/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_spec11_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:51:22,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:51:22,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:51:22,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:51:22,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:51:22,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:51:22,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:51:22,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:51:22,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:51:22,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:51:22,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:51:22,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:51:22,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:51:22,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:51:22,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:51:22,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:51:22,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:51:22,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:51:22,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:51:22,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:51:22,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:51:22,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:51:22,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:51:22,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:51:22,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:51:22,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:51:22,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:51:22,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:51:22,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:51:22,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:51:22,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:51:22,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:51:22,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:51:22,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:51:22,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:51:22,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:51:22,826 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 04:51:22,861 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:51:22,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:51:22,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:51:22,862 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:51:22,862 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:51:22,862 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:51:22,862 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:51:22,863 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:51:22,863 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:51:22,863 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:51:22,863 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:51:22,863 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:51:22,864 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:51:22,864 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:51:22,864 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:51:22,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:51:22,867 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:51:22,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:51:22,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:51:22,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:51:22,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:51:22,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:51:22,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:51:22,868 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:51:22,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:51:22,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:51:22,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:51:22,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:51:22,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:51:22,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:51:22,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:51:22,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:51:22,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:51:22,871 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:51:22,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:51:22,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:51:22,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:51:22,872 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:51:23,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:51:23,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:51:23,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:51:23,181 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:51:23,181 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:51:23,182 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product20.cil.c [2019-11-24 04:51:23,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d73d0f04/2623841525304321ae3b512f9b3f03a8/FLAGe65a0390c [2019-11-24 04:51:23,821 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:51:23,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product20.cil.c [2019-11-24 04:51:23,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d73d0f04/2623841525304321ae3b512f9b3f03a8/FLAGe65a0390c [2019-11-24 04:51:24,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d73d0f04/2623841525304321ae3b512f9b3f03a8 [2019-11-24 04:51:24,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:51:24,113 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:51:24,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:51:24,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:51:24,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:51:24,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:51:24" (1/1) ... [2019-11-24 04:51:24,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e46584f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:24, skipping insertion in model container [2019-11-24 04:51:24,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:51:24" (1/1) ... [2019-11-24 04:51:24,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:51:24,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:51:24,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:51:24,903 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:51:25,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:51:25,199 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:51:25,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25 WrapperNode [2019-11-24 04:51:25,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:51:25,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:51:25,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:51:25,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:51:25,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (1/1) ... [2019-11-24 04:51:25,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (1/1) ... [2019-11-24 04:51:25,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:51:25,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:51:25,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:51:25,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:51:25,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (1/1) ... [2019-11-24 04:51:25,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (1/1) ... [2019-11-24 04:51:25,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (1/1) ... [2019-11-24 04:51:25,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (1/1) ... [2019-11-24 04:51:25,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (1/1) ... [2019-11-24 04:51:25,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (1/1) ... [2019-11-24 04:51:25,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (1/1) ... [2019-11-24 04:51:25,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:51:25,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:51:25,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:51:25,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:51:25,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (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 04:51:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:51:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:51:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:51:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:51:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:51:37,106 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:51:37,106 INFO L284 CfgBuilder]: Removed 541 assume(true) statements. [2019-11-24 04:51:37,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:51:37 BoogieIcfgContainer [2019-11-24 04:51:37,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:51:37,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:51:37,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:51:37,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:51:37,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:51:24" (1/3) ... [2019-11-24 04:51:37,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb45f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:51:37, skipping insertion in model container [2019-11-24 04:51:37,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:25" (2/3) ... [2019-11-24 04:51:37,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb45f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:51:37, skipping insertion in model container [2019-11-24 04:51:37,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:51:37" (3/3) ... [2019-11-24 04:51:37,116 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product20.cil.c [2019-11-24 04:51:37,123 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:51:37,131 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 04:51:37,141 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 04:51:37,166 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:51:37,167 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:51:37,167 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:51:37,167 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:51:37,167 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:51:37,167 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:51:37,167 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:51:37,168 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:51:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-11-24 04:51:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:51:37,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:37,193 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:37,193 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:37,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1288956813, now seen corresponding path program 1 times [2019-11-24 04:51:37,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:37,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070368000] [2019-11-24 04:51:37,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:37,564 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 04:51:37,564 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070368000] [2019-11-24 04:51:37,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:51:37,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:51:37,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053096946] [2019-11-24 04:51:37,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:51:37,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:51:37,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:51:37,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:51:37,589 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2019-11-24 04:51:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:51:37,628 INFO L93 Difference]: Finished difference Result 104 states and 157 transitions. [2019-11-24 04:51:37,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:51:37,630 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:51:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:51:37,640 INFO L225 Difference]: With dead ends: 104 [2019-11-24 04:51:37,640 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 04:51:37,644 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 04:51:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 04:51:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 04:51:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:51:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 