/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/array-examples/standard_copy3_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:04:22,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:04:22,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:04:22,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 23:04:22,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:04:22,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:04:22,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:04:22,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:04:22,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:04:22,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:04:22,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:04:22,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:04:22,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:04:22,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:04:22,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:04:22,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:04:22,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:04:22,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:04:22,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:04:22,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:04:22,250 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 [2019-11-23 23:04:22,265 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:04:22,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:04:22,266 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:04:22,266 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:04:22,267 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:04:22,267 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:04:22,267 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:04:22,267 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:04:22,267 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:04:22,268 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:04:22,268 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:04:22,268 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:04:22,268 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:04:22,268 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:04:22,269 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:04:22,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:04:22,269 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:04:22,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:04:22,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:04:22,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:04:22,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:04:22,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:04:22,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:04:22,271 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:04:22,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:04:22,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:04:22,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:04:22,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:04:22,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:04:22,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:04:22,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:04:22,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:04:22,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:04:22,273 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:04:22,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:04:22,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:04:22,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:04:22,274 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:04:22,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:04:22,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:04:22,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:04:22,566 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:04:22,567 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:04:22,567 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy3_ground-2.i [2019-11-23 23:04:22,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824e4f6ea/037330b67dee408f9fb14e23debf7f02/FLAG393c34c20 [2019-11-23 23:04:23,104 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:04:23,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy3_ground-2.i [2019-11-23 23:04:23,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824e4f6ea/037330b67dee408f9fb14e23debf7f02/FLAG393c34c20 [2019-11-23 23:04:23,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824e4f6ea/037330b67dee408f9fb14e23debf7f02 [2019-11-23 23:04:23,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:04:23,473 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:04:23,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:04:23,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:04:23,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:04:23,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a267138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23, skipping insertion in model container [2019-11-23 23:04:23,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:04:23,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:04:23,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:04:23,696 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:04:23,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:04:23,758 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:04:23,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23 WrapperNode [2019-11-23 23:04:23,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:04:23,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:04:23,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:04:23,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:04:23,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:04:23,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:04:23,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:04:23,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:04:23,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (1/1) ... [2019-11-23 23:04:23,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:04:23,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:04:23,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:04:23,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:04:23,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (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 [2019-11-23 23:04:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:04:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:04:23,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:04:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:04:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:04:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:04:24,424 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:04:24,424 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-23 23:04:24,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:04:24 BoogieIcfgContainer [2019-11-23 23:04:24,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:04:24,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:04:24,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:04:24,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:04:24,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:04:23" (1/3) ... [2019-11-23 23:04:24,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b385491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:04:24, skipping insertion in model container [2019-11-23 23:04:24,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:23" (2/3) ... [2019-11-23 23:04:24,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b385491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:04:24, skipping insertion in model container [2019-11-23 23:04:24,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:04:24" (3/3) ... [2019-11-23 23:04:24,434 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy3_ground-2.i [2019-11-23 23:04:24,443 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:04:24,451 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:04:24,462 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:04:24,482 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:04:24,483 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:04:24,483 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:04:24,483 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:04:24,483 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:04:24,483 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:04:24,483 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:04:24,484 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:04:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-23 23:04:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:04:24,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:04:24,506 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:04:24,507 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:04:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:04:24,513 INFO L82 PathProgramCache]: Analyzing trace with hash 119092105, now seen corresponding path program 1 times [2019-11-23 23:04:24,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:04:24,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129326108] [2019-11-23 23:04:24,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:04:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:04:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:04:24,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129326108] [2019-11-23 23:04:24,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:04:24,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:04:24,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999174018] [2019-11-23 23:04:24,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:04:24,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:04:24,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:04:24,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:04:24,692 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-23 23:04:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:04:24,723 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-23 23:04:24,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:04:24,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 23:04:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:04:24,733 INFO L225 Difference]: With dead ends: 21 [2019-11-23 23:04:24,733 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 23:04:24,737 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:04:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 23:04:24,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 23:04:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 23:04:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2019-11-23 23:04:24,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 8 [2019-11-23 23:04:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:04:24,766 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-23 23:04:24,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:04:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2019-11-23 23:04:24,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 23:04:24,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:04:24,767 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:04:24,767 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:04:24,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:04:24,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1031888984, now seen corresponding path program 1 times [2019-11-23 23:04:24,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:04:24,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381509769] [2019-11-23 23:04:24,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:04:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:04:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:04:24,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381509769] [2019-11-23 23:04:24,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:04:24,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:04:24,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850717403] [2019-11-23 23:04:24,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:04:24,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:04:24,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:04:24,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:04:24,828 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand 3 states. [2019-11-23 23:04:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:04:24,862 INFO L93 Difference]: Finished difference Result 21 states and 30 transitions. [2019-11-23 23:04:24,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:04:24,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-23 23:04:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:04:24,863 INFO L225 Difference]: With dead ends: 21 [2019-11-23 23:04:24,863 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 23:04:24,864 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:04:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 23:04:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-23 23:04:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 23:04:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-11-23 23:04:24,869 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 9 [2019-11-23 23:04:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:04:24,870 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-23 23:04:24,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:04:24,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2019-11-23 23:04:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 23:04:24,871 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:04:24,871 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:04:24,871 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:04:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:04:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1069415574, now seen corresponding path program 1 times [2019-11-23 23:04:24,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:04:24,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971150992] [2019-11-23 23:04:24,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:04:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:04:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 23:04:24,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971150992] [2019-11-23 23:04:24,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604440582] [2019-11-23 23:04:24,983 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 [2019-11-23 23:04:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:04:25,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:04:25,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:04:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 23:04:25,078 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:04:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 23:04:25,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2002330742] [2019-11-23 23:04:25,144 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-23 23:04:25,150 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:04:25,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:04:25,175 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:04:25,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:04:25,608 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2019-11-23 23:04:26,712 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 153 [2019-11-23 23:04:26,880 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 153 [2019-11-23 23:04:27,525 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-11-23 23:04:27,665 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 174 [2019-11-23 23:04:27,816 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 174 [2019-11-23 23:04:28,701 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-23 23:04:28,877 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2019-11-23 23:04:29,022 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 193 [2019-11-23 23:04:29,204 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2019-11-23 23:04:29,378 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 201 [2019-11-23 23:04:29,555 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2019-11-23 23:04:29,687 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 205 [2019-11-23 23:04:31,564 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 221 [2019-11-23 23:04:31,719 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2019-11-23 23:04:31,852 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2019-11-23 23:04:33,806 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2019-11-23 23:04:34,043 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 212 [2019-11-23 23:04:36,187 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 229 [2019-11-23 23:04:36,654 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 217 [2019-11-23 23:04:39,049 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 236 [2019-11-23 23:04:39,304 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 220 [2019-11-23 23:04:42,421 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 243 [2019-11-23 23:04:45,650 WARN L192 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 247 [2019-11-23 23:04:45,811 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-11-23 23:04:45,934 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 230 [2019-11-23 23:04:48,628 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 250 [2019-11-23 23:04:51,551 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 252 [2019-11-23 23:04:51,785 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 239 [2019-11-23 23:04:54,522 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 254 [2019-11-23 23:04:57,662 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2019-11-23 23:04:57,795 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2019-11-23 23:04:57,912 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 247 [2019-11-23 23:05:00,751 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2019-11-23 23:05:00,991 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 245 [2019-11-23 23:05:04,373 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 268 [2019-11-23 23:05:04,603 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 249 [2019-11-23 23:05:07,715 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 270 [2019-11-23 23:05:10,858 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2019-11-23 23:05:11,084 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 256 [2019-11-23 23:05:14,487 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 276 [2019-11-23 23:05:14,793 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 258 [2019-11-23 23:05:18,429 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 280 [2019-11-23 23:05:22,027 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 282 [2019-11-23 23:05:22,157 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2019-11-23 23:05:22,271 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 266 [2019-11-23 23:05:25,628 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 285 [2019-11-23 23:05:29,438 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 288 [2019-11-23 23:05:29,685 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 274 [2019-11-23 23:05:33,439 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 292 [2019-11-23 23:05:33,568 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-23 23:05:33,699 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 277 [2019-11-23 23:05:37,437 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 295 [2019-11-23 23:05:37,575 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2019-11-23 23:05:37,700 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 280 [2019-11-23 23:05:41,602 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 298 [2019-11-23 23:05:41,734 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2019-11-23 23:05:41,865 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 281 [2019-11-23 23:05:42,113 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 283 [2019-11-23 23:05:46,506 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 305 [2019-11-23 23:05:46,737 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 285 [2019-11-23 23:05:51,411 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 313 [2019-11-23 23:05:51,640 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 291 [2019-11-23 23:05:56,405 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 314