/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/email_spec0_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:49:06,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:49:06,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:49:06,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:49:06,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:49:06,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:49:06,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:49:06,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:49:06,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:49:06,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:49:06,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:49:06,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:49:06,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:49:06,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:49:06,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:49:06,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:49:06,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:49:06,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:49:06,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:49:06,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:49:06,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:49:06,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:49:06,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:49:06,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:49:06,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:49:06,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:49:06,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:49:06,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:49:06,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:49:06,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:49:06,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:49:06,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:49:06,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:49:06,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:49:06,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:49:06,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:49:06,497 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 04:49:06,511 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:49:06,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:49:06,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:49:06,513 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:49:06,513 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:49:06,513 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:49:06,513 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:49:06,513 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:49:06,514 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:49:06,514 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:49:06,514 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:49:06,514 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:49:06,514 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:49:06,515 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:49:06,515 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:49:06,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:49:06,516 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:49:06,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:49:06,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:49:06,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:49:06,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:49:06,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:49:06,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:49:06,517 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:49:06,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:49:06,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:49:06,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:49:06,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:49:06,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:49:06,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:49:06,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:49:06,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:49:06,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:49:06,519 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:49:06,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:49:06,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:49:06,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:49:06,520 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:49:06,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:49:06,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:49:06,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:49:06,846 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:49:06,847 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:49:06,847 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product22.cil.c [2019-11-24 04:49:06,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886faf7a3/a2731003ce6b4272b079cb63273a7dd3/FLAGd51ec4f70 [2019-11-24 04:49:07,532 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:49:07,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product22.cil.c [2019-11-24 04:49:07,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886faf7a3/a2731003ce6b4272b079cb63273a7dd3/FLAGd51ec4f70 [2019-11-24 04:49:07,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886faf7a3/a2731003ce6b4272b079cb63273a7dd3 [2019-11-24 04:49:07,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:49:07,755 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:49:07,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:49:07,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:49:07,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:49:07,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:49:07" (1/1) ... [2019-11-24 04:49:07,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4837be06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:07, skipping insertion in model container [2019-11-24 04:49:07,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:49:07" (1/1) ... [2019-11-24 04:49:07,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:49:07,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:49:08,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:49:08,554 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:49:08,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:49:08,759 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:49:08,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08 WrapperNode [2019-11-24 04:49:08,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:49:08,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:49:08,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:49:08,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:49:08,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (1/1) ... [2019-11-24 04:49:08,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (1/1) ... [2019-11-24 04:49:08,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:49:08,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:49:08,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:49:08,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:49:08,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (1/1) ... [2019-11-24 04:49:08,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (1/1) ... [2019-11-24 04:49:08,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (1/1) ... [2019-11-24 04:49:08,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (1/1) ... [2019-11-24 04:49:08,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (1/1) ... [2019-11-24 04:49:09,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (1/1) ... [2019-11-24 04:49:09,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (1/1) ... [2019-11-24 04:49:09,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:49:09,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:49:09,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:49:09,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:49:09,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (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 04:49:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:49:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:49:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:49:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:49:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:49:16,074 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:49:16,075 INFO L284 CfgBuilder]: Removed 323 assume(true) statements. [2019-11-24 04:49:16,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:49:16 BoogieIcfgContainer [2019-11-24 04:49:16,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:49:16,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:49:16,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:49:16,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:49:16,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:49:07" (1/3) ... [2019-11-24 04:49:16,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c404963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:49:16, skipping insertion in model container [2019-11-24 04:49:16,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:49:08" (2/3) ... [2019-11-24 04:49:16,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c404963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:49:16, skipping insertion in model container [2019-11-24 04:49:16,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:49:16" (3/3) ... [2019-11-24 04:49:16,085 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product22.cil.c [2019-11-24 04:49:16,095 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:49:16,103 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 04:49:16,112 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 04:49:16,133 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:49:16,133 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:49:16,134 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:49:16,134 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:49:16,134 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:49:16,134 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:49:16,134 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:49:16,134 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:49:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-11-24 04:49:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:49:16,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:16,154 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:49:16,155 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:49:16,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:16,160 INFO L82 PathProgramCache]: Analyzing trace with hash -358966976, now seen corresponding path program 1 times [2019-11-24 04:49:16,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:16,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442138366] [2019-11-24 04:49:16,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:16,516 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 04:49:16,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442138366] [2019-11-24 04:49:16,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:16,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:49:16,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616881318] [2019-11-24 04:49:16,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:49:16,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:16,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:49:16,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:49:16,542 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2019-11-24 04:49:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:16,566 INFO L93 Difference]: Finished difference Result 56 states and 89 transitions. [2019-11-24 04:49:16,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:49:16,568 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 04:49:16,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:16,581 INFO L225 Difference]: With dead ends: 56 [2019-11-24 04:49:16,581 INFO L226 Difference]: Without dead ends: 38 [2019-11-24 04:49:16,585 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 04:49:16,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-24 04:49:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-24 04:49:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-24 04:49:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2019-11-24 04:49:16,639 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 7 [2019-11-24 04:49:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:16,640 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2019-11-24 04:49:16,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:49:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2019-11-24 04:49:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:49:16,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:16,643 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:49:16,643 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:49:16,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1001760748, now seen corresponding path program 1 times [2019-11-24 04:49:16,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:16,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020995928] [2019-11-24 04:49:16,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:16,814 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 04:49:16,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020995928] [2019-11-24 04:49:16,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:49:16,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:49:16,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162921093] [2019-11-24 04:49:16,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:49:16,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:49:16,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:49:16,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:49:16,818 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 3 states. [2019-11-24 04:49:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:49:16,833 INFO L93 Difference]: Finished difference Result 52 states and 76 transitions. [2019-11-24 04:49:16,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:49:16,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 04:49:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:49:16,835 INFO L225 Difference]: With dead ends: 52 [2019-11-24 04:49:16,835 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 04:49:16,837 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 04:49:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 04:49:16,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 04:49:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 04:49:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2019-11-24 04:49:16,844 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 63 transitions. Word has length 8 [2019-11-24 04:49:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:49:16,845 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 63 transitions. [2019-11-24 04:49:16,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:49:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 63 transitions. [2019-11-24 04:49:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:49:16,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:49:16,846 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:49:16,847 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:49:16,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:49:16,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1359779310, now seen corresponding path program 1 times [2019-11-24 04:49:16,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:49:16,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034074578] [2019-11-24 04:49:16,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:49:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:49:17,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034074578] [2019-11-24 04:49:17,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217263030] [2019-11-24 04:49:17,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:49:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:49:17,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:49:17,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:49:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:49:17,458 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:49:17,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:49:17,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [804700269] [2019-11-24 04:49:17,503 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 04:49:17,503 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:49:17,510 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:49:17,517 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:49:17,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:49:53,911 WARN L192 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 664 [2019-11-24 04:49:57,257 WARN L192 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 289 DAG size of output: 235 [2019-11-24 04:49:57,630 WARN L192 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 702 [2019-11-24 04:49:57,814 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8