/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/product-lines/minepump_spec5_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:34:31,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:34:31,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:34:31,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 05:34:31,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:34:31,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:34:31,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:34:31,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:34:31,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:34:31,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:34:31,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:34:31,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:34:31,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:34:31,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:34:31,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:34:31,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:34:31,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:34:31,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:34:31,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:34:31,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:34:31,246 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 05:34:31,267 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:34:31,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:34:31,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:34:31,268 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:34:31,268 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:34:31,268 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:34:31,269 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:34:31,269 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:34:31,269 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:34:31,269 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:34:31,269 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:34:31,270 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:34:31,270 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:34:31,270 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:34:31,270 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:34:31,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:34:31,271 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:34:31,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:34:31,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:34:31,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:34:31,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:34:31,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:34:31,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:34:31,272 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:34:31,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:34:31,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:34:31,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:34:31,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:34:31,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:34:31,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:34:31,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:34:31,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:34:31,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:34:31,274 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:34:31,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:34:31,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:34:31,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:34:31,275 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:34:31,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:34:31,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:34:31,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:34:31,603 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:34:31,604 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:34:31,605 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product41.cil.c [2019-11-24 05:34:31,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddeccbbc/fc21b30fae1b48be96abbf8e5c6c1051/FLAG73aea78a2 [2019-11-24 05:34:32,204 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:34:32,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product41.cil.c [2019-11-24 05:34:32,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddeccbbc/fc21b30fae1b48be96abbf8e5c6c1051/FLAG73aea78a2 [2019-11-24 05:34:32,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddeccbbc/fc21b30fae1b48be96abbf8e5c6c1051 [2019-11-24 05:34:32,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:34:32,537 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:34:32,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:34:32,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:34:32,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:34:32,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:34:32" (1/1) ... [2019-11-24 05:34:32,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4837be06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:32, skipping insertion in model container [2019-11-24 05:34:32,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:34:32" (1/1) ... [2019-11-24 05:34:32,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:34:32,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:34:33,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:34:33,100 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:34:33,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:34:33,217 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:34:33,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33 WrapperNode [2019-11-24 05:34:33,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:34:33,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:34:33,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:34:33,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:34:33,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (1/1) ... [2019-11-24 05:34:33,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (1/1) ... [2019-11-24 05:34:33,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:34:33,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:34:33,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:34:33,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:34:33,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (1/1) ... [2019-11-24 05:34:33,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (1/1) ... [2019-11-24 05:34:33,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (1/1) ... [2019-11-24 05:34:33,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (1/1) ... [2019-11-24 05:34:33,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (1/1) ... [2019-11-24 05:34:33,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (1/1) ... [2019-11-24 05:34:33,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (1/1) ... [2019-11-24 05:34:33,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:34:33,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:34:33,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:34:33,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:34:33,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (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 05:34:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:34:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:34:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:34:33,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:34:35,276 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:34:35,276 INFO L284 CfgBuilder]: Removed 128 assume(true) statements. [2019-11-24 05:34:35,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:34:35 BoogieIcfgContainer [2019-11-24 05:34:35,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:34:35,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:34:35,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:34:35,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:34:35,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:34:32" (1/3) ... [2019-11-24 05:34:35,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24eebe92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:34:35, skipping insertion in model container [2019-11-24 05:34:35,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:33" (2/3) ... [2019-11-24 05:34:35,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24eebe92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:34:35, skipping insertion in model container [2019-11-24 05:34:35,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:34:35" (3/3) ... [2019-11-24 05:34:35,291 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product41.cil.c [2019-11-24 05:34:35,301 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:34:35,309 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:34:35,321 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:34:35,350 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:34:35,350 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:34:35,350 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:34:35,350 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:34:35,351 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:34:35,351 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:34:35,351 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:34:35,351 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:34:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:34:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:34:35,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:34:35,376 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:34:35,377 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:34:35,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:34:35,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1302875906, now seen corresponding path program 1 times [2019-11-24 05:34:35,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:34:35,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893209191] [2019-11-24 05:34:35,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:34:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:35,668 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 05:34:35,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893209191] [2019-11-24 05:34:35,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:34:35,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:34:35,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078712389] [2019-11-24 05:34:35,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:34:35,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:34:35,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:34:35,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:34:35,692 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:34:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:34:35,713 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:34:35,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:34:35,714 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:34:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:34:35,726 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:34:35,726 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:34:35,732 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 05:34:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:34:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:34:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:34:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:34:35,790 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:34:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:34:35,791 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:34:35,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:34:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:34:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:34:35,793 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:34:35,794 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:34:35,794 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:34:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:34:35,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1509166455, now seen corresponding path program 1 times [2019-11-24 05:34:35,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:34:35,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075036336] [2019-11-24 05:34:35,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:34:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:36,149 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 05:34:36,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075036336] [2019-11-24 05:34:36,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:34:36,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:34:36,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022045943] [2019-11-24 05:34:36,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:34:36,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:34:36,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:34:36,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:34:36,152 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 5 states. [2019-11-24 05:34:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:34:36,301 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2019-11-24 05:34:36,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:34:36,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:34:36,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:34:36,303 INFO L225 Difference]: With dead ends: 80 [2019-11-24 05:34:36,303 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:34:36,304 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:34:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:34:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:34:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:34:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:34:36,311 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:34:36,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:34:36,312 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:34:36,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:34:36,312 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:34:36,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:34:36,313 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:34:36,313 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:34:36,313 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:34:36,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:34:36,314 INFO L82 PathProgramCache]: Analyzing trace with hash -470298270, now seen corresponding path program 1 times [2019-11-24 05:34:36,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:34:36,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524684853] [2019-11-24 05:34:36,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:34:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:34:36,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524684853] [2019-11-24 05:34:36,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730000267] [2019-11-24 05:34:36,510 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 05:34:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:36,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 05:34:36,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:34:36,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,863 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 15 [2019-11-24 05:34:36,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:34:36,886 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:34:36,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:34:36,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1833913536] [2019-11-24 05:34:36,981 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:34:36,982 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:34:36,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:34:36,998 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:34:36,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:34:46,402 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:34:48,230 WARN L192 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:34:48,369 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:34:49,006 WARN L192 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 619 DAG size of output: 609 [2019-11-24 05:34:50,531 WARN L192 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 710 [2019-11-24 05:34:52,499 WARN L192 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 795 DAG size of output: 775 [2019-11-24 05:34:56,942 WARN L192 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 777 DAG size of output: 777 [2019-11-24 05:35:11,063 WARN L192 SmtUtils]: Spent 8.32 s on a formula simplification. DAG size of input: 1501 DAG size of output: 1170 [2019-11-24 05:35:19,497 WARN L192 SmtUtils]: Spent 8.42 s on a formula simplification. DAG size of input: 1501 DAG size of output: 1170 [2019-11-24 05:35:26,884 WARN L192 SmtUtils]: Spent 7.38 s on a formula simplification. DAG size of input: 1130 DAG size of output: 1078 [2019-11-24 05:35:26,896 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:35:31,928 WARN L192 SmtUtils]: Spent 4.93 s on a formula simplification. DAG size of input: 486 DAG size of output: 431