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/Problem13_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:23:52,634 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:23:52,636 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:23:52,653 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:23:52,654 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:23:52,655 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:23:52,658 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:23:52,661 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:23:52,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:23:52,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:23:52,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:23:52,672 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:23:52,675 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:23:52,678 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:23:52,681 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:23:52,682 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:23:52,683 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:23:52,684 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:23:52,688 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:23:52,692 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:23:52,696 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:23:52,698 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:23:52,701 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:23:52,715 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 01:23:52,741 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:23:52,741 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:23:52,742 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:23:52,742 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:23:52,743 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:23:52,744 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:23:52,744 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:23:52,744 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:23:52,744 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:23:52,744 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:23:52,745 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:23:52,745 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:23:52,747 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:23:52,747 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:23:52,747 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:23:52,747 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:23:52,748 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:23:52,748 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:23:52,748 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:23:52,748 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:23:52,748 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:23:52,749 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:23:52,750 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:23:52,750 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:23:52,750 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:23:52,751 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:23:52,751 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:23:52,751 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:23:52,751 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:23:52,751 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:23:52,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:23:52,752 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:23:52,752 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:23:52,752 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:23:52,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:23:52,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:23:52,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:23:52,838 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:23:52,839 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:23:52,840 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-10-24 01:23:52,907 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fbedb7906/fb5fbb5de0214c5faeaaf0e612ba95bb/FLAG876203361 [2018-10-24 01:23:53,838 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:23:53,839 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-10-24 01:23:53,880 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fbedb7906/fb5fbb5de0214c5faeaaf0e612ba95bb/FLAG876203361 [2018-10-24 01:23:53,895 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fbedb7906/fb5fbb5de0214c5faeaaf0e612ba95bb [2018-10-24 01:23:53,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:23:53,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:23:53,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:23:53,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:23:53,916 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:23:53,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:53" (1/1) ... [2018-10-24 01:23:53,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c58b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:53, skipping insertion in model container [2018-10-24 01:23:53,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:53" (1/1) ... [2018-10-24 01:23:53,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:23:54,125 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:23:55,593 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:23:55,599 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:23:56,367 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:23:56,405 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:23:56,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56 WrapperNode [2018-10-24 01:23:56,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:23:56,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:23:56,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:23:56,408 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:23:56,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (1/1) ... [2018-10-24 01:23:56,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (1/1) ... [2018-10-24 01:23:57,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:23:57,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:23:57,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:23:57,081 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:23:57,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (1/1) ... [2018-10-24 01:23:57,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (1/1) ... [2018-10-24 01:23:57,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (1/1) ... [2018-10-24 01:23:57,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (1/1) ... [2018-10-24 01:23:57,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (1/1) ... [2018-10-24 01:23:57,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (1/1) ... [2018-10-24 01:23:57,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (1/1) ... [2018-10-24 01:23:57,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:23:57,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:23:57,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:23:57,550 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:23:57,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (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 01:23:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:23:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:23:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:23:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:23:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:23:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:23:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:23:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:23:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:23:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:23:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:23:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:23:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:23:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:24:08,767 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:24:08,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:24:08 BoogieIcfgContainer [2018-10-24 01:24:08,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:24:08,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:24:08,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:24:08,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:24:08,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:23:53" (1/3) ... [2018-10-24 01:24:08,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65193bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:24:08, skipping insertion in model container [2018-10-24 01:24:08,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:56" (2/3) ... [2018-10-24 01:24:08,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65193bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:24:08, skipping insertion in model container [2018-10-24 01:24:08,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:24:08" (3/3) ... [2018-10-24 01:24:08,777 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label10_true-unreach-call.c [2018-10-24 01:24:08,787 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:24:08,797 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:24:08,815 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:24:08,866 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:24:08,866 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:24:08,866 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:24:08,866 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:24:08,866 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:24:08,867 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:24:08,867 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:24:08,867 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:24:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:24:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-24 01:24:08,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:08,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:24:08,925 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:08,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:08,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2099536220, now seen corresponding path program 1 times [2018-10-24 01:24:08,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:08,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:08,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:08,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:08,987 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:09,479 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 01:24:09,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:09,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:24:09,483 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:09,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:24:09,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:24:09,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:24:09,512 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 01:24:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:28,385 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-10-24 01:24:28,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:24:28,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-24 01:24:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:28,444 INFO L225 Difference]: With dead ends: 4105 [2018-10-24 01:24:28,444 INFO L226 Difference]: Without dead ends: 2979 [2018-10-24 01:24:28,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 01:24:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-10-24 01:24:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-10-24 01:24:28,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-10-24 01:24:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-10-24 01:24:28,737 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 54 [2018-10-24 01:24:28,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:28,737 INFO L481 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-10-24 01:24:28,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:24:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-10-24 01:24:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 01:24:28,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:28,756 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, 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] [2018-10-24 01:24:28,756 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:28,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:28,757 INFO L82 PathProgramCache]: Analyzing trace with hash 5864073, now seen corresponding path program 1 times [2018-10-24 