04:51:37,687 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 8 [2019-11-24 04:51:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:51:37,687 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 04:51:37,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:51:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 04:51:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:51:37,688 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:37,689 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:37,689 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:37,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:37,690 INFO L82 PathProgramCache]: Analyzing trace with hash -2030581895, now seen corresponding path program 1 times [2019-11-24 04:51:37,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:37,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996776855] [2019-11-24 04:51:37,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:37,814 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 04:51:37,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996776855] [2019-11-24 04:51:37,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:51:37,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:51:37,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469783936] [2019-11-24 04:51:37,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:51:37,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:51:37,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:51:37,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:51:37,819 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 3 states. [2019-11-24 04:51:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:51:37,842 INFO L93 Difference]: Finished difference Result 98 states and 130 transitions. [2019-11-24 04:51:37,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:51:37,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 04:51:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:51:37,844 INFO L225 Difference]: With dead ends: 98 [2019-11-24 04:51:37,844 INFO L226 Difference]: Without dead ends: 63 [2019-11-24 04:51:37,847 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 04:51:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-24 04:51:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-24 04:51:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-24 04:51:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 90 transitions. [2019-11-24 04:51:37,866 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 90 transitions. Word has length 9 [2019-11-24 04:51:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:51:37,867 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 90 transitions. [2019-11-24 04:51:37,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:51:37,867 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 90 transitions. [2019-11-24 04:51:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:51:37,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:37,870 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:37,871 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:37,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:37,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2022682562, now seen corresponding path program 1 times [2019-11-24 04:51:37,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:37,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266110966] [2019-11-24 04:51:37,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 04:51:38,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266110966] [2019-11-24 04:51:38,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:51:38,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:51:38,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439548065] [2019-11-24 04:51:38,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:51:38,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:51:38,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:51:38,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:51:38,154 INFO L87 Difference]: Start difference. First operand 63 states and 90 transitions. Second operand 6 states. [2019-11-24 04:51:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:51:38,716 INFO L93 Difference]: Finished difference Result 151 states and 207 transitions. [2019-11-24 04:51:38,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:51:38,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-24 04:51:38,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:51:38,720 INFO L225 Difference]: With dead ends: 151 [2019-11-24 04:51:38,720 INFO L226 Difference]: Without dead ends: 130 [2019-11-24 04:51:38,721 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:51:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-24 04:51:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 90. [2019-11-24 04:51:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-24 04:51:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 141 transitions. [2019-11-24 04:51:38,738 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 141 transitions. Word has length 13 [2019-11-24 04:51:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:51:38,738 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 141 transitions. [2019-11-24 04:51:38,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:51:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 141 transitions. [2019-11-24 04:51:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:51:38,739 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:38,740 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:38,740 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:38,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2020705761, now seen corresponding path program 1 times [2019-11-24 04:51:38,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:38,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928511879] [2019-11-24 04:51:38,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 04:51:39,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928511879] [2019-11-24 04:51:39,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:51:39,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:51:39,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995443343] [2019-11-24 04:51:39,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:51:39,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:51:39,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:51:39,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:51:39,028 INFO L87 Difference]: Start difference. First operand 90 states and 141 transitions. Second operand 5 states. [2019-11-24 04:51:39,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:51:39,231 INFO L93 Difference]: Finished difference Result 195 states and 297 transitions. [2019-11-24 04:51:39,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:51:39,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 04:51:39,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:51:39,234 INFO L225 Difference]: With dead ends: 195 [2019-11-24 04:51:39,234 INFO L226 Difference]: Without dead ends: 167 [2019-11-24 04:51:39,235 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:51:39,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2019-11-24 04:51:39,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 142. [2019-11-24 04:51:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-11-24 04:51:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 239 transitions. [2019-11-24 04:51:39,251 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 239 transitions. Word has length 13 [2019-11-24 04:51:39,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:51:39,252 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 239 transitions. [2019-11-24 04:51:39,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:51:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 239 transitions. [2019-11-24 04:51:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 04:51:39,253 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:39,254 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:39,254 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:39,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1620672082, now seen corresponding path program 1 times [2019-11-24 04:51:39,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:39,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314494107] [2019-11-24 04:51:39,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:51:39,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314494107] [2019-11-24 04:51:39,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:51:39,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:51:39,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596903481] [2019-11-24 04:51:39,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:51:39,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:51:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:51:39,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:51:39,310 INFO L87 Difference]: Start difference. First operand 142 states and 239 transitions. Second operand 3 states. [2019-11-24 04:51:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:51:39,340 INFO L93 Difference]: Finished difference Result 414 states and 701 transitions. [2019-11-24 04:51:39,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:51:39,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-24 04:51:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:51:39,344 INFO L225 Difference]: With dead ends: 414 [2019-11-24 04:51:39,344 INFO L226 Difference]: Without dead ends: 276 [2019-11-24 04:51:39,348 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 04:51:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2019-11-24 04:51:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 234. [2019-11-24 04:51:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2019-11-24 04:51:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 415 transitions. [2019-11-24 04:51:39,382 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 415 transitions. Word has length 14 [2019-11-24 04:51:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:51:39,382 INFO L462 AbstractCegarLoop]: Abstraction has 234 states and 415 transitions. [2019-11-24 04:51:39,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:51:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 415 transitions. [2019-11-24 04:51:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:51:39,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:39,384 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:39,384 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:39,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1670468161, now seen corresponding path program 1 times [2019-11-24 04:51:39,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:39,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618786377] [2019-11-24 04:51:39,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:39,591 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 04:51:39,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618786377] [2019-11-24 04:51:39,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136185682] [2019-11-24 04:51:39,592 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 04:51:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:39,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:51:39,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:51:39,946 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 04:51:39,946 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:51:39,969 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 04:51:39,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [368611706] [2019-11-24 04:51:40,026 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-24 04:51:40,027 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:51:40,034 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:51:40,041 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:51:40,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:52:22,426 WARN L192 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 676 [2019-11-24 04:52:25,787 WARN L192 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 291 DAG size of output: 237 [2019-11-24 04:52:26,204 WARN L192 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 04:52:28,548 WARN L192 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 1078