/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_spec9_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:48:36,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:48:36,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:48:36,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:48:36,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:48:36,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:48:36,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:48:36,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:48:36,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:48:36,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:48:36,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:48:36,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:48:36,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:48:36,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:48:36,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:48:36,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:48:36,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:48:36,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:48:36,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:48:36,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:48:36,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:48:36,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:48:36,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:48:36,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:48:36,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:48:36,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:48:36,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:48:36,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:48:36,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:48:36,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:48:36,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:48:36,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:48:36,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:48:36,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:48:36,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:48:36,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:48:36,768 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 04:48:36,783 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:48:36,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:48:36,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:48:36,785 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:48:36,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:48:36,785 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:48:36,785 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:48:36,785 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:48:36,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:48:36,786 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:48:36,786 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:48:36,786 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:48:36,786 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:48:36,787 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:48:36,787 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:48:36,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:48:36,788 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:48:36,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:48:36,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:48:36,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:48:36,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:48:36,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:48:36,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:48:36,789 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:48:36,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:48:36,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:48:36,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:48:36,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:48:36,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:48:36,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:48:36,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:48:36,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:48:36,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:48:36,791 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:48:36,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:48:36,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:48:36,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:48:36,792 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:48:37,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:48:37,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:48:37,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:48:37,071 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:48:37,071 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:48:37,072 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2019-11-24 04:48:37,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b28e9080d/c4632fb1d37a47e49511deeb7dbccbd6/FLAG94ec58618 [2019-11-24 04:48:37,755 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:48:37,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2019-11-24 04:48:37,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b28e9080d/c4632fb1d37a47e49511deeb7dbccbd6/FLAG94ec58618 [2019-11-24 04:48:37,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b28e9080d/c4632fb1d37a47e49511deeb7dbccbd6 [2019-11-24 04:48:37,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:48:37,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:48:37,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:48:37,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:48:37,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:48:37,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:48:37" (1/1) ... [2019-11-24 04:48:37,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21140bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:37, skipping insertion in model container [2019-11-24 04:48:37,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:48:37" (1/1) ... [2019-11-24 04:48:37,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:48:38,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:48:38,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:48:38,801 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:48:38,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:48:39,035 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:48:39,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39 WrapperNode [2019-11-24 04:48:39,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:48:39,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:48:39,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:48:39,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:48:39,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (1/1) ... [2019-11-24 04:48:39,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (1/1) ... [2019-11-24 04:48:39,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:48:39,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:48:39,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:48:39,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:48:39,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (1/1) ... [2019-11-24 04:48:39,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (1/1) ... [2019-11-24 04:48:39,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (1/1) ... [2019-11-24 04:48:39,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (1/1) ... [2019-11-24 04:48:39,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (1/1) ... [2019-11-24 04:48:39,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (1/1) ... [2019-11-24 04:48:39,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (1/1) ... [2019-11-24 04:48:39,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:48:39,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:48:39,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:48:39,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:48:39,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (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 04:48:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:48:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:48:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:48:40,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:49:39,799 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:49:39,800 INFO L284 CfgBuilder]: Removed 1553 assume(true) statements. [2019-11-24 04:49:39,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:49:39 BoogieIcfgContainer [2019-11-24 04:49:39,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:49:39,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:49:39,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:49:39,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:49:39,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:48:37" (1/3) ... [2019-11-24 04:49:39,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb5351b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:49:39, skipping insertion in model container [2019-11-24 04:49:39,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:48:39" (2/3) ... [2019-11-24 04:49:39,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb5351b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:49:39, skipping insertion in model container [2019-11-24 04:49:39,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:49:39" (3/3) ... [2019-11-24 04:49:39,813 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2019-11-24 04:49:39,825 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:49:39,837 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 04:49:39,851 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 04:49:39,894 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:49:39,894 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:49:39,894 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:49:39,895 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:49:39,895 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:49:39,895 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:49:39,895 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:49:39,896 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:49:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states. [2019-11-24 04:49:39,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 04:49:39,960 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:39,961 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:49:39,962 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 04:49:39,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:39,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1005668268, now seen corresponding path program 1 times [2019-11-24 04:49:39,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:39,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92419995] [2019-11-24 04:49:39,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:40,369 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 04:49:40,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92419995] [2019-11-24 04:49:40,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:40,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:49:40,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758361230] [2019-11-24 04:49:40,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:49:40,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:40,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:49:40,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:49:40,396 INFO L87 Difference]: Start difference. First operand 2413 states. Second operand 2 states. [2019-11-24 04:49:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:40,525 INFO L93 Difference]: Finished difference Result 2430 states and 4699 transitions. [2019-11-24 04:49:40,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:49:40,527 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-24 04:49:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:40,565 INFO L225 Difference]: With dead ends: 2430 [2019-11-24 04:49:40,565 INFO L226 Difference]: Without dead ends: 2411 [2019-11-24 04:49:40,572 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 04:49:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2019-11-24 04:49:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2411. [2019-11-24 04:49:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2019-11-24 04:49:40,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 4669 transitions. [2019-11-24 04:49:40,729 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 4669 transitions. Word has length 10 [2019-11-24 04:49:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:40,730 INFO L462 AbstractCegarLoop]: Abstraction has 2411 states and 4669 transitions. [2019-11-24 04:49:40,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:49:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 4669 transitions. [2019-11-24 04:49:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:49:40,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:40,733 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:49:40,734 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 04:49:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:40,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1071555589, now seen corresponding path program 1 times [2019-11-24 04:49:40,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:40,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783133394] [2019-11-24 04:49:40,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:40,897 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 04:49:40,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783133394] [2019-11-24 04:49:40,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:40,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:40,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423273463] [2019-11-24 04:49:40,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:49:40,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:40,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:49:40,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:49:40,900 INFO L87 Difference]: Start difference. First operand 2411 states and 4669 transitions. Second operand 3 states. [2019-11-24 04:49:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:41,381 INFO L93 Difference]: Finished difference Result 4469 states and 8649 transitions. [2019-11-24 04:49:41,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:49:41,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-24 04:49:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:41,400 INFO L225 Difference]: With dead ends: 4469 [2019-11-24 04:49:41,400 INFO L226 Difference]: Without dead ends: 3254 [2019-11-24 04:49:41,407 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 04:49:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2019-11-24 04:49:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3180. [2019-11-24 04:49:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3180 states. [2019-11-24 04:49:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 6157 transitions. [2019-11-24 04:49:41,493 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 6157 transitions. Word has length 11 [2019-11-24 04:49:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:41,493 INFO L462 AbstractCegarLoop]: Abstraction has 3180 states and 6157 transitions. [2019-11-24 04:49:41,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:49:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 6157 transitions. [2019-11-24 04:49:41,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:49:41,496 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:41,496 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:49:41,496 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 04:49:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1141475599, now seen corresponding path program 1 times [2019-11-24 04:49:41,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:41,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985910907] [2019-11-24 04:49:41,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:41,588 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 04:49:41,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985910907] [2019-11-24 04:49:41,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:41,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:41,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405747466] [2019-11-24 04:49:41,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:49:41,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:41,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:49:41,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:49:41,593 INFO L87 Difference]: Start difference. First operand 3180 states and 6157 transitions. Second operand 3 states. [2019-11-24 04:49:42,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:42,156 INFO L93 Difference]: Finished difference Result 6902 states and 13361 transitions. [2019-11-24 04:49:42,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:49:42,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-24 04:49:42,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:42,186 INFO L225 Difference]: With dead ends: 6902 [2019-11-24 04:49:42,186 INFO L226 Difference]: Without dead ends: 4931 [2019-11-24 04:49:42,191 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 04:49:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2019-11-24 04:49:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4707. [2019-11-24 04:49:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4707 states. [2019-11-24 04:49:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 9113 transitions. [2019-11-24 04:49:42,337 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 9113 transitions. Word has length 12 [2019-11-24 04:49:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:42,337 INFO L462 AbstractCegarLoop]: Abstraction has 4707 states and 9113 transitions. [2019-11-24 04:49:42,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:49:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 9113 transitions. [2019-11-24 04:49:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:49:42,340 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:42,340 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:49:42,340 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 04:49:42,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:42,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1025965682, now seen corresponding path program 1 times [2019-11-24 04:49:42,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:42,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769679554] [2019-11-24 04:49:42,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:42,434 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 04:49:42,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769679554] [2019-11-24 04:49:42,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:42,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:42,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11390985] [2019-11-24 04:49:42,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:49:42,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:42,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:49:42,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:49:42,436 INFO L87 Difference]: Start difference. First operand 4707 states and 9113 transitions. Second operand 3 states. [2019-11-24 04:49:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:42,965 INFO L93 Difference]: Finished difference Result 8192 states and 15859 transitions. [2019-11-24 04:49:42,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:49:42,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 04:49:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:42,993 INFO L225 Difference]: With dead ends: 8192 [2019-11-24 04:49:42,993 INFO L226 Difference]: Without dead ends: 4705 [2019-11-24 04:49:42,999 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 04:49:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4705 states. [2019-11-24 04:49:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4705 to 4705. [2019-11-24 04:49:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4705 states. [2019-11-24 04:49:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4705 states to 4705 states and 9103 transitions. [2019-11-24 04:49:43,140 INFO L78 Accepts]: Start accepts. Automaton has 4705 states and 9103 transitions. Word has length 13 [2019-11-24 04:49:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:43,141 INFO L462 AbstractCegarLoop]: Abstraction has 4705 states and 9103 transitions. [2019-11-24 04:49:43,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:49:43,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4705 states and 9103 transitions. [2019-11-24 04:49:43,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 04:49:43,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:43,144 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:49:43,144 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 04:49:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:43,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1740125542, now seen corresponding path program 1 times [2019-11-24 04:49:43,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:43,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458802740] [2019-11-24 04:49:43,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:43,218 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 04:49:43,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458802740] [2019-11-24 04:49:43,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:43,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:43,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673290838] [2019-11-24 04:49:43,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:49:43,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:43,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:49:43,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:49:43,220 INFO L87 Difference]: Start difference. First operand 4705 states and 9103 transitions. Second operand 3 states. [2019-11-24 04:49:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:44,280 INFO L93 Difference]: Finished difference Result 11527 states and 22302 transitions. [2019-11-24 04:49:44,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:49:44,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-24 04:49:44,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:44,341 INFO L225 Difference]: With dead ends: 11527 [2019-11-24 04:49:44,341 INFO L226 Difference]: Without dead ends: 8045 [2019-11-24 04:49:44,349 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 04:49:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2019-11-24 04:49:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 7745. [2019-11-24 04:49:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7745 states. [2019-11-24 04:49:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 14980 transitions. [2019-11-24 04:49:44,598 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 14980 transitions. Word has length 14 [2019-11-24 04:49:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:44,599 INFO L462 AbstractCegarLoop]: Abstraction has 7745 states and 14980 transitions. [2019-11-24 04:49:44,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:49:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 14980 transitions. [2019-11-24 04:49:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:49:44,601 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:44,601 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:49:44,601 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 04:49:44,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:44,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1890722583, now seen corresponding path program 1 times [2019-11-24 04:49:44,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:44,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455966524] [2019-11-24 04:49:44,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:44,683 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 04:49:44,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455966524] [2019-11-24 04:49:44,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:44,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:44,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954497366] [2019-11-24 04:49:44,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:49:44,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:44,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:49:44,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:49:44,687 INFO L87 Difference]: Start difference. First operand 7745 states and 14980 transitions. Second operand 3 states. [2019-11-24 04:49:45,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:45,170 INFO L93 Difference]: Finished difference Result 7745 states and 14980 transitions. [2019-11-24 04:49:45,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:49:45,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-24 04:49:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:45,188 INFO L225 Difference]: With dead ends: 7745 [2019-11-24 04:49:45,188 INFO L226 Difference]: Without dead ends: 7738 [2019-11-24 04:49:45,192 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 04:49:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7738 states. [2019-11-24 04:49:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7738 to 7738. [2019-11-24 04:49:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7738 states. [2019-11-24 04:49:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 14968 transitions. [2019-11-24 04:49:45,418 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 14968 transitions. Word has length 15 [2019-11-24 04:49:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:45,418 INFO L462 AbstractCegarLoop]: Abstraction has 7738 states and 14968 transitions. [2019-11-24 04:49:45,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:49:45,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 14968 transitions. [2019-11-24 04:49:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 04:49:45,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:45,426 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 04:49:45,427 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 04:49:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:45,427 INFO L82 PathProgramCache]: Analyzing trace with hash 896082115, now seen corresponding path program 1 times [2019-11-24 04:49:45,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:45,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040113300] [2019-11-24 04:49:45,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:45,596 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 04:49:45,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040113300] [2019-11-24 04:49:45,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:45,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:45,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754922820] [2019-11-24 04:49:45,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:49:45,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:45,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:49:45,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:49:45,599 INFO L87 Difference]: Start difference. First operand 7738 states and 14968 transitions. Second operand 4 states. [2019-11-24 04:49:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:46,027 INFO L93 Difference]: Finished difference Result 17886 states and 34450 transitions. [2019-11-24 04:49:46,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:49:46,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-24 04:49:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:46,052 INFO L225 Difference]: With dead ends: 17886 [2019-11-24 04:49:46,052 INFO L226 Difference]: Without dead ends: 10742 [2019-11-24 04:49:46,064 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 04:49:46,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10742 states. [2019-11-24 04:49:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10742 to 7313. [2019-11-24 04:49:46,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7313 states. [2019-11-24 04:49:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7313 states to 7313 states and 14079 transitions. [2019-11-24 04:49:46,365 INFO L78 Accepts]: Start accepts. Automaton has 7313 states and 14079 transitions. Word has length 30 [2019-11-24 04:49:46,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:46,366 INFO L462 AbstractCegarLoop]: Abstraction has 7313 states and 14079 transitions. [2019-11-24 04:49:46,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:49:46,366 INFO L276 IsEmpty]: Start isEmpty. Operand 7313 states and 14079 transitions. [2019-11-24 04:49:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-24 04:49:46,370 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:46,370 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, 1] [2019-11-24 04:49:46,371 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 04:49:46,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:46,371 INFO L82 PathProgramCache]: Analyzing trace with hash -781469663, now seen corresponding path program 1 times [2019-11-24 04:49:46,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:46,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944561005] [2019-11-24 04:49:46,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:46,589 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 04:49:46,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944561005] [2019-11-24 04:49:46,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:46,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:46,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342363237] [2019-11-24 04:49:46,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:49:46,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:46,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:49:46,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:49:46,592 INFO L87 Difference]: Start difference. First operand 7313 states and 14079 transitions. Second operand 3 states. [2019-11-24 04:49:51,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:51,105 INFO L93 Difference]: Finished difference Result 20384 states and 39220 transitions. [2019-11-24 04:49:51,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:49:51,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-11-24 04:49:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:51,140 INFO L225 Difference]: With dead ends: 20384 [2019-11-24 04:49:51,140 INFO L226 Difference]: Without dead ends: 13519 [2019-11-24 04:49:51,153 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 04:49:51,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13519 states. [2019-11-24 04:49:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13519 to 7253. [2019-11-24 04:49:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7253 states. [2019-11-24 04:49:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7253 states to 7253 states and 13929 transitions. [2019-11-24 04:49:51,468 INFO L78 Accepts]: Start accepts. Automaton has 7253 states and 13929 transitions. Word has length 31 [2019-11-24 04:49:51,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:51,469 INFO L462 AbstractCegarLoop]: Abstraction has 7253 states and 13929 transitions. [2019-11-24 04:49:51,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:49:51,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7253 states and 13929 transitions. [2019-11-24 04:49:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-24 04:49:51,475 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:51,476 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, 1, 1] [2019-11-24 04:49:51,476 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 04:49:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:51,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1599160150, now seen corresponding path program 1 times [2019-11-24 04:49:51,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:51,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416178381] [2019-11-24 04:49:51,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:51,675 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 04:49:51,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416178381] [2019-11-24 04:49:51,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:51,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:51,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918460509] [2019-11-24 04:49:51,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:49:51,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:51,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:49:51,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:49:51,678 INFO L87 Difference]: Start difference. First operand 7253 states and 13929 transitions. Second operand 3 states. [2019-11-24 04:49:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:53,257 INFO L93 Difference]: Finished difference Result 20254 states and 38915 transitions. [2019-11-24 04:49:53,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:49:53,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-11-24 04:49:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:53,293 INFO L225 Difference]: With dead ends: 20254 [2019-11-24 04:49:53,293 INFO L226 Difference]: Without dead ends: 13471 [2019-11-24 04:49:53,306 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 04:49:53,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13471 states. [2019-11-24 04:49:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13471 to 7208. [2019-11-24 04:49:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2019-11-24 04:49:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 13794 transitions. [2019-11-24 04:49:53,617 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 13794 transitions. Word has length 32 [2019-11-24 04:49:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:53,619 INFO L462 AbstractCegarLoop]: Abstraction has 7208 states and 13794 transitions. [2019-11-24 04:49:53,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:49:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 13794 transitions. [2019-11-24 04:49:53,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-24 04:49:53,628 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:53,628 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, 1, 1, 1, 1] [2019-11-24 04:49:53,628 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 04:49:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:53,629 INFO L82 PathProgramCache]: Analyzing trace with hash 206083707, now seen corresponding path program 1 times [2019-11-24 04:49:53,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:53,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927559732] [2019-11-24 04:49:53,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:53,899 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 04:49:53,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927559732] [2019-11-24 04:49:53,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:53,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:53,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071007124] [2019-11-24 04:49:53,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:49:53,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:53,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:49:53,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:49:53,903 INFO L87 Difference]: Start difference. First operand 7208 states and 13794 transitions. Second operand 3 states. [2019-11-24 04:49:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:55,659 INFO L93 Difference]: Finished difference Result 20149 states and 38635 transitions. [2019-11-24 04:49:55,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:49:55,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-11-24 04:49:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:55,692 INFO L225 Difference]: With dead ends: 20149 [2019-11-24 04:49:55,693 INFO L226 Difference]: Without dead ends: 13438 [2019-11-24 04:49:55,706 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 04:49:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states.