java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:22:03,682 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:22:03,684 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:22:03,701 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:22:03,702 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:22:03,703 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:22:03,704 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:22:03,708 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:22:03,711 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:22:03,712 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:22:03,713 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:22:03,714 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:22:03,715 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:22:03,717 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:22:03,718 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:22:03,727 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:22:03,729 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:22:03,733 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:22:03,735 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:22:03,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:22:03,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:22:03,741 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:22:03,744 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:22:03,752 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:22:03,771 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:22:03,771 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:22:03,772 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:22:03,772 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:22:03,772 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:22:03,773 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:22:03,773 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:22:03,773 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:22:03,773 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:22:03,773 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:22:03,774 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:22:03,774 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:22:03,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:22:03,775 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:22:03,775 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:22:03,775 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:22:03,775 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:22:03,776 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:22:03,776 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:22:03,776 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:22:03,776 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:22:03,776 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:22:03,777 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:22:03,777 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:22:03,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:22:03,777 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:22:03,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:22:03,778 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:22:03,778 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:22:03,778 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:22:03,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:22:03,778 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:22:03,779 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:22:03,779 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:22:03,828 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:22:03,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:22:03,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:22:03,848 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:22:03,849 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:22:03,850 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c [2018-10-24 22:22:03,910 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5a6c8b92/72c6f6aa761b47199ba26effcb1ce166/FLAGa0efac65a [2018-10-24 22:22:04,627 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:22:04,628 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c [2018-10-24 22:22:04,651 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5a6c8b92/72c6f6aa761b47199ba26effcb1ce166/FLAGa0efac65a [2018-10-24 22:22:04,667 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5a6c8b92/72c6f6aa761b47199ba26effcb1ce166 [2018-10-24 22:22:04,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:22:04,683 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:22:04,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:22:04,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:22:04,696 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:22:04,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:22:04" (1/1) ... [2018-10-24 22:22:04,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ebb76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:04, skipping insertion in model container [2018-10-24 22:22:04,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:22:04" (1/1) ... [2018-10-24 22:22:04,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:22:04,862 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:22:06,010 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:22:06,015 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:22:06,477 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:22:06,506 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:22:06,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06 WrapperNode [2018-10-24 22:22:06,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:22:06,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:22:06,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:22:06,508 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:22:06,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... [2018-10-24 22:22:06,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... [2018-10-24 22:22:06,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:22:06,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:22:06,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:22:06,916 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:22:06,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... [2018-10-24 22:22:06,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... [2018-10-24 22:22:06,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... [2018-10-24 22:22:06,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... [2018-10-24 22:22:07,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... [2018-10-24 22:22:07,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... [2018-10-24 22:22:07,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... [2018-10-24 22:22:07,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:22:07,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:22:07,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:22:07,132 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:22:07,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 22:22:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:22:07,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:22:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:22:07,205 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:22:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:22:07,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:22:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:22:07,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:22:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:22:07,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:22:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:22:07,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:22:14,978 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:22:14,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:22:14 BoogieIcfgContainer [2018-10-24 22:22:14,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:22:14,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:22:14,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:22:14,984 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:22:14,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:22:04" (1/3) ... [2018-10-24 22:22:14,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe0e610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:22:14, skipping insertion in model container [2018-10-24 22:22:14,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:06" (2/3) ... [2018-10-24 22:22:14,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe0e610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:22:14, skipping insertion in model container [2018-10-24 22:22:14,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:22:14" (3/3) ... [2018-10-24 22:22:14,988 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label46_true-unreach-call.c [2018-10-24 22:22:15,000 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:22:15,011 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:22:15,030 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:22:15,079 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:22:15,079 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:22:15,080 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:22:15,080 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:22:15,080 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:22:15,080 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:22:15,080 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:22:15,080 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:22:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:22:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 22:22:15,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:15,133 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:15,136 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:15,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:15,145 INFO L82 PathProgramCache]: Analyzing trace with hash -121741353, now seen corresponding path program 1 times [2018-10-24 22:22:15,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:15,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:15,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:15,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:15,200 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:15,607 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:22:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:15,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:15,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:22:15,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:15,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:22:15,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:22:15,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:22:15,754 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 22:22:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:23,259 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 22:22:23,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:22:23,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-10-24 22:22:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:23,313 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 22:22:23,314 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 22:22:23,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:22:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 22:22:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 22:22:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 22:22:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 22:22:23,527 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 43 [2018-10-24 22:22:23,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:23,528 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 22:22:23,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:22:23,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 22:22:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 22:22:23,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:23,544 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:23,545 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:23,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:23,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1147726576, now seen corresponding path program 1 times [2018-10-24 22:22:23,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:23,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:23,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:23,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:23,547 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:23,927 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:22:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:23,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:23,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:22:23,999 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:24,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:22:24,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:22:24,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:22:24,002 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 22:22:36,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:36,134 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-10-24 22:22:36,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:22:36,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 22:22:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:36,172 INFO L225 Difference]: With dead ends: 5789 [2018-10-24 22:22:36,173 INFO L226 Difference]: Without dead ends: 4321 [2018-10-24 22:22:36,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:22:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-10-24 22:22:36,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-10-24 22:22:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-10-24 22:22:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-10-24 22:22:36,358 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 117 [2018-10-24 22:22:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:36,359 INFO L481 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-10-24 22:22:36,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:22:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-10-24 22:22:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-24 22:22:36,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:36,371 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:36,371 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:36,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:36,372 INFO L82 PathProgramCache]: Analyzing trace with hash 562465401, now seen corresponding path program 1 times [2018-10-24 22:22:36,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:36,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:36,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:36,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:36,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:36,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:36,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:22:36,602 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:36,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:22:36,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:22:36,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:22:36,603 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 5 states. [2018-10-24 22:22:48,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:48,816 INFO L93 Difference]: Finished difference Result 14334 states and 23470 transitions. [2018-10-24 22:22:48,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:22:48,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-10-24 22:22:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:48,868 INFO L225 Difference]: With dead ends: 14334 [2018-10-24 22:22:48,868 INFO L226 Difference]: Without dead ends: 10045 [2018-10-24 22:22:48,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:22:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2018-10-24 22:22:49,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 9941. [2018-10-24 22:22:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9941 states. [2018-10-24 22:22:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 14581 transitions. [2018-10-24 22:22:49,153 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 14581 transitions. Word has length 120 [2018-10-24 22:22:49,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:49,154 INFO L481 AbstractCegarLoop]: Abstraction has 9941 states and 14581 transitions. [2018-10-24 22:22:49,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:22:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 14581 transitions. [2018-10-24 22:22:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-24 22:22:49,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:49,158 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:49,158 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:49,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:49,159 INFO L82 PathProgramCache]: Analyzing trace with hash -534758187, now seen corresponding path program 1 times [2018-10-24 22:22:49,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:49,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:49,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:49,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:49,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:49,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:49,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:22:49,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:49,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:22:49,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:22:49,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:22:49,381 INFO L87 Difference]: Start difference. First operand 9941 states and 14581 transitions. Second operand 4 states. [2018-10-24 22:22:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:57,659 INFO L93 Difference]: Finished difference Result 29927 states and 46847 transitions. [2018-10-24 22:22:57,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:22:57,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2018-10-24 22:22:57,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:57,759 INFO L225 Difference]: With dead ends: 29927 [2018-10-24 22:22:57,759 INFO L226 Difference]: Without dead ends: 19992 [2018-10-24 22:22:57,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:22:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19992 states. [2018-10-24 22:22:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19992 to 19989. [2018-10-24 