01:24:28,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:28,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:28,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:28,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:28,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:24:29,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:29,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:24:29,278 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:29,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:24:29,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:24:29,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:24:29,281 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-10-24 01:24:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:49,178 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-10-24 01:24:49,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:24:49,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 01:24:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:49,230 INFO L225 Difference]: With dead ends: 10635 [2018-10-24 01:24:49,231 INFO L226 Difference]: Without dead ends: 7792 [2018-10-24 01:24:49,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:24:49,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-10-24 01:24:49,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-10-24 01:24:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-10-24 01:24:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-10-24 01:24:49,479 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 125 [2018-10-24 01:24:49,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:49,479 INFO L481 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-10-24 01:24:49,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:24:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-10-24 01:24:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 01:24:49,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:49,491 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, 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] [2018-10-24 01:24:49,492 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:49,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:49,492 INFO L82 PathProgramCache]: Analyzing trace with hash 652308344, now seen corresponding path program 1 times [2018-10-24 01:24:49,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:49,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:49,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:49,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:49,498 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:24:49,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:49,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:24:49,762 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:49,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:24:49,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:24:49,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:24:49,763 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-10-24 01:25:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:25:07,272 INFO L93 Difference]: Finished difference Result 21344 states and 35686 transitions. [2018-10-24 01:25:07,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:25:07,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-24 01:25:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:25:07,355 INFO L225 Difference]: With dead ends: 21344 [2018-10-24 01:25:07,356 INFO L226 Difference]: Without dead ends: 13621 [2018-10-24 01:25:07,398 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 01:25:07,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13621 states. [2018-10-24 01:25:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13621 to 13540. [2018-10-24 01:25:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13540 states. [2018-10-24 01:25:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13540 states to 13540 states and 20967 transitions. [2018-10-24 01:25:07,772 INFO L78 Accepts]: Start accepts. Automaton has 13540 states and 20967 transitions. Word has length 128 [2018-10-24 01:25:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:25:07,772 INFO L481 AbstractCegarLoop]: Abstraction has 13540 states and 20967 transitions. [2018-10-24 01:25:07,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:25:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 13540 states and 20967 transitions. [2018-10-24 01:25:07,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 01:25:07,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:25:07,788 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:07,788 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:25:07,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:25:07,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1098248393, now seen corresponding path program 1 times [2018-10-24 01:25:07,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:25:07,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:07,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:25:07,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:07,791 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:25:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:25:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:25:08,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:25:08,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:25:08,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:25:08,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:25:08,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:25:08,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:25:08,206 INFO L87 Difference]: Start difference. First operand 13540 states and 20967 transitions. Second operand 5 states. [2018-10-24 01:25:26,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:25:26,407 INFO L93 Difference]: Finished difference Result 40072 states and 65680 transitions. [2018-10-24 01:25:26,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:25:26,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2018-10-24 01:25:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:25:26,539 INFO L225 Difference]: With dead ends: 40072 [2018-10-24 01:25:26,539 INFO L226 Difference]: Without dead ends: 26538 [2018-10-24 01:25:26,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:25:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26538 states. [2018-10-24 01:25:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26538 to 26236. [2018-10-24 01:25:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26236 states. [2018-10-24 01:25:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26236 states to 26236 states and 39281 transitions. [2018-10-24 01:25:27,273 INFO L78 Accepts]: Start accepts. Automaton has 26236 states and 39281 transitions. Word has length 214 [2018-10-24 01:25:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:25:27,273 INFO L481 AbstractCegarLoop]: Abstraction has 26236 states and 39281 transitions. [2018-10-24 01:25:27,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:25:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 26236 states and 39281 transitions. [2018-10-24 01:25:27,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-24 01:25:27,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:25:27,303 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:27,304 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:25:27,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:25:27,304 INFO L82 PathProgramCache]: Analyzing trace with hash -426955638, now seen corresponding path program 1 times [2018-10-24 01:25:27,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:25:27,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:27,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:25:27,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:27,307 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:25:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:25:27,628 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:25:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 94 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:25:28,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:25:28,062 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:25:28,064 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 288 with the following transitions: [2018-10-24 01:25:28,068 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2959], [2961], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3132], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3571], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:25:28,176 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:25:28,177 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:25:38,958 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:25:38,960 INFO L272 AbstractInterpreter]: Visited 165 different actions 165 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 01:25:39,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:25:39,001 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:25:44,304 INFO L232 lantSequenceWeakener]: Weakened 266 states. On average, predicates are now at 71.59% of their original sizes. [2018-10-24 01:25:44,305 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:25:46,368 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:25:46,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:25:46,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 01:25:46,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:25:46,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 01:25:46,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 01:25:46,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-24 01:25:46,370 INFO L87 Difference]: Start difference. First operand 26236 states and 39281 transitions. Second operand 12 states. [2018-10-24 01:26:09,863 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:27:27,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 01:27:27,222 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:27:27,227 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:27:27,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:27:27 BoogieIcfgContainer [2018-10-24 01:27:27,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:27:27,228 INFO L168 Benchmark]: Toolchain (without parser) took 213319.23 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 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 01:27:27,229 INFO L168 Benchmark]: CDTParser took 0.22 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 01:27:27,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2495.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:27,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 673.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.9 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:27,232 INFO L168 Benchmark]: Boogie Preprocessor took 468.01 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:27,233 INFO L168 Benchmark]: RCFGBuilder took 11218.93 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 193.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.2 MB). Peak memory consumption was 668.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:27,234 INFO L168 Benchmark]: TraceAbstraction took 198458.61 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.7 GB in the end (delta: -474.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 01:27:27,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2495.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 673.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.9 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 468.01 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11218.93 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 193.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.2 MB). Peak memory consumption was 668.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198458.61 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.7 GB in the end (delta: -474.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (26236states) and FLOYD_HOARE automaton (currently 11 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (4568 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 198.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 175.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1888 SDtfs, 15397 SDslu, 2308 SDs, 0 SdLazy, 23528 SolverSat, 7400 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 133.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 326 GetRequests, 287 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26236occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9966110812264657 AbsIntWeakeningRatio, 0.0944055944055944 AbsIntAvgWeakeningVarsNumRemoved, 26.066433566433567 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 576 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 808 NumberOfCodeBlocks, 808 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 490756 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 240/308 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown