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/Problem19_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:24:50,762 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:24:50,765 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:24:50,780 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:24:50,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:24:50,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:24:50,783 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:24:50,785 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:24:50,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:24:50,787 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:24:50,788 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:24:50,789 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:24:50,790 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:24:50,791 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:24:50,792 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:24:50,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:24:50,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:24:50,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:24:50,798 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:24:50,799 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:24:50,800 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:24:50,802 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:24:50,804 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:24:50,819 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 02:24:50,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:24:50,843 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:24:50,844 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:24:50,844 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:24:50,844 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:24:50,845 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:24:50,845 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:24:50,845 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:24:50,845 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:24:50,845 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:24:50,846 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:24:50,849 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:24:50,850 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:24:50,850 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:24:50,850 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:24:50,850 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:24:50,851 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:24:50,853 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:24:50,853 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:24:50,853 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:24:50,853 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:24:50,853 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:24:50,854 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:24:50,854 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:24:50,854 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:24:50,854 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:24:50,855 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:24:50,855 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:24:50,855 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:24:50,855 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:24:50,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:24:50,856 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:24:50,856 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:24:50,857 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:24:50,914 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:24:50,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:24:50,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:24:50,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:24:50,941 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:24:50,942 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label34_true-unreach-call.c [2018-10-24 02:24:51,006 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9fde3771/16f0ed03fe9340749a7a92ce26ca914b/FLAGd716f8853 [2018-10-24 02:24:51,867 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:24:51,868 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label34_true-unreach-call.c [2018-10-24 02:24:51,914 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9fde3771/16f0ed03fe9340749a7a92ce26ca914b/FLAGd716f8853 [2018-10-24 02:24:51,931 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9fde3771/16f0ed03fe9340749a7a92ce26ca914b [2018-10-24 02:24:51,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:24:51,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:24:51,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:24:51,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:24:51,952 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:24:51,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:51" (1/1) ... [2018-10-24 02:24:51,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2523ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:51, skipping insertion in model container [2018-10-24 02:24:51,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:51" (1/1) ... [2018-10-24 02:24:51,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:24:52,214 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:24:54,142 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:24:54,148 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:24:55,327 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:24:55,389 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:24:55,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55 WrapperNode [2018-10-24 02:24:55,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:24:55,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:24:55,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:24:55,391 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:24:55,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (1/1) ... [2018-10-24 02:24:55,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (1/1) ... [2018-10-24 02:24:56,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:24:56,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:24:56,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:24:56,129 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:24:56,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (1/1) ... [2018-10-24 02:24:56,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (1/1) ... [2018-10-24 02:24:56,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (1/1) ... [2018-10-24 02:24:56,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (1/1) ... [2018-10-24 02:24:56,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (1/1) ... [2018-10-24 02:24:56,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (1/1) ... [2018-10-24 02:24:56,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (1/1) ... [2018-10-24 02:24:56,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:24:56,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:24:56,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:24:56,649 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:24:56,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (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 02:24:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:24:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:24:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 02:24:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 02:24:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 02:24:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 02:24:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 02:24:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 02:24:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:24:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:24:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:24:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:24:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:24:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:24:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:24:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:24:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:24:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:25:13,810 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:25:13,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:13 BoogieIcfgContainer [2018-10-24 02:25:13,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:25:13,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:25:13,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:25:13,816 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:25:13,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:24:51" (1/3) ... [2018-10-24 02:25:13,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21545674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:13, skipping insertion in model container [2018-10-24 02:25:13,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:55" (2/3) ... [2018-10-24 02:25:13,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21545674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:13, skipping insertion in model container [2018-10-24 02:25:13,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:13" (3/3) ... [2018-10-24 02:25:13,820 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label34_true-unreach-call.c [2018-10-24 02:25:13,830 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:25:13,841 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:25:13,860 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:25:13,914 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:25:13,914 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:25:13,914 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:25:13,915 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:25:13,915 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:25:13,915 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:25:13,915 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:25:13,915 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:25:13,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 02:25:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 02:25:13,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:25:13,988 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, 1, 1, 1] [2018-10-24 02:25:13,990 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:25:13,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:25:13,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1059203938, now seen corresponding path program 1 times [2018-10-24 02:25:14,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:25:14,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:14,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:25:14,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:14,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:25:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:25:14,547 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:25:14,694 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 02:25:14,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:25:14,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 02:25:14,698 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:25:14,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:25:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:25:14,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:25:14,740 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 02:25:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:25:30,649 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-10-24 02:25:30,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:25:30,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-10-24 02:25:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:25:30,696 INFO L225 Difference]: With dead ends: 4999 [2018-10-24 02:25:30,697 INFO L226 Difference]: Without dead ends: 3219 [2018-10-24 02:25:30,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:25:30,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-10-24 02:25:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-10-24 02:25:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-24 02:25:30,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-10-24 02:25:30,914 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 57 [2018-10-24 02:25:30,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:25:30,915 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-10-24 02:25:30,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:25:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-10-24 02:25:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 02:25:30,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:25:30,924 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, 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] [2018-10-24 02:25:30,924 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:25:30,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:25:30,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1018737494, now seen corresponding path program 1 times [2018-10-24 02:25:30,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:25:30,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:30,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:25:30,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:30,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:25:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:25:31,270 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:25:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:25:31,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:25:31,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:25:31,651 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:25:31,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:25:31,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:25:31,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:25:31,655 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-10-24 02:26:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:26:00,680 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-10-24 02:26:00,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:26:00,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-24 02:26:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:26:00,729 INFO L225 Difference]: With dead ends: 9331 [2018-10-24 02:26:00,730 INFO L226 Difference]: Without dead ends: 6122 [2018-10-24 02:26:00,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:26:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-10-24 02:26:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-10-24 02:26:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-10-24 02:26:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-10-24 02:26:00,906 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 129 [2018-10-24 02:26:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:26:00,906 INFO L481 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-10-24 02:26:00,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:26:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-10-24 02:26:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 02:26:00,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:00,915 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, 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] [2018-10-24 02:26:00,915 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:00,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:00,916 INFO L82 PathProgramCache]: Analyzing trace with hash -65738260, now seen corresponding path program 1 times [2018-10-24 02:26:00,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:00,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:00,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:00,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:00,917 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:01,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:01,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:26:01,237 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:01,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:26:01,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:26:01,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:26:01,239 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-10-24 02:26:52,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:26:52,043 INFO L93 Difference]: Finished difference Result 24241 states and 39703 transitions. [2018-10-24 02:26:52,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 02:26:52,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-10-24 02:26:52,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:26:52,160 INFO L225 Difference]: With dead ends: 24241 [2018-10-24 02:26:52,160 INFO L226 Difference]: Without dead ends: 18163 [2018-10-24 02:26:52,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 02:26:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18163 states. [2018-10-24 02:26:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18163 to 18089. [2018-10-24 02:26:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18089 states. [2018-10-24 02:26:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18089 states to 18089 states and 25637 transitions. [2018-10-24 02:26:52,659 INFO L78 Accepts]: Start accepts. Automaton has 18089 states and 25637 transitions. Word has length 147 [2018-10-24 02:26:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:26:52,660 INFO L481 AbstractCegarLoop]: Abstraction has 18089 states and 25637 transitions. [2018-10-24 02:26:52,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:26:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 18089 states and 25637 transitions. [2018-10-24 02:26:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 02:26:52,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:52,666 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, 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] [2018-10-24 02:26:52,667 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:52,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:52,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1608287919, now seen corresponding path program 1 times [2018-10-24 02:26:52,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:52,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:52,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:52,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:52,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:53,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:53,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:26:53,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:53,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:26:53,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:26:53,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:26:53,044 INFO L87 Difference]: Start difference. First operand 18089 states and 25637 transitions. Second operand 5 states. [2018-10-24 02:27:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:27:19,734 INFO L93 Difference]: Finished difference Result 56346 states and 85050 transitions. [2018-10-24 02:27:19,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:27:19,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2018-10-24 02:27:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:27:19,894 INFO L225 Difference]: With dead ends: 56346 [2018-10-24 02:27:19,894 INFO L226 Difference]: Without dead ends: 38263 [2018-10-24 02:27:19,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:27:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38263 states. [2018-10-24 02:27:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38263 to 37204. [2018-10-24 02:27:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37204 states. [2018-10-24 02:27:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37204 states to 37204 states and 50480 transitions. [2018-10-24 02:27:20,805 INFO L78 Accepts]: Start accepts. Automaton has 37204 states and 50480 transitions. Word has length 192 [2018-10-24 02:27:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:27:20,805 INFO L481 AbstractCegarLoop]: Abstraction has 37204 states and 50480 transitions. [2018-10-24 02:27:20,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:27:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 37204 states and 50480 transitions. [2018-10-24 02:27:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-24 02:27:20,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:27:20,815 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:27:20,815 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:27:20,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:27:20,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1511439822, now seen corresponding path program 1 times [2018-10-24 02:27:20,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:27:20,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:20,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:27:20,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:20,817 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:27:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:27:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 100 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:27:21,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:27:21,314 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:27:21,315 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-24 02:27:21,317 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5582], [5584], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 02:27:21,417 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:27:21,417 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:27:23,846 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:27:23,848 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 02:27:23,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:27:23,857 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:27:25,832 INFO L232 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 75.83% of their original sizes. [2018-10-24 02:27:25,832 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:27:26,299 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:27:26,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:27:26,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 02:27:26,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:27:26,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:27:26,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:27:26,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:27:26,302 INFO L87 Difference]: Start difference. First operand 37204 states and 50480 transitions. Second operand 7 states. [2018-10-24 02:27:30,885 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 02:28:30,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:28:30,707 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:28:30,713 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:28:30,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:28:30 BoogieIcfgContainer [2018-10-24 02:28:30,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:28:30,714 INFO L168 Benchmark]: Toolchain (without parser) took 218769.15 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 767.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:30,715 INFO L168 Benchmark]: CDTParser took 0.20 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 02:28:30,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3442.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:30,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 737.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 872.9 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:30,718 INFO L168 Benchmark]: Boogie Preprocessor took 519.53 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 59.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:30,718 INFO L168 Benchmark]: RCFGBuilder took 17162.73 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 165.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.1 MB). Peak memory consumption was 672.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:30,719 INFO L168 Benchmark]: TraceAbstraction took 196900.80 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.5 GB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:30,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 3442.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 737.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 872.9 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 519.53 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 59.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17162.73 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 165.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.1 MB). Peak memory consumption was 672.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 196900.80 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.5 GB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (37204states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (15269 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 196.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 187.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2736 SDtfs, 22249 SDslu, 3270 SDs, 0 SdLazy, 40678 SolverSat, 10283 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 139.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 247 GetRequests, 216 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37204occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9954064892453517 AbsIntWeakeningRatio, 0.12796208530805686 AbsIntAvgWeakeningVarsNumRemoved, 1044.4075829383887 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 1175 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 737 NumberOfCodeBlocks, 737 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 732 ConstructedInterpolants, 0 QuantifiedInterpolants, 477970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 255/323 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown