java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 14:22:55,612 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 14:22:55,614 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 14:22:55,628 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 14:22:55,628 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 14:22:55,630 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 14:22:55,631 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 14:22:55,633 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 14:22:55,635 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 14:22:55,637 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 14:22:55,638 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 14:22:55,638 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 14:22:55,640 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 14:22:55,641 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 14:22:55,642 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 14:22:55,643 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 14:22:55,644 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 14:22:55,646 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 14:22:55,648 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 14:22:55,650 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 14:22:55,651 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 14:22:55,652 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 14:22:55,655 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 14:22:55,665 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 14:22:55,682 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 14:22:55,682 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 14:22:55,683 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 14:22:55,683 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 14:22:55,683 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 14:22:55,684 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 14:22:55,684 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 14:22:55,684 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 14:22:55,684 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 14:22:55,685 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 14:22:55,685 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 14:22:55,685 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 14:22:55,686 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 14:22:55,686 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 14:22:55,686 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 14:22:55,686 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 14:22:55,687 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 14:22:55,687 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 14:22:55,687 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 14:22:55,687 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 14:22:55,687 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 14:22:55,688 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 14:22:55,688 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 14:22:55,688 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 14:22:55,688 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:22:55,688 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 14:22:55,689 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 14:22:55,689 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 14:22:55,689 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 14:22:55,689 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 14:22:55,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 14:22:55,689 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 14:22:55,690 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 14:22:55,690 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 14:22:55,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 14:22:55,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 14:22:55,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 14:22:55,786 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 14:22:55,787 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 14:22:55,788 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label02_true-unreach-call.c [2018-09-15 14:22:56,163 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d326c64c/d685657d20fd49d7858e5f2408f0f70d/FLAGe6a07a251 [2018-09-15 14:22:56,586 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 14:22:56,588 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label02_true-unreach-call.c [2018-09-15 14:22:56,626 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d326c64c/d685657d20fd49d7858e5f2408f0f70d/FLAGe6a07a251 [2018-09-15 14:22:56,649 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d326c64c/d685657d20fd49d7858e5f2408f0f70d [2018-09-15 14:22:56,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 14:22:56,670 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 14:22:56,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 14:22:56,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 14:22:56,687 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 14:22:56,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:22:56" (1/1) ... [2018-09-15 14:22:56,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a46a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:56, skipping insertion in model container [2018-09-15 14:22:56,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:22:56" (1/1) ... [2018-09-15 14:22:56,704 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 14:22:57,402 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:22:57,427 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 14:22:57,622 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:22:57,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57 WrapperNode [2018-09-15 14:22:57,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 14:22:57,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 14:22:57,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 14:22:57,709 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 14:22:57,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (1/1) ... [2018-09-15 14:22:57,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (1/1) ... [2018-09-15 14:22:57,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 14:22:57,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 14:22:57,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 14:22:57,910 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 14:22:57,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (1/1) ... [2018-09-15 14:22:57,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (1/1) ... [2018-09-15 14:22:57,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (1/1) ... [2018-09-15 14:22:57,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (1/1) ... [2018-09-15 14:22:58,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (1/1) ... [2018-09-15 14:22:58,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (1/1) ... [2018-09-15 14:22:58,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (1/1) ... [2018-09-15 14:22:58,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 14:22:58,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 14:22:58,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 14:22:58,363 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 14:22:58,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (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 [2018-09-15 14:22:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 14:22:58,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 14:22:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 14:22:58,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 14:22:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 14:22:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 14:22:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 14:22:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 14:23:02,977 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 14:23:02,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:23:02 BoogieIcfgContainer [2018-09-15 14:23:02,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 14:23:02,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 14:23:02,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 14:23:02,982 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 14:23:02,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 02:22:56" (1/3) ... [2018-09-15 14:23:02,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7671801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:23:02, skipping insertion in model container [2018-09-15 14:23:02,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:22:57" (2/3) ... [2018-09-15 14:23:02,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7671801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:23:02, skipping insertion in model container [2018-09-15 14:23:02,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:23:02" (3/3) ... [2018-09-15 14:23:02,986 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label02_true-unreach-call.c [2018-09-15 14:23:02,996 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 14:23:03,004 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 14:23:03,070 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 14:23:03,072 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 14:23:03,072 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 14:23:03,072 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 14:23:03,073 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 14:23:03,073 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 14:23:03,073 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 14:23:03,073 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 14:23:03,074 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 14:23:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-15 14:23:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-15 14:23:03,144 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:23:03,145 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 14:23:03,146 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:23:03,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1008235991, now seen corresponding path program 1 times [2018-09-15 14:23:03,154 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:23:03,155 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 62 with the following transitions: [2018-09-15 14:23:03,158 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [1088], [1092], [1098], [1102], [1109], [1110], [1111], [1113] [2018-09-15 14:23:03,200 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:23:03,200 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:23:18,099 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:23:18,100 INFO L272 AbstractInterpreter]: Visited 60 different actions 60 times. Never merged. Never widened. Never found a fixpoint. Largest state had 27 variables. [2018-09-15 14:23:18,121 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:23:29,432 INFO L232 lantSequenceWeakener]: Weakened 58 states. On average, predicates are now at 75.25% of their original sizes. [2018-09-15 14:23:29,432 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:23:29,549 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:23:29,550 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:23:29,551 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 14:23:29,551 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:23:29,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 14:23:29,563 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 14:23:29,563 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:23:29,566 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 6 states. [2018-09-15 14:23:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:23:31,980 INFO L93 Difference]: Finished difference Result 776 states and 1363 transitions. [2018-09-15 14:23:31,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 14:23:31,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2018-09-15 14:23:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:23:32,003 INFO L225 Difference]: With dead ends: 776 [2018-09-15 14:23:32,003 INFO L226 Difference]: Without dead ends: 481 [2018-09-15 14:23:32,011 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:23:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-09-15 14:23:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2018-09-15 14:23:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-15 14:23:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 682 transitions. [2018-09-15 14:23:32,097 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 682 transitions. Word has length 61 [2018-09-15 14:23:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:23:32,098 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 682 transitions. [2018-09-15 14:23:32,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 14:23:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 682 transitions. [2018-09-15 14:23:32,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-15 14:23:32,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:23:32,110 INFO L376 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, 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] [2018-09-15 14:23:32,110 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:23:32,111 INFO L82 PathProgramCache]: Analyzing trace with hash -627570367, now seen corresponding path program 1 times [2018-09-15 14:23:32,111 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:23:32,111 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 179 with the following transitions: [2018-09-15 14:23:32,112 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-09-15 14:23:32,120 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:23:32,120 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)