/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-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:19:43,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:19:43,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:19:43,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:19:43,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:19:43,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:19:43,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:19:43,395 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 04:19:43,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:19:43,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:19:43,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:19:43,412 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:19:43,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:19:43,412 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:19:43,412 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:19:43,413 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:19:43,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:19:43,413 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:19:43,413 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:19:43,413 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:19:43,414 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:19:43,414 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:19:43,414 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:19:43,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:19:43,415 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:19:43,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:19:43,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:19:43,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:19:43,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:19:43,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:19:43,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:19:43,416 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:19:43,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:19:43,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:19:43,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:19:43,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:19:43,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:19:43,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:19:43,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:19:43,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:19:43,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:19:43,420 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:19:43,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:19:43,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:19:43,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:19:43,421 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:19:43,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:19:43,749 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:19:43,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:19:43,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:19:43,758 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:19:43,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2019-11-24 04:19:43,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7a25a68/88602abe65454ecb87515a388df4ad8e/FLAGadf4364dc [2019-11-24 04:19:44,297 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:19:44,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2019-11-24 04:19:44,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7a25a68/88602abe65454ecb87515a388df4ad8e/FLAGadf4364dc [2019-11-24 04:19:44,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7a25a68/88602abe65454ecb87515a388df4ad8e [2019-11-24 04:19:44,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:19:44,703 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:19:44,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:19:44,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:19:44,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:19:44,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:44,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cce649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44, skipping insertion in model container [2019-11-24 04:19:44,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:44,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:19:44,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:19:44,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:19:44,908 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:19:44,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:19:44,949 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:19:44,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44 WrapperNode [2019-11-24 04:19:44,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:19:44,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:19:44,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:19:44,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:19:44,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:44,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:45,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:19:45,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:19:45,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:19:45,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:19:45,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:45,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:45,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:45,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:45,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:45,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:45,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (1/1) ... [2019-11-24 04:19:45,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:19:45,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:19:45,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:19:45,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:19:45,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (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 04:19:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:19:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:19:45,496 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:19:45,497 INFO L284 CfgBuilder]: Removed 21 assume(true) statements. [2019-11-24 04:19:45,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:19:45 BoogieIcfgContainer [2019-11-24 04:19:45,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:19:45,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:19:45,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:19:45,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:19:45,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:19:44" (1/3) ... [2019-11-24 04:19:45,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518455bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:19:45, skipping insertion in model container [2019-11-24 04:19:45,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:19:44" (2/3) ... [2019-11-24 04:19:45,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518455bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:19:45, skipping insertion in model container [2019-11-24 04:19:45,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:19:45" (3/3) ... [2019-11-24 04:19:45,507 INFO L109 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2019-11-24 04:19:45,520 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:19:45,527 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-24 04:19:45,539 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-24 04:19:45,565 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:19:45,566 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:19:45,566 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:19:45,566 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:19:45,566 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:19:45,566 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:19:45,566 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:19:45,566 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:19:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-11-24 04:19:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:19:45,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:45,602 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:19:45,603 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:45,613 INFO L82 PathProgramCache]: Analyzing trace with hash -396103483, now seen corresponding path program 1 times [2019-11-24 04:19:45,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:45,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797353125] [2019-11-24 04:19:45,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:45,727 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 04:19:45,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797353125] [2019-11-24 04:19:45,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:19:45,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:19:45,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874711665] [2019-11-24 04:19:45,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:19:45,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:19:45,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:19:45,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:19:45,753 