/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/elevator_spec1_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:38:18,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:38:18,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:38:18,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:38:18,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:38:18,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:38:18,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:38:18,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:38:18,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:38:18,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:38:18,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:38:18,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:38:18,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:38:18,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:38:18,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:38:18,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:38:18,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:38:18,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:38:18,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:38:18,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:38:18,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:38:18,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:38:18,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:38:18,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:38:18,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:38:18,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:38:18,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:38:18,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:38:18,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:38:18,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:38:18,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:38:18,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:38:18,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:38:18,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:38:18,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:38:18,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:38:18,630 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 04:38:18,652 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:38:18,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:38:18,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:38:18,654 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:38:18,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:38:18,654 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:38:18,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:38:18,655 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:38:18,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:38:18,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:38:18,656 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:38:18,656 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:38:18,657 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:38:18,657 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:38:18,657 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:38:18,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:38:18,658 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:38:18,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:38:18,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:38:18,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:38:18,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:38:18,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:38:18,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:38:18,661 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:38:18,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:38:18,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:38:18,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:38:18,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:38:18,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:38:18,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:38:18,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:38:18,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:38:18,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:38:18,665 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:38:18,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:38:18,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:38:18,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:38:18,666 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:38:18,929 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:38:18,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:38:18,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:38:18,950 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:38:18,951 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:38:18,951 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product22.cil.c [2019-11-24 04:38:19,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dd89a671/55773f8b47054ae3bab31c7bd8a0bbb4/FLAG8ed2b5c3e [2019-11-24 04:38:19,586 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:38:19,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product22.cil.c [2019-11-24 04:38:19,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dd89a671/55773f8b47054ae3bab31c7bd8a0bbb4/FLAG8ed2b5c3e [2019-11-24 04:38:19,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dd89a671/55773f8b47054ae3bab31c7bd8a0bbb4 [2019-11-24 04:38:19,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:38:19,858 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:38:19,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:38:19,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:38:19,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:38:19,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:38:19" (1/1) ... [2019-11-24 04:38:19,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2ab5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:19, skipping insertion in model container [2019-11-24 04:38:19,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:38:19" (1/1) ... [2019-11-24 04:38:19,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:38:19,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:38:20,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:38:20,780 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:38:20,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:38:21,006 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:38:21,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21 WrapperNode [2019-11-24 04:38:21,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:38:21,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:38:21,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:38:21,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:38:21,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (1/1) ... [2019-11-24 04:38:21,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (1/1) ... [2019-11-24 04:38:21,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:38:21,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:38:21,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:38:21,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:38:21,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (1/1) ... [2019-11-24 04:38:21,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (1/1) ... [2019-11-24 04:38:21,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (1/1) ... [2019-11-24 04:38:21,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (1/1) ... [2019-11-24 04:38:21,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (1/1) ... [2019-11-24 04:38:21,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (1/1) ... [2019-11-24 04:38:21,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (1/1) ... [2019-11-24 04:38:21,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:38:21,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:38:21,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:38:21,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:38:21,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (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 04:38:21,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:38:21,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:38:21,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:38:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:39:15,696 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:39:15,696 INFO L284 CfgBuilder]: Removed 1433 assume(true) statements. [2019-11-24 04:39:15,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:39:15 BoogieIcfgContainer [2019-11-24 