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_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:57:54,911 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:57:54,914 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:57:54,927 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:57:54,928 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:57:54,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:57:54,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:57:54,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:57:54,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:57:54,937 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:57:54,939 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:57:54,939 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:57:54,941 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:57:54,942 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:57:54,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:57:54,946 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:57:54,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:57:54,956 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:57:54,961 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:57:54,962 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:57:54,965 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:57:54,968 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:57:54,971 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 02:57:54,983 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 [2018-10-27 02:57:55,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:57:55,015 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:57:55,016 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:57:55,016 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:57:55,016 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:57:55,017 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:57:55,018 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:57:55,018 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:57:55,018 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:57:55,018 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:57:55,018 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:57:55,019 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:57:55,019 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:57:55,019 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:57:55,021 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:57:55,021 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:57:55,021 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:57:55,021 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:57:55,021 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:57:55,022 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:57:55,022 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:57:55,022 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:57:55,022 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:57:55,022 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:57:55,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:57:55,024 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:57:55,024 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:57:55,024 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:57:55,025 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:57:55,025 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:57:55,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:57:55,025 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:57:55,025 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:57:55,025 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:57:55,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:57:55,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:57:55,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:57:55,117 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:57:55,118 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:57:55,118 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-10-27 02:57:55,187 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1de8ff605/9dfb3e70bdff487bbf480b694513a6ba/FLAGf415cfb8b [2018-10-27 02:57:56,047 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:57:56,048 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-10-27 02:57:56,088 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1de8ff605/9dfb3e70bdff487bbf480b694513a6ba/FLAGf415cfb8b [2018-10-27 02:57:56,108 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1de8ff605/9dfb3e70bdff487bbf480b694513a6ba [2018-10-27 02:57:56,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:57:56,125 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:57:56,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:57:56,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:57:56,132 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:57:56,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:57:56" (1/1) ... [2018-10-27 02:57:56,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31151419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:56, skipping insertion in model container [2018-10-27 02:57:56,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:57:56" (1/1) ... [2018-10-27 02:57:56,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:57:56,336 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:57:57,697 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:57:57,702 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:57:58,377 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:57:58,412 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:57:58,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58 WrapperNode [2018-10-27 02:57:58,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:57:58,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:57:58,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:57:58,414 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:57:58,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (1/1) ... [2018-10-27 02:57:58,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (1/1) ... [2018-10-27 02:57:59,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:57:59,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:57:59,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:57:59,038 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:57:59,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (1/1) ... [2018-10-27 02:57:59,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (1/1) ... [2018-10-27 02:57:59,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (1/1) ... [2018-10-27 02:57:59,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (1/1) ... [2018-10-27 02:57:59,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (1/1) ... [2018-10-27 02:57:59,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (1/1) ... [2018-10-27 02:57:59,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (1/1) ... [2018-10-27 02:57:59,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:57:59,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:57:59,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:57:59,348 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:57:59,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (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 [2018-10-27 02:57:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:57:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:57:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:57:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:57:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:57:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:57:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:57:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:57:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:57:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:57:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:57:59,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:57:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:57:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:58:10,922 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:58:10,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:58:10 BoogieIcfgContainer [2018-10-27 02:58:10,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:58:10,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:58:10,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:58:10,927 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:58:10,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:57:56" (1/3) ... [2018-10-27 02:58:10,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17aa6bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:58:10, skipping insertion in model container [2018-10-27 02:58:10,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:57:58" (2/3) ... [2018-10-27 02:58:10,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17aa6bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:58:10, skipping insertion in model container [2018-10-27 02:58:10,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:58:10" (3/3) ... [2018-10-27 02:58:10,931 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label49_true-unreach-call.c [2018-10-27 02:58:10,941 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:58:10,951 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:58:10,969 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:58:11,024 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:58:11,024 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:58:11,024 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:58:11,024 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:58:11,025 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:58:11,025 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:58:11,025 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:58:11,025 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:58:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 02:58:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-27 02:58:11,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:58:11,081 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:58:11,083 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:58:11,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:58:11,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1815238907, now seen corresponding path program 1 times [2018-10-27 02:58:11,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:58:11,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:58:11,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:58:11,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:58:11,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:58:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:58:11,588 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 02:58:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:58:11,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:58:11,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:58:11,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:58:11,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:58:11,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:58:11,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:58:11,658 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-27 02:58:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:58:26,255 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-10-27 02:58:26,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:58:26,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-10-27 02:58:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:58:26,307 INFO L225 Difference]: With dead ends: 4063 [2018-10-27 02:58:26,308 INFO L226 Difference]: Without dead ends: 2937 [2018-10-27 02:58:26,324 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 [2018-10-27 02:58:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-10-27 02:58:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-10-27 02:58:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-10-27 02:58:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-10-27 02:58:26,538 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 65 [2018-10-27 02:58:26,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:58:26,539 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-10-27 02:58:26,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:58:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-10-27 02:58:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 02:58:26,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:58:26,548 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, 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] [2018-10-27 02:58:26,549 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:58:26,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:58:26,549 INFO L82 PathProgramCache]: Analyzing trace with hash -617731529, now seen corresponding path program 1 times [2018-10-27 02:58:26,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:58:26,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:58:26,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:58:26,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:58:26,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:58:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:58:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:58:26,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:58:26,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:58:26,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:58:26,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:58:26,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:58:26,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:58:26,978 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-10-27 02:58:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:58:45,494 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-10-27 02:58:45,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:58:45,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-27 02:58:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:58:45,537 INFO L225 Difference]: With dead ends: 7277 [2018-10-27 02:58:45,537 INFO L226 Difference]: Without dead ends: 5301 [2018-10-27 02:58:45,551 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 [2018-10-27 02:58:45,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-10-27 02:58:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-10-27 02:58:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-10-27 02:58:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-10-27 02:58:45,727 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 136 [2018-10-27 02:58:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:58:45,728 INFO L481 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-10-27 02:58:45,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:58:45,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-10-27 02:58:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 02:58:45,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:58:45,741 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, 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] [2018-10-27 02:58:45,741 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:58:45,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:58:45,742 INFO L82 PathProgramCache]: Analyzing trace with hash -824137274, now seen corresponding path program 1 times [2018-10-27 02:58:45,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:58:45,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:58:45,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:58:45,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:58:45,744 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:58:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:58:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:58:46,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:58:46,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:58:46,021 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:58:46,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:58:46,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:58:46,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:58:46,022 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-10-27 02:59:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:59:00,132 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-10-27 02:59:00,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:59:00,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-27 02:59:00,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:59:00,185 INFO L225 Difference]: With dead ends: 13914 [2018-10-27 02:59:00,186 INFO L226 Difference]: Without dead ends: 8668 [2018-10-27 02:59:00,209 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 [2018-10-27 02:59:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-10-27 02:59:00,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-10-27 02:59:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-10-27 02:59:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-10-27 02:59:00,455 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 139 [2018-10-27 02:59:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:59:00,456 INFO L481 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-10-27 02:59:00,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:59:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-10-27 02:59:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-27 02:59:00,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:59:00,463 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, 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] [2018-10-27 02:59:00,464 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:59:00,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:59:00,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2024947088, now seen corresponding path program 1 times [2018-10-27 02:59:00,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:59:00,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:00,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:59:00,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:00,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:59:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:59:00,792 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:59:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:59:00,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:59:00,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:59:00,952 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:59:00,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:59:00,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:59:00,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:59:00,954 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 6 states. [2018-10-27 02:59:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:59:13,508 INFO L93 Difference]: Finished difference Result 27252 states and 42305 transitions. [2018-10-27 02:59:13,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:59:13,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-10-27 02:59:13,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:59:13,604 INFO L225 Difference]: With dead ends: 27252 [2018-10-27 02:59:13,604 INFO L226 Difference]: Without dead ends: 18653 [2018-10-27 02:59:13,655 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 [2018-10-27 02:59:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2018-10-27 02:59:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 18564. [2018-10-27 02:59:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18564 states. [2018-10-27 02:59:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18564 states to 18564 states and 25945 transitions. [2018-10-27 02:59:14,120 INFO L78 Accepts]: Start accepts. Automaton has 18564 states and 25945 transitions. Word has length 170 [2018-10-27 02:59:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:59:14,121 INFO L481 AbstractCegarLoop]: Abstraction has 18564 states and 25945 transitions. [2018-10-27 02:59:14,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:59:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 18564 states and 25945 transitions. [2018-10-27 02:59:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-27 02:59:14,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:59:14,133 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, 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] [2018-10-27 02:59:14,133 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:59:14,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:59:14,135 INFO L82 PathProgramCache]: Analyzing trace with hash -658364123, now seen corresponding path program 1 times [2018-10-27 02:59:14,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:59:14,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:14,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:59:14,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:14,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:59:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:59:14,520 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:59:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:59:14,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:59:14,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:59:14,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:59:14,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:59:14,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:59:14,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:59:14,649 INFO L87 Difference]: Start difference. First operand 18564 states and 25945 transitions. Second operand 6 states. [2018-10-27 02:59:25,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:59:25,954 INFO L93 Difference]: Finished difference Result 48015 states and 74441 transitions. [2018-10-27 02:59:25,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:59:25,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2018-10-27 02:59:25,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:59:26,097 INFO L225 Difference]: With dead ends: 48015 [2018-10-27 02:59:26,097 INFO L226 Difference]: Without dead ends: 29457 [2018-10-27 02:59:26,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:59:26,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29457 states. [2018-10-27 02:59:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29457 to 29303. [2018-10-27 02:59:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29303 states. [2018-10-27 02:59:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29303 states to 29303 states and 42010 transitions. [2018-10-27 02:59:26,952 INFO L78 Accepts]: Start accepts. Automaton has 29303 states and 42010 transitions. Word has length 233 [2018-10-27 02:59:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:59:26,953 INFO L481 AbstractCegarLoop]: Abstraction has 29303 states and 42010 transitions. [2018-10-27 02:59:26,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:59:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 29303 states and 42010 transitions. [2018-10-27 02:59:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-27 02:59:26,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:59:26,971 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:59:26,971 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:59:26,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:59:26,972 INFO L82 PathProgramCache]: Analyzing trace with hash -16938847, now seen corresponding path program 1 times [2018-10-27 02:59:26,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:59:26,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:26,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:59:26,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:26,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:59:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:59:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 116 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 02:59:27,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:59:27,334 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:59:27,336 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-10-27 02:59:27,339 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], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3047], [3049], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [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], [3281], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 02:59:27,444 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:59:27,444 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:59:35,691 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:59:35,693 INFO L272 AbstractInterpreter]: Visited 110 different actions 110 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 02:59:35,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:59:35,704 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:59:41,192 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 71.93% of their original sizes. [2018-10-27 02:59:41,192 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:59:42,780 INFO L415 sIntCurrentIteration]: We unified 245 AI predicates to 245 [2018-10-27 02:59:42,780 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:59:42,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:59:42,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-10-27 02:59:42,781 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:59:42,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 02:59:42,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 02:59:42,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 02:59:42,787 INFO L87 Difference]: Start difference. First operand 29303 states and 42010 transitions. Second operand 11 states. [2018-10-27 03:00:20,552 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 03:01:37,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:01:37,738 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:01:37,744 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:01:37,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:01:37 BoogieIcfgContainer [2018-10-27 03:01:37,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:01:37,746 INFO L168 Benchmark]: Toolchain (without parser) took 221622.65 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 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 03:01:37,747 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:01:37,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2286.87 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:01:37,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 623.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.5 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 83.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:01:37,750 INFO L168 Benchmark]: Boogie Preprocessor took 309.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:01:37,750 INFO L168 Benchmark]: RCFGBuilder took 11575.09 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 195.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -2.3 MB). Peak memory consumption was 672.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:01:37,751 INFO L168 Benchmark]: TraceAbstraction took 206820.83 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 2.4 GB in the end (delta: -218.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-27 03:01:37,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2286.87 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 623.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.5 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 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 309.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11575.09 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 195.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -2.3 MB). Peak memory consumption was 672.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206820.83 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 2.4 GB in the end (delta: -218.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while BasicCegarLoop was constructing difference of abstraction (29303states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (3127 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 206.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 186.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2573 SDtfs, 20022 SDslu, 2797 SDs, 0 SdLazy, 30204 SolverSat, 9339 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 140.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 295 GetRequests, 248 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29303occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9960439560439559 AbsIntWeakeningRatio, 0.11020408163265306 AbsIntAvgWeakeningVarsNumRemoved, 26.97142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 1310 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 989 NumberOfCodeBlocks, 989 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 983 ConstructedInterpolants, 0 QuantifiedInterpolants, 671693 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 353/424 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown