/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_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:44:52,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:44:52,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:44:52,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:44:52,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:44:52,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:44:52,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:44:52,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:44:52,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:44:52,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:44:52,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:44:52,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:44:52,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:44:52,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:44:52,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:44:52,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:44:52,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:44:52,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:44:52,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:44:52,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:44:52,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:44:52,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:44:52,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:44:52,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:44:52,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:44:52,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:44:52,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:44:52,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:44:52,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:44:52,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:44:52,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:44:52,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:44:52,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:44:52,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:44:52,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:44:52,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:44:52,727 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 04:44:52,741 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:44:52,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:44:52,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:44:52,743 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:44:52,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:44:52,743 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:44:52,743 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:44:52,743 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:44:52,744 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:44:52,744 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:44:52,744 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:44:52,744 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:44:52,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:44:52,745 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:44:52,745 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:44:52,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:44:52,746 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:44:52,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:44:52,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:44:52,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:44:52,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:44:52,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:44:52,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:44:52,747 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:44:52,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:44:52,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:44:52,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:44:52,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:44:52,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:44:52,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:44:52,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:44:52,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:44:52,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:44:52,749 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:44:52,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:44:52,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:44:52,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:44:52,750 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:44:53,066 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:44:53,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:44:53,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:44:53,093 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:44:53,094 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:44:53,094 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-11-24 04:44:53,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b9553d1/8d43c4f008e140c8aa4897c74a45fe23/FLAG3893b1a6a [2019-11-24 04:44:53,781 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:44:53,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-11-24 04:44:53,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b9553d1/8d43c4f008e140c8aa4897c74a45fe23/FLAG3893b1a6a [2019-11-24 04:44:53,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b9553d1/8d43c4f008e140c8aa4897c74a45fe23 [2019-11-24 04:44:54,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:44:54,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:44:54,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:44:54,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:44:54,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:44:54,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:44:53" (1/1) ... [2019-11-24 04:44:54,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c0e2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:54, skipping insertion in model container [2019-11-24 04:44:54,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:44:53" (1/1) ... [2019-11-24 04:44:54,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:44:54,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:44:54,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:44:54,886 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:44:55,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:44:55,088 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:44:55,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55 WrapperNode [2019-11-24 04:44:55,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:44:55,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:44:55,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:44:55,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:44:55,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (1/1) ... [2019-11-24 04:44:55,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (1/1) ... [2019-11-24 04:44:55,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:44:55,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:44:55,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:44:55,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:44:55,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (1/1) ... [2019-11-24 04:44:55,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (1/1) ... [2019-11-24 04:44:55,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (1/1) ... [2019-11-24 04:44:55,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (1/1) ... [2019-11-24 04:44:55,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (1/1) ... [2019-11-24 04:44:55,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (1/1) ... [2019-11-24 04:44:56,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (1/1) ... [2019-11-24 04:44:56,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:44:56,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:44:56,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:44:56,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:44:56,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (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 04:44:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:44:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:44:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:44:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:46:08,085 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:46:08,086 INFO L284 CfgBuilder]: Removed 1897 assume(true) statements. [2019-11-24 04:46:08,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:46:08 BoogieIcfgContainer [2019-11-24 04:46:08,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:46:08,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:46:08,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:46:08,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:46:08,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:44:53" (1/3) ... [2019-11-24 04:46:08,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47efe32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:46:08, skipping insertion in model container [2019-11-24 04:46:08,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:44:55" (2/3) ... [2019-11-24 04:46:08,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47efe32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:46:08, skipping insertion in model container [2019-11-24 04:46:08,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:46:08" (3/3) ... [2019-11-24 04:46:08,099 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2019-11-24 04:46:08,107 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:46:08,118 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-24 04:46:08,127 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-24 04:46:08,184 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:46:08,184 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:46:08,184 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:46:08,184 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:46:08,184 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:46:08,185 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:46:08,185 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:46:08,185 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:46:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states. [2019-11-24 04:46:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 04:46:08,251 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:46:08,252 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 04:46:08,253 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:46:08,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:46:08,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1073859415, now seen corresponding path program 1 times [2019-11-24 04:46:08,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:46:08,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396738548] [2019-11-24 04:46:08,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:46:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:46:08,751 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 04:46:08,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396738548] [2019-11-24 04:46:08,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:46:08,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:46:08,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468945100] [2019-11-24 04:46:08,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:46:08,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:46:08,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:46:08,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:46:08,779 INFO L87 Difference]: Start difference. First operand 3108 states. Second operand 3 states. [2019-11-24 04:46:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:46:09,069 INFO L93 Difference]: Finished difference Result 6195 states and 11975 transitions. [2019-11-24 04:46:09,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:46:09,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-24 04:46:09,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:46:09,114 INFO L225 Difference]: With dead ends: 6195 [2019-11-24 04:46:09,114 INFO L226 Difference]: Without dead ends: 3097 [2019-11-24 04:46:09,129 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 04:46:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2019-11-24 04:46:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3097. [2019-11-24 04:46:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3097 states. [2019-11-24 04:46:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 5973 transitions. [2019-11-24 04:46:09,300 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 5973 transitions. Word has length 17 [2019-11-24 04:46:09,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:46:09,301 INFO L462 AbstractCegarLoop]: Abstraction has 3097 states and 5973 transitions. [2019-11-24 04:46:09,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:46:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 5973 transitions. [2019-11-24 04:46:09,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 04:46:09,309 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:46:09,309 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 04:46:09,310 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:46:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:46:09,310 INFO L82 PathProgramCache]: Analyzing trace with hash 442007919, now seen corresponding path program 1 times [2019-11-24 04:46:09,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:46:09,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133616591] [2019-11-24 04:46:09,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:46:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:46:09,499 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 04:46:09,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133616591] [2019-11-24 04:46:09,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:46:09,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:46:09,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78542110] [2019-11-24 04:46:09,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:46:09,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:46:09,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:46:09,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:46:09,503 INFO L87 Difference]: Start difference. First operand 3097 states and 5973 transitions. Second operand 4 states.