04:39:15,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:39:15,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:39:15,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:39:15,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:39:15,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:38:19" (1/3) ... [2019-11-24 04:39:15,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728adfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:39:15, skipping insertion in model container [2019-11-24 04:39:15,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:21" (2/3) ... [2019-11-24 04:39:15,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728adfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:39:15, skipping insertion in model container [2019-11-24 04:39:15,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:39:15" (3/3) ... [2019-11-24 04:39:15,710 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2019-11-24 04:39:15,720 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:39:15,730 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 04:39:15,743 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 04:39:15,783 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:39:15,784 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:39:15,784 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:39:15,784 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:39:15,784 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:39:15,784 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:39:15,785 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:39:15,785 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:39:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states. [2019-11-24 04:39:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:39:15,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:15,847 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:39:15,848 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:15,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:15,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1184494640, now seen corresponding path program 1 times [2019-11-24 04:39:15,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:15,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999423154] [2019-11-24 04:39:15,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:16,269 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 04:39:16,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999423154] [2019-11-24 04:39:16,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:16,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:39:16,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302431126] [2019-11-24 04:39:16,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:39:16,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:16,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:39:16,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:39:16,293 INFO L87 Difference]: Start difference. First operand 2417 states. Second operand 2 states. [2019-11-24 04:39:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:16,423 INFO L93 Difference]: Finished difference Result 2434 states and 4707 transitions. [2019-11-24 04:39:16,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:39:16,425 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-24 04:39:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:16,467 INFO L225 Difference]: With dead ends: 2434 [2019-11-24 04:39:16,467 INFO L226 Difference]: Without dead ends: 2415 [2019-11-24 04:39:16,474 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 04:39:16,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2019-11-24 04:39:16,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2415. [2019-11-24 04:39:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2415 states. [2019-11-24 04:39:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4677 transitions. [2019-11-24 04:39:16,633 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4677 transitions. Word has length 12 [2019-11-24 04:39:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:16,633 INFO L462 AbstractCegarLoop]: Abstraction has 2415 states and 4677 transitions. [2019-11-24 04:39:16,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:39:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4677 transitions. [2019-11-24 04:39:16,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:39:16,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:16,637 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:39:16,637 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:16,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1870542226, now seen corresponding path program 1 times [2019-11-24 04:39:16,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:16,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248416769] [2019-11-24 04:39:16,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:16,830 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 04:39:16,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248416769] [2019-11-24 04:39:16,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:16,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:39:16,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281806670] [2019-11-24 04:39:16,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:39:16,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:16,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:39:16,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:39:16,834 INFO L87 Difference]: Start difference. First operand 2415 states and 4677 transitions. Second operand 3 states. [2019-11-24 04:39:16,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:16,993 INFO L93 Difference]: Finished difference Result 3639 states and 7042 transitions. [2019-11-24 04:39:16,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:39:16,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 04:39:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:17,009 INFO L225 Difference]: With dead ends: 3639 [2019-11-24 04:39:17,009 INFO L226 Difference]: Without dead ends: 2411 [2019-11-24 04:39:17,018 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 [2019-11-24 04:39:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2019-11-24 04:39:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2411. [2019-11-24 04:39:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2019-11-24 04:39:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 4669 transitions. [2019-11-24 04:39:17,102 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 4669 transitions. Word has length 13 [2019-11-24 04:39:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:17,102 INFO L462 AbstractCegarLoop]: Abstraction has 2411 states and 4669 transitions. [2019-11-24 04:39:17,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:39:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 4669 transitions. [2019-11-24 04:39:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:39:17,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:17,106 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:39:17,106 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash -594047463, now seen corresponding path program 1 times [2019-11-24 04:39:17,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:17,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539158605] [2019-11-24 04:39:17,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:17,276 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 04:39:17,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539158605] [2019-11-24 04:39:17,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:17,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:39:17,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436181130] [2019-11-24 04:39:17,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:39:17,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:39:17,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:39:17,279 INFO L87 Difference]: Start difference. First operand 2411 states and 4669 transitions. Second operand 3 states. [2019-11-24 04:39:17,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:17,450 INFO L93 Difference]: Finished difference Result 4833 states and 9358 transitions. [2019-11-24 04:39:17,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:39:17,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-24 04:39:17,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:17,470 INFO L225 Difference]: With dead ends: 4833 [2019-11-24 04:39:17,470 INFO L226 Difference]: Without dead ends: 3620 [2019-11-24 04:39:17,474 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 [2019-11-24 04:39:17,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2019-11-24 04:39:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3620. [2019-11-24 04:39:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3620 states. [2019-11-24 04:39:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 7013 transitions. [2019-11-24 04:39:17,575 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 7013 transitions. Word has length 15 [2019-11-24 04:39:17,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:17,576 INFO L462 AbstractCegarLoop]: Abstraction has 3620 states and 7013 transitions. [2019-11-24 04:39:17,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:39:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 7013 transitions. [2019-11-24 04:39:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 04:39:17,578 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:17,578 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:39:17,579 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:17,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:17,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1235563970, now seen corresponding path program 1 times [2019-11-24 04:39:17,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:17,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585453702] [2019-11-24 04:39:17,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:17,707 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 04:39:17,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585453702] [2019-11-24 04:39:17,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:17,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:39:17,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110269910] [2019-11-24 04:39:17,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:39:17,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:17,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:39:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:39:17,710 INFO L87 Difference]: Start difference. First operand 3620 states and 7013 transitions. Second operand 4 states. [2019-11-24 04:39:20,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:20,640 INFO L93 Difference]: Finished difference Result 10165 states and 19619 transitions. [2019-11-24 04:39:20,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:39:20,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-24 04:39:20,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:20,679 INFO L225 Difference]: With dead ends: 10165 [2019-11-24 04:39:20,679 INFO L226 Difference]: Without dead ends: 7023 [2019-11-24 04:39:20,689 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 04:39:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7023 states. [2019-11-24 04:39:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7023 to 4195. [2019-11-24 04:39:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4195 states. [2019-11-24 04:39:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 7805 transitions. [2019-11-24 04:39:20,898 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 7805 transitions. Word has length 16 [2019-11-24 04:39:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:20,898 INFO L462 AbstractCegarLoop]: Abstraction has 4195 states and 7805 transitions. [2019-11-24 04:39:20,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:39:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 7805 transitions. [2019-11-24 04:39:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 04:39:20,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:20,901 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:39:20,907 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:20,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:20,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1899440879, now seen corresponding path program 1 times [2019-11-24 04:39:20,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:20,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387754241] [2019-11-24 04:39:20,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:21,084 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 04:39:21,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387754241] [2019-11-24 04:39:21,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:21,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:39:21,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725040254] [2019-11-24 04:39:21,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:39:21,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:21,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:39:21,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:39:21,090 INFO L87 Difference]: Start difference. First operand 4195 states and 7805 transitions. Second operand 5 states. [2019-11-24 04:39:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:22,144 INFO L93 Difference]: Finished difference Result 7572 states and 14148 transitions. [2019-11-24 04:39:22,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:39:22,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-24 04:39:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:22,185 INFO L225 Difference]: With dead ends: 7572 [2019-11-24 04:39:22,185 INFO L226 Difference]: Without dead ends: 7557 [2019-11-24 04:39:22,187 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:39:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7557 states. [2019-11-24 04:39:22,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7557 to 4201. [2019-11-24 04:39:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4201 states. [2019-11-24 04:39:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 7811 transitions. [2019-11-24 04:39:22,370 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 7811 transitions. Word has length 16 [2019-11-24 04:39:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:22,371 INFO L462 AbstractCegarLoop]: Abstraction has 4201 states and 7811 transitions. [2019-11-24 04:39:22,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:39:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 7811 transitions. [2019-11-24 04:39:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 04:39:22,372 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:22,373 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:39:22,373 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:22,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:22,373 INFO L82 PathProgramCache]: Analyzing trace with hash 156492735, now seen corresponding path program 1 times [2019-11-24 04:39:22,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:22,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353639626] [2019-11-24 04:39:22,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:22,476 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 04:39:22,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353639626] [2019-11-24 04:39:22,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:22,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:39:22,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472608040] [2019-11-24 04:39:22,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:39:22,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:22,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:39:22,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:39:22,479 INFO L87 Difference]: Start difference. First operand 4201 states and 7811 transitions. Second operand 3 states. [2019-11-24 04:39:23,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:23,162 INFO L93 Difference]: Finished difference Result 9421 states and 17598 transitions. [2019-11-24 04:39:23,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:39:23,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-24 04:39:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:23,178 INFO L225 Difference]: With dead ends: 9421 [2019-11-24 04:39:23,179 INFO L226 Difference]: Without dead ends: 6049 [2019-11-24 04:39:23,185 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 [2019-11-24 04:39:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6049 states. [2019-11-24 04:39:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6049 to 6034. [2019-11-24 04:39:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6034 states. [2019-11-24 04:39:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6034 states to 6034 states and 11241 transitions. [2019-11-24 04:39:23,440 INFO L78 Accepts]: Start accepts. Automaton has 6034 states and 11241 transitions. Word has length 17 [2019-11-24 04:39:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:23,441 INFO L462 AbstractCegarLoop]: Abstraction has 6034 states and 11241 transitions. [2019-11-24 04:39:23,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:39:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6034 states and 11241 transitions. [2019-11-24 04:39:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-24 04:39:23,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:23,443 INFO L410 BasicCegarLoop]: trace histogram [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 04:39:23,444 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:23,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:23,444 INFO L82 PathProgramCache]: Analyzing trace with hash -749384955, now seen corresponding path program 1 times [2019-11-24 04:39:23,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:23,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413698172] [2019-11-24 04:39:23,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:23,528 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 04:39:23,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413698172] [2019-11-24 04:39:23,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:23,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:39:23,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393137649] [2019-11-24 04:39:23,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:39:23,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:23,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:39:23,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:39:23,531 INFO L87 Difference]: Start difference. First operand 6034 states and 11241 transitions. Second operand 4 states. [2019-11-24 04:39:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:23,914 INFO L93 Difference]: Finished difference Result 12476 states and 23287 transitions. [2019-11-24 04:39:23,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:39:23,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-11-24 04:39:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:23,935 INFO L225 Difference]: With dead ends: 12476 [2019-11-24 04:39:23,935 INFO L226 Difference]: Without dead ends: 6844 [2019-11-24 04:39:23,944 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 04:39:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6844 states. [2019-11-24 04:39:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6844 to 5375. [2019-11-24 04:39:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5375 states. [2019-11-24 04:39:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5375 states to 5375 states and 10033 transitions. [2019-11-24 04:39:24,185 INFO L78 Accepts]: Start accepts. Automaton has 5375 states and 10033 transitions. Word has length 23 [2019-11-24 04:39:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:24,185 INFO L462 AbstractCegarLoop]: Abstraction has 5375 states and 10033 transitions. [2019-11-24 04:39:24,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:39:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 5375 states and 10033 transitions. [2019-11-24 04:39:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-24 04:39:24,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:24,187 INFO L410 BasicCegarLoop]: trace histogram [1, 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 04:39:24,187 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:24,188 INFO L82 PathProgramCache]: Analyzing trace with hash -252714780, now seen corresponding path program 1 times [2019-11-24 04:39:24,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:24,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122555241] [2019-11-24 04:39:24,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:24,289 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 04:39:24,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122555241] [2019-11-24 04:39:24,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:24,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:39:24,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169343526] [2019-11-24 04:39:24,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:39:24,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:24,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:39:24,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:39:24,292 INFO L87 Difference]: Start difference. First operand 5375 states and 10033 transitions. Second operand 5 states. [2019-11-24 04:39:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:25,044 INFO L93 Difference]: Finished difference Result 11364 states and 21158 transitions. [2019-11-24 04:39:25,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 04:39:25,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-11-24 04:39:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:25,063 INFO L225 Difference]: With dead ends: 11364 [2019-11-24 04:39:25,063 INFO L226 Difference]: Without dead ends: 6721 [2019-11-24 04:39:25,071 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 04:39:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2019-11-24 04:39:27,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 5425. [2019-11-24 04:39:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5425 states. [2019-11-24 04:39:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 10076 transitions. [2019-11-24 04:39:27,778 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 10076 transitions. Word has length 24 [2019-11-24 04:39:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:27,778 INFO L462 AbstractCegarLoop]: Abstraction has 5425 states and 10076 transitions. [2019-11-24 04:39:27,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:39:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 10076 transitions. [2019-11-24 04:39:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-24 04:39:27,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:27,781 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 04:39:27,781 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1907725975, now seen corresponding path program 1 times [2019-11-24 04:39:27,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:27,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853378295] [2019-11-24 04:39:27,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:27,883 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 04:39:27,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853378295] [2019-11-24 04:39:27,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:27,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:39:27,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065050101] [2019-11-24 04:39:27,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:39:27,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:27,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:39:27,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:39:27,885 INFO L87 Difference]: Start difference. First operand 5425 states and 10076 transitions. Second operand 4 states. [2019-11-24 04:39:28,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:28,161 INFO L93 Difference]: Finished difference Result 8764 states and 16224 transitions. [2019-11-24 04:39:28,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:39:28,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-11-24 04:39:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:28,181 INFO L225 Difference]: With dead ends: 8764 [2019-11-24 04:39:28,182 INFO L226 Difference]: Without dead ends: 8749 [2019-11-24 04:39:28,185 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 04:39:28,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8749 states. [2019-11-24 04:39:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8749 to 5514. [2019-11-24 04:39:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5514 states. [2019-11-24 04:39:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 10205 transitions. [2019-11-24 04:39:28,407 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 10205 transitions. Word has length 29 [2019-11-24 04:39:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:28,408 INFO L462 AbstractCegarLoop]: Abstraction has 5514 states and 10205 transitions. [2019-11-24 04:39:28,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:39:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 10205 transitions. [2019-11-24 04:39:28,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 04:39:28,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:28,410 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 04:39:28,410 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:28,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:28,410 INFO L82 PathProgramCache]: Analyzing trace with hash -311697841, now seen corresponding path program 1 times [2019-11-24 04:39:28,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:28,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343246984] [2019-11-24 04:39:28,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:28,648 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 04:39:28,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343246984] [2019-11-24 04:39:28,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:28,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:39:28,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598234408] [2019-11-24 04:39:28,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:39:28,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:28,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:39:28,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:39:28,650 INFO L87 Difference]: Start difference. First operand 5514 states and 10205 transitions. Second operand 4 states. [2019-11-24 04:39:29,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:29,975 INFO L93 Difference]: Finished difference Result 11693 states and 21591 transitions. [2019-11-24 04:39:29,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:39:29,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-24 04:39:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:29,993 INFO L225 Difference]: With dead ends: 11693 [2019-11-24 04:39:29,993 INFO L226 Difference]: Without dead ends: 6840 [2019-11-24 04:39:30,001 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 04:39:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2019-11-24 04:39:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 5514. [2019-11-24 04:39:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5514 states. [2019-11-24 04:39:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 10172 transitions. [2019-11-24 04:39:30,276 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 10172 transitions. Word has length 30 [2019-11-24 04:39:30,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:30,277 INFO L462 AbstractCegarLoop]: Abstraction has 5514 states and 10172 transitions. [2019-11-24 04:39:30,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:39:30,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 10172 transitions. [2019-11-24 04:39:30,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 04:39:30,279 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:30,279 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 04:39:30,279 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:30,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1232443922, now seen corresponding path program 1 times [2019-11-24 04:39:30,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:30,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845070811] [2019-11-24 04:39:30,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:30,453 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 04:39:30,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845070811] [2019-11-24 04:39:30,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:30,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:39:30,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390209863] [2019-11-24 04:39:30,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:39:30,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:30,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:39:30,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:39:30,456 INFO L87 Difference]: Start difference. First operand 5514 states and 10172 transitions. Second operand 5 states. [2019-11-24 04:39:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:31,419 INFO L93 Difference]: Finished difference Result 10259 states and 18972 transitions. [2019-11-24 04:39:31,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:39:31,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-24 04:39:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:31,433 INFO L225 Difference]: With dead ends: 10259 [2019-11-24 04:39:31,434 INFO L226 Difference]: Without dead ends: 7889 [2019-11-24 04:39:31,438 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:39:31,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7889 states. [2019-11-24 04:39:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7889 to 5514. [2019-11-24 04:39:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5514 states. [2019-11-24 04:39:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 10168 transitions. [2019-11-24 04:39:31,773 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 10168 transitions. Word has length 30 [2019-11-24 04:39:31,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:31,774 INFO L462 AbstractCegarLoop]: Abstraction has 5514 states and 10168 transitions. [2019-11-24 04:39:31,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:39:31,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 10168 transitions. [2019-11-24 04:39:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 04:39:31,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:31,777 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 04:39:31,777 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:31,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:31,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2047731590, now seen corresponding path program 1 times [2019-11-24 04:39:31,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:31,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308589392] [2019-11-24 04:39:31,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:31,911 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 04:39:31,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308589392] [2019-11-24 04:39:31,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:31,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:39:31,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136070737] [2019-11-24 04:39:31,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:39:31,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:31,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:39:31,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:39:31,914 INFO L87 Difference]: Start difference. First operand 5514 states and 10168 transitions. Second operand 5 states. [2019-11-24 04:39:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:39:32,570 INFO L93 Difference]: Finished difference Result 14927 states and 27664 transitions. [2019-11-24 04:39:32,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:39:32,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-24 04:39:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:39:32,588 INFO L225 Difference]: With dead ends: 14927 [2019-11-24 04:39:32,588 INFO L226 Difference]: Without dead ends: 10189 [2019-11-24 04:39:32,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:39:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10189 states. [2019-11-24 04:39:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10189 to 5514. [2019-11-24 04:39:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5514 states. [2019-11-24 04:39:32,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 10160 transitions. [2019-11-24 04:39:32,944 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 10160 transitions. Word has length 30 [2019-11-24 04:39:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:39:32,944 INFO L462 AbstractCegarLoop]: Abstraction has 5514 states and 10160 transitions. [2019-11-24 04:39:32,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:39:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 10160 transitions. [2019-11-24 04:39:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 04:39:32,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:39:32,946 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 04:39:32,946 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:39:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:39:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash 98219091, now seen corresponding path program 1 times [2019-11-24 04:39:32,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:39:32,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636120436] [2019-11-24 04:39:32,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:39:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:39:33,353 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 04:39:33,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636120436] [2019-11-24 04:39:33,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:39:33,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-24 04:39:33,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780189716] [2019-11-24 04:39:33,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-24 04:39:33,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:39:33,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-24 04:39:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-24 04:39:33,357 INFO L87 Difference]: Start difference. First operand 5514 states and 10160 transitions. Second operand 10 states.