/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_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:39:42,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:39:42,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:39:42,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:39:42,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:39:42,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:39:42,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:39:42,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:39:42,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:39:42,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:39:42,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:39:42,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:39:42,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:39:42,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:39:42,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:39:42,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:39:42,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:39:42,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:39:42,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:39:42,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:39:42,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:39:42,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:39:42,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:39:42,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:39:42,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:39:42,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:39:42,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:39:42,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:39:42,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:39:42,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:39:42,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:39:42,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:39:42,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:39:42,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:39:42,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:39:42,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:39:42,312 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 04:39:42,327 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:39:42,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:39:42,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:39:42,328 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:39:42,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:39:42,329 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:39:42,329 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:39:42,329 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:39:42,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:39:42,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:39:42,330 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:39:42,330 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:39:42,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:39:42,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:39:42,331 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:39:42,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:39:42,332 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:39:42,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:39:42,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:39:42,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:39:42,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:39:42,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:39:42,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:39:42,333 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:39:42,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:39:42,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:39:42,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:39:42,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:39:42,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:39:42,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:39:42,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:39:42,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:39:42,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:39:42,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:39:42,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:39:42,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:39:42,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:39:42,336 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:39:42,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:39:42,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:39:42,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:39:42,699 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:39:42,699 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:39:42,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-11-24 04:39:42,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b345564b9/d02e6fe85f4e49cf89d5028d7ea7e15f/FLAG91b047de1 [2019-11-24 04:39:43,408 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:39:43,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-11-24 04:39:43,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b345564b9/d02e6fe85f4e49cf89d5028d7ea7e15f/FLAG91b047de1 [2019-11-24 04:39:43,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b345564b9/d02e6fe85f4e49cf89d5028d7ea7e15f [2019-11-24 04:39:43,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:39:43,629 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:39:43,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:39:43,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:39:43,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:39:43,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:39:43" (1/1) ... [2019-11-24 04:39:43,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcfe847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:43, skipping insertion in model container [2019-11-24 04:39:43,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:39:43" (1/1) ... [2019-11-24 04:39:43,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:39:43,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:39:44,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:39:44,452 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:39:44,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:39:44,649 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:39:44,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44 WrapperNode [2019-11-24 04:39:44,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:39:44,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:39:44,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:39:44,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:39:44,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... [2019-11-24 04:39:44,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... [2019-11-24 04:39:45,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:39:45,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:39:45,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:39:45,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:39:45,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... [2019-11-24 04:39:45,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... [2019-11-24 04:39:45,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... [2019-11-24 04:39:45,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... [2019-11-24 04:39:45,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... [2019-11-24 04:39:45,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... [2019-11-24 04:39:45,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... [2019-11-24 04:39:45,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:39:45,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:39:45,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:39:45,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:39:45,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:39:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:39:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:39:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:39:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:40:52,357 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:40:52,357 INFO L284 CfgBuilder]: Removed 1673 assume(true) statements. [2019-11-24 04:40:52,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:40:52 BoogieIcfgContainer [2019-11-24 04:40:52,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:40:52,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:40:52,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:40:52,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:40:52,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:39:43" (1/3) ... [2019-11-24 04:40:52,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:40:52, skipping insertion in model container [2019-11-24 04:40:52,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:39:44" (2/3) ... [2019-11-24 04:40:52,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:40:52, skipping insertion in model container [2019-11-24 04:40:52,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:40:52" (3/3) ... [2019-11-24 04:40:52,370 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2019-11-24 04:40:52,382 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:40:52,392 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 04:40:52,401 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 04:40:52,449 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:40:52,449 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:40:52,450 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:40:52,450 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:40:52,450 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:40:52,450 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:40:52,451 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:40:52,451 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:40:52,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states. [2019-11-24 04:40:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:40:52,509 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:40:52,510 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:40:52,511 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 04:40:52,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:40:52,516 INFO L82 PathProgramCache]: Analyzing trace with hash -167649579, now seen corresponding path program 1 times [2019-11-24 04:40:52,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:40:52,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967170025] [2019-11-24 04:40:52,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:40:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:40:52,951 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 04:40:52,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967170025] [2019-11-24 04:40:52,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:40:52,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:40:52,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555572222] [2019-11-24 04:40:52,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:40:52,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:40:52,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:40:52,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:40:52,970 INFO L87 Difference]: Start difference. First operand 2433 states. Second operand 2 states. [2019-11-24 04:40:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:40:53,122 INFO L93 Difference]: Finished difference Result 2450 states and 4731 transitions. [2019-11-24 04:40:53,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:40:53,124 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-24 04:40:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:40:53,160 INFO L225 Difference]: With dead ends: 2450 [2019-11-24 04:40:53,160 INFO L226 Difference]: Without dead ends: 2431 [2019-11-24 04:40:53,166 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 04:40:53,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2019-11-24 04:40:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2431. [2019-11-24 04:40:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2019-11-24 04:40:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4701 transitions. [2019-11-24 04:40:53,326 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4701 transitions. Word has length 12 [2019-11-24 04:40:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:40:53,327 INFO L462 AbstractCegarLoop]: Abstraction has 2431 states and 4701 transitions. [2019-11-24 04:40:53,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:40:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4701 transitions. [2019-11-24 04:40:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:40:53,331 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:40:53,331 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:40:53,332 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 04:40:53,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:40:53,332 INFO L82 PathProgramCache]: Analyzing trace with hash -929274313, now seen corresponding path program 1 times [2019-11-24 04:40:53,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:40:53,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472377797] [2019-11-24 04:40:53,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:40:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:40:53,545 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 04:40:53,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472377797] [2019-11-24 04:40:53,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:40:53,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:40:53,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285932157] [2019-11-24 04:40:53,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:40:53,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:40:53,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:40:53,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:40:53,551 INFO L87 Difference]: Start difference. First operand 2431 states and 4701 transitions. Second operand 3 states. [2019-11-24 04:40:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:40:53,760 INFO L93 Difference]: Finished difference Result 3663 states and 7078 transitions. [2019-11-24 04:40:53,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:40:53,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 04:40:53,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:40:53,776 INFO L225 Difference]: With dead ends: 3663 [2019-11-24 04:40:53,777 INFO L226 Difference]: Without dead ends: 2427 [2019-11-24 04:40:53,785 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 04:40:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2019-11-24 04:40:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2427. [2019-11-24 04:40:53,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2019-11-24 04:40:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4693 transitions. [2019-11-24 04:40:53,878 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4693 transitions. Word has length 13 [2019-11-24 04:40:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:40:53,878 INFO L462 AbstractCegarLoop]: Abstraction has 2427 states and 4693 transitions. [2019-11-24 04:40:53,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:40:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4693 transitions. [2019-11-24 04:40:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:40:53,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:40:53,882 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:40:53,883 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 04:40:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:40:53,883 INFO L82 PathProgramCache]: Analyzing trace with hash 58992326, now seen corresponding path program 1 times [2019-11-24 04:40:53,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:40:53,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086627078] [2019-11-24 04:40:53,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:40:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:40:54,019 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 04:40:54,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086627078] [2019-11-24 04:40:54,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:40:54,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:40:54,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119654401] [2019-11-24 04:40:54,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:40:54,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:40:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:40:54,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:40:54,024 INFO L87 Difference]: Start difference. First operand 2427 states and 4693 transitions. Second operand 4 states.