22:22:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19989 states. [2018-10-24 22:22:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19989 states to 19989 states and 29115 transitions. [2018-10-24 22:22:58,262 INFO L78 Accepts]: Start accepts. Automaton has 19989 states and 29115 transitions. Word has length 150 [2018-10-24 22:22:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:58,263 INFO L481 AbstractCegarLoop]: Abstraction has 19989 states and 29115 transitions. [2018-10-24 22:22:58,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:22:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 19989 states and 29115 transitions. [2018-10-24 22:22:58,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-24 22:22:58,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:58,269 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:58,269 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:58,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:58,269 INFO L82 PathProgramCache]: Analyzing trace with hash 307186760, now seen corresponding path program 1 times [2018-10-24 22:22:58,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:58,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:58,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:58,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:58,273 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:58,565 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:22:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 72 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:22:58,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:22:58,784 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:22:58,787 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-24 22:22:58,789 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1867], [1869], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:22:58,878 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:22:58,878 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:23:00,281 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:23:00,282 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:23:00,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:00,294 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:23:01,873 INFO L232 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 78.01% of their original sizes. [2018-10-24 22:23:01,873 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:23:02,146 INFO L413 sIntCurrentIteration]: We have 189 unified AI predicates [2018-10-24 22:23:02,147 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:23:02,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:23:02,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 22:23:02,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:02,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:23:02,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:23:02,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:23:02,150 INFO L87 Difference]: Start difference. First operand 19989 states and 29115 transitions. Second operand 7 states. [2018-10-24 22:23:05,108 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:24:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:24:46,680 INFO L93 Difference]: Finished difference Result 40677 states and 59145 transitions. [2018-10-24 22:24:46,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:24:46,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2018-10-24 22:24:46,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:24:46,743 INFO L225 Difference]: With dead ends: 40677 [2018-10-24 22:24:46,743 INFO L226 Difference]: Without dead ends: 20694 [2018-10-24 22:24:46,776 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:24:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20694 states. [2018-10-24 22:24:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20694 to 20692. [2018-10-24 22:24:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20692 states. [2018-10-24 22:24:47,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20692 states to 20692 states and 29827 transitions. [2018-10-24 22:24:47,151 INFO L78 Accepts]: Start accepts. Automaton has 20692 states and 29827 transitions. Word has length 190 [2018-10-24 22:24:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:24:47,152 INFO L481 AbstractCegarLoop]: Abstraction has 20692 states and 29827 transitions. [2018-10-24 22:24:47,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:24:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 20692 states and 29827 transitions. [2018-10-24 22:24:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-24 22:24:47,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:24:47,162 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:24:47,162 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:24:47,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:24:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash 419013354, now seen corresponding path program 1 times [2018-10-24 22:24:47,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:24:47,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:47,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:24:47,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:24:47,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:24:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:24:47,667 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:24:47,847 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:24:48,074 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:24:48,477 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 22:24:48,870 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-24 22:24:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 167 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:24:49,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:24:49,147 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:24:49,147 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-10-24 22:24:49,148 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1867], [1869], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:24:49,158 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:24:49,158 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:25:00,310 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:25:00,310 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:25:00,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:25:00,316 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:25:04,061 INFO L232 lantSequenceWeakener]: Weakened 69 states. On average, predicates are now at 79.63% of their original sizes. [2018-10-24 22:25:04,061 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 22:25:51,338 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:25:51,343 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:25:51,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:25:51 BoogieIcfgContainer [2018-10-24 22:25:51,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:25:51,345 INFO L168 Benchmark]: Toolchain (without parser) took 226662.93 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 928.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:51,346 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:25:51,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1820.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:51,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 408.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -963.5 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:51,348 INFO L168 Benchmark]: Boogie Preprocessor took 215.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:51,349 INFO L168 Benchmark]: RCFGBuilder took 7847.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 496.9 MB). Peak memory consumption was 496.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:51,350 INFO L168 Benchmark]: TraceAbstraction took 216363.28 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 434.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:51,355 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1820.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 408.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -963.5 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 215.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7847.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 496.9 MB). Peak memory consumption was 496.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216363.28 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 434.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was analyzing trace of length 378 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 216.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 145.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2606 SDtfs, 9612 SDslu, 870 SDs, 0 SdLazy, 22242 SolverSat, 5405 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 219 GetRequests, 194 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20692occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9956746184429909 AbsIntWeakeningRatio, 0.10265486725663717 AbsIntAvgWeakeningVarsNumRemoved, 358.4849557522124 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 135 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 620 NumberOfCodeBlocks, 620 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 213073 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 185/250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown