15:32,980 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:15:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:15:33,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1003965064] [2019-11-24 04:15:33,077 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-24 04:15:33,077 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:15:33,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:15:33,078 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:15:33,078 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:15:33,400 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:15:34,083 WARN L192 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 45 [2019-11-24 04:15:34,884 WARN L192 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 65 [2019-11-24 04:15:35,014 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:15:35,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:15:35,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2019-11-24 04:15:35,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086008065] [2019-11-24 04:15:35,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-24 04:15:35,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:15:35,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-24 04:15:35,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2019-11-24 04:15:35,019 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 14 states. [2019-11-24 04:15:35,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:15:35,511 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2019-11-24 04:15:35,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-24 04:15:35,512 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 8 [2019-11-24 04:15:35,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:15:35,513 INFO L225 Difference]: With dead ends: 19 [2019-11-24 04:15:35,513 INFO L226 Difference]: Without dead ends: 15 [2019-11-24 04:15:35,514 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2019-11-24 04:15:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-24 04:15:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-24 04:15:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-24 04:15:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-24 04:15:35,519 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2019-11-24 04:15:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:15:35,519 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-24 04:15:35,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-24 04:15:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-24 04:15:35,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 04:15:35,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:15:35,520 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2019-11-24 04:15:35,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:15:35,724 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:15:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:15:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2058949920, now seen corresponding path program 3 times [2019-11-24 04:15:35,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:15:35,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862018070] [2019-11-24 04:15:35,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:15:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:15:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:15:35,806 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-24 04:15:35,806 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-24 04:15:35,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:15:35 BoogieIcfgContainer [2019-11-24 04:15:35,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:15:35,835 INFO L168 Benchmark]: Toolchain (without parser) took 7032.28 ms. Allocated memory was 138.9 MB in the beginning and 269.5 MB in the end (delta: 130.5 MB). Free memory was 102.5 MB in the beginning and 192.4 MB in the end (delta: -89.9 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:15:35,837 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-24 04:15:35,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.42 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 93.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-11-24 04:15:35,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.36 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.1 MB in the beginning and 182.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:15:35,845 INFO L168 Benchmark]: Boogie Preprocessor took 20.00 ms. Allocated memory is still 202.9 MB. Free memory was 182.2 MB in the beginning and 181.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-11-24 04:15:35,846 INFO L168 Benchmark]: RCFGBuilder took 241.48 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 169.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-11-24 04:15:35,847 INFO L168 Benchmark]: TraceAbstraction took 6406.18 ms. Allocated memory was 202.9 MB in the beginning and 269.5 MB in the end (delta: 66.6 MB). Free memory was 169.7 MB in the beginning and 192.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:15:35,860 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.42 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 93.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 107.36 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.1 MB in the beginning and 182.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.00 ms. Allocated memory is still 202.9 MB. Free memory was 182.2 MB in the beginning and 181.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 241.48 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 169.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6406.18 ms. Allocated memory was 202.9 MB in the beginning and 269.5 MB in the end (delta: 66.6 MB). Free memory was 169.7 MB in the beginning and 192.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 43.9 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] unsigned int x = 0; [L12] unsigned int y = 1; [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 [L14] COND FALSE !(x < 6) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: UNSAFE, OverallTime: 6.3s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 27 SDslu, 24 SDs, 0 SdLazy, 78 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1136 SizeOfPredicates, 4 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 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...