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2019-11-24 04:19:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:19:45,776 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2019-11-24 04:19:45,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:19:45,777 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:19:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:19:45,788 INFO L225 Difference]: With dead ends: 78 [2019-11-24 04:19:45,788 INFO L226 Difference]: Without dead ends: 38 [2019-11-24 04:19:45,791 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:19:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-24 04:19:45,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-24 04:19:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-24 04:19:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2019-11-24 04:19:45,828 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 8 [2019-11-24 04:19:45,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:19:45,829 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2019-11-24 04:19:45,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:19:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2019-11-24 04:19:45,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:19:45,830 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:45,830 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:19:45,831 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:45,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:45,831 INFO L82 PathProgramCache]: Analyzing trace with hash 551382066, now seen corresponding path program 1 times [2019-11-24 04:19:45,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:45,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551611796] [2019-11-24 04:19:45,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:45,901 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 04:19:45,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551611796] [2019-11-24 04:19:45,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:19:45,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:19:45,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721976920] [2019-11-24 04:19:45,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:19:45,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:19:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:19:45,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:19:45,906 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 4 states. [2019-11-24 04:19:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:19:46,001 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2019-11-24 04:19:46,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:19:46,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-24 04:19:46,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:19:46,002 INFO L225 Difference]: With dead ends: 42 [2019-11-24 04:19:46,003 INFO L226 Difference]: Without dead ends: 36 [2019-11-24 04:19:46,004 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:19:46,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-24 04:19:46,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2019-11-24 04:19:46,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-24 04:19:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2019-11-24 04:19:46,012 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 9 [2019-11-24 04:19:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:19:46,012 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2019-11-24 04:19:46,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:19:46,013 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2019-11-24 04:19:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:19:46,013 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:46,014 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:19:46,014 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:46,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1597345877, now seen corresponding path program 1 times [2019-11-24 04:19:46,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:46,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066832736] [2019-11-24 04:19:46,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:46,082 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 04:19:46,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066832736] [2019-11-24 04:19:46,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:19:46,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:19:46,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101087239] [2019-11-24 04:19:46,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:19:46,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:19:46,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:19:46,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:19:46,085 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 5 states. [2019-11-24 04:19:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:19:46,236 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2019-11-24 04:19:46,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:19:46,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-24 04:19:46,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:19:46,238 INFO L225 Difference]: With dead ends: 48 [2019-11-24 04:19:46,238 INFO L226 Difference]: Without dead ends: 44 [2019-11-24 04:19:46,238 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:19:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-24 04:19:46,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-11-24 04:19:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-24 04:19:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-11-24 04:19:46,248 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 11 [2019-11-24 04:19:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:19:46,248 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-11-24 04:19:46,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:19:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-11-24 04:19:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:19:46,249 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:46,249 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:19:46,250 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:46,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:46,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1050645099, now seen corresponding path program 1 times [2019-11-24 04:19:46,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:46,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57132002] [2019-11-24 04:19:46,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:46,302 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 04:19:46,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57132002] [2019-11-24 04:19:46,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:19:46,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:19:46,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924081649] [2019-11-24 04:19:46,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:19:46,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:19:46,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:19:46,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:19:46,305 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 4 states. [2019-11-24 04:19:46,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:19:46,369 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2019-11-24 04:19:46,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:19:46,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-24 04:19:46,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:19:46,371 INFO L225 Difference]: With dead ends: 42 [2019-11-24 04:19:46,371 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 04:19:46,372 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:19:46,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 04:19:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 04:19:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 04:19:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-11-24 04:19:46,380 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 13 [2019-11-24 04:19:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:19:46,381 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2019-11-24 04:19:46,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:19:46,381 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2019-11-24 04:19:46,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:19:46,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:46,382 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:19:46,382 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:46,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:46,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1213350277, now seen corresponding path program 1 times [2019-11-24 04:19:46,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:46,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464559505] [2019-11-24 04:19:46,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:46,490 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 04:19:46,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464559505] [2019-11-24 04:19:46,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:19:46,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 04:19:46,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129241437] [2019-11-24 04:19:46,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:19:46,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:19:46,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:19:46,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:19:46,494 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2019-11-24 04:19:46,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:19:46,693 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2019-11-24 04:19:46,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:19:46,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-24 04:19:46,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:19:46,695 INFO L225 Difference]: With dead ends: 68 [2019-11-24 04:19:46,695 INFO L226 Difference]: Without dead ends: 54 [2019-11-24 04:19:46,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-24 04:19:46,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-24 04:19:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2019-11-24 04:19:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-24 04:19:46,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-11-24 04:19:46,704 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 15 [2019-11-24 04:19:46,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:19:46,704 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-11-24 04:19:46,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:19:46,704 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-11-24 04:19:46,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:19:46,705 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:46,705 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:19:46,705 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:46,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:46,706 INFO L82 PathProgramCache]: Analyzing trace with hash -352468520, now seen corresponding path program 1 times [2019-11-24 04:19:46,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:46,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052235384] [2019-11-24 04:19:46,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:46,765 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 04:19:46,765 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052235384] [2019-11-24 04:19:46,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:19:46,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 04:19:46,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632468635] [2019-11-24 04:19:46,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:19:46,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:19:46,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:19:46,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:19:46,767 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2019-11-24 04:19:46,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:19:46,895 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2019-11-24 04:19:46,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:19:46,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-24 04:19:46,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:19:46,897 INFO L225 Difference]: With dead ends: 59 [2019-11-24 04:19:46,897 INFO L226 Difference]: Without dead ends: 57 [2019-11-24 04:19:46,897 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-24 04:19:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-24 04:19:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2019-11-24 04:19:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-24 04:19:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-11-24 04:19:46,905 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 15 [2019-11-24 04:19:46,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:19:46,905 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2019-11-24 04:19:46,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:19:46,906 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2019-11-24 04:19:46,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-24 04:19:46,906 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:19:46,907 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:19:46,907 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:19:46,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:19:46,908 INFO L82 PathProgramCache]: Analyzing trace with hash 988547556, now seen corresponding path program 1 times [2019-11-24 04:19:46,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:19:46,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391884036] [2019-11-24 04:19:46,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:19:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:19:47,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391884036] [2019-11-24 04:19:47,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133963286] [2019-11-24 04:19:47,024 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 04:19:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:19:47,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-24 04:19:47,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:19:47,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:19:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:19:47,270 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:19:47,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:19:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:19:47,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1145849196] [2019-11-24 04:19:47,394 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2019-11-24 04:19:47,394 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:19:47,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:19:47,413 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:19:47,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:19:48,231 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 145 [2019-11-24 04:19:48,397 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 184 [2019-11-24 04:19:48,567 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 179 [2019-11-24 04:19:48,807 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 230 [2019-11-24 04:19:49,088 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 221 [2019-11-24 04:19:49,447 WARN L192 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 287 [2019-11-24 04:19:49,823 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 277 [2019-11-24 04:19:50,262 WARN L192 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 365 [2019-11-24 04:19:50,790 WARN L192 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 357 [2019-11-24 04:19:51,249 WARN L192 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2019-11-24 04:19:51,597 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 359 [2019-11-24 04:19:52,083 WARN L192 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 485 DAG size of output: 478 [2019-11-24 04:19:52,715 WARN L192 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 479 DAG size of output: 473 [2019-11-24 04:19:53,685 WARN L192 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 649 DAG size of output: 639 [2019-11-24 04:19:54,647 WARN L192 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 638 DAG size of output: 633 [2019-11-24 04:19:56,189 WARN L192 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 817 DAG size of output: 811 [2019-11-24 04:19:58,325 WARN L192 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 811 DAG size of output: 803 [2019-11-24 04:20:00,777 WARN L192 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 1036 DAG size of output: 1028 [2019-11-24 04:20:03,375 WARN L192 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 1028 DAG size of output: 1023 [2019-11-24 04:20:07,528 WARN L192 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 1332 DAG size of output: 1325 [2019-11-24 04:20:12,110 WARN L192 SmtUtils]: Spent 3.99 s on a formula simplification. DAG size of input: 1325 DAG size of output: 1317 [2019-11-24 04:20:16,915 WARN L192 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 1324 [2019-11-24 04:20:21,900 WARN L192 SmtUtils]: Spent 4.63 s on a formula simplification. DAG size of input: 1325 DAG size of output: 1319 [2019-11-24 04:20:26,641 WARN L192 SmtUtils]: Spent 4.00 s on a formula simplification that was a NOOP. DAG size: 1328 [2019-11-24 04:20:30,918 WARN L192 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 1329 DAG size of output: 1324 [2019-11-24 04:20:37,597 WARN L192 SmtUtils]: Spent 6.38 s on a formula simplification. DAG size of input: 1676 DAG size of output: 1667 [2019-11-24 04:20:44,533 WARN L192 SmtUtils]: Spent 6.42 s on a formula simplification. DAG size of input: 1667 DAG size of output: 1658 [2019-11-24 04:20:54,210 WARN L192 SmtUtils]: Spent 9.36 s on a formula simplification. DAG size of input: 2090 DAG size of output: 2078 [2019-11-24 04:21:04,937 WARN L192 SmtUtils]: Spent 9.80 s on a formula simplification. DAG size of input: 2077 DAG size of output: 2066 [2019-11-24 04:21:16,003 WARN L192 SmtUtils]: Spent 9.99 s on a formula simplification that was a NOOP. DAG size: 2072 [2019-11-24 04:21:26,234 WARN L192 SmtUtils]: Spent 10.22 s on a formula simplification. DAG size of input: 2073 DAG size of output: 2068