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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:43:15,048 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:43:15,053 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:43:15,069 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:43:15,069 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:43:15,071 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:43:15,073 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:43:15,074 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:43:15,076 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:43:15,077 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:43:15,078 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:43:15,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:43:15,079 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:43:15,080 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:43:15,081 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:43:15,082 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:43:15,083 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:43:15,085 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:43:15,087 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:43:15,088 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:43:15,089 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:43:15,090 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:43:15,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 05:43:15,099 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:43:15,099 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:43:15,101 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:43:15,101 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:43:15,102 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:43:15,132 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:43:15,133 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:43:15,134 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:43:15,134 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:43:15,134 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:43:15,134 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:43:15,134 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:43:15,135 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:43:15,136 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:43:15,136 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:43:15,136 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:43:15,137 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:43:15,137 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:43:15,137 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:43:15,138 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:43:15,139 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:43:15,139 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:43:15,139 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:43:15,139 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:43:15,139 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:43:15,140 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:43:15,141 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:43:15,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:43:15,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:43:15,141 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:43:15,142 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:43:15,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:43:15,142 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:43:15,142 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:43:15,142 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:43:15,143 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:43:15,143 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:43:15,144 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:43:15,144 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:43:15,144 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:43:15,144 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:43:15,197 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:43:15,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:43:15,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:43:15,219 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:43:15,220 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:43:15,220 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-27 05:43:15,284 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea574567b/e4482bdac24f4f2c9f998239225b072a/FLAGf198656ef [2018-10-27 05:43:15,999 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:43:16,000 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-27 05:43:16,024 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea574567b/e4482bdac24f4f2c9f998239225b072a/FLAGf198656ef [2018-10-27 05:43:16,041 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea574567b/e4482bdac24f4f2c9f998239225b072a [2018-10-27 05:43:16,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:43:16,055 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:43:16,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:16,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:43:16,061 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:43:16,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:16" (1/1) ... [2018-10-27 05:43:16,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d99f780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:16, skipping insertion in model container [2018-10-27 05:43:16,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:16" (1/1) ... [2018-10-27 05:43:16,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:43:16,164 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:43:16,885 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:16,889 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:43:17,142 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:17,162 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:43:17,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17 WrapperNode [2018-10-27 05:43:17,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:17,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:17,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:43:17,164 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:43:17,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:17,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:43:17,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:43:17,514 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:43:17,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (1/1) ... [2018-10-27 05:43:17,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:43:17,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:43:17,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:43:17,736 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:43:17,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (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 05:43:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:43:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:43:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 05:43:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 05:43:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:43:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:43:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:43:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:43:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:43:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:43:23,972 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:43:23,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:23 BoogieIcfgContainer [2018-10-27 05:43:23,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:43:23,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:43:23,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:43:23,982 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:43:23,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:43:16" (1/3) ... [2018-10-27 05:43:23,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f220dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:23, skipping insertion in model container [2018-10-27 05:43:23,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:17" (2/3) ... [2018-10-27 05:43:23,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f220dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:23, skipping insertion in model container [2018-10-27 05:43:23,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:23" (3/3) ... [2018-10-27 05:43:23,985 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label30_false-unreach-call.c [2018-10-27 05:43:23,993 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:43:24,001 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:43:24,019 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:43:24,061 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:43:24,061 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:43:24,061 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:43:24,061 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:43:24,062 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:43:24,062 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:43:24,062 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:43:24,062 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:43:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 05:43:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-27 05:43:24,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:24,105 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] [2018-10-27 05:43:24,107 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:43:24,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:24,116 INFO L82 PathProgramCache]: Analyzing trace with hash 328599972, now seen corresponding path program 1 times [2018-10-27 05:43:24,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:24,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:24,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:24,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:24,177 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:24,623 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 05:43:24,631 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 05:43:24,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:24,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:43:24,634 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:24,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:43:24,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:43:24,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:24,661 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 05:43:32,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:32,082 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 05:43:32,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:43:32,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-27 05:43:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:32,121 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 05:43:32,122 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 05:43:32,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 05:43:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-10-27 05:43:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-10-27 05:43:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-10-27 05:43:32,263 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 22 [2018-10-27 05:43:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:32,264 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-10-27 05:43:32,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:43:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-10-27 05:43:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-27 05:43:32,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:32,274 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:43:32,276 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:43:32,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:32,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1272949813, now seen corresponding path program 1 times [2018-10-27 05:43:32,276 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:32,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:32,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:32,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:32,279 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:32,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:32,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:43:32,572 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:32,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:43:32,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:43:32,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:43:32,576 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-10-27 05:43:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:37,946 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-10-27 05:43:37,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:43:37,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-27 05:43:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:37,977 INFO L225 Difference]: With dead ends: 3259 [2018-10-27 05:43:37,978 INFO L226 Difference]: Without dead ends: 2168 [2018-10-27 05:43:37,985 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 05:43:37,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-10-27 05:43:38,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-10-27 05:43:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-10-27 05:43:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-10-27 05:43:38,124 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 93 [2018-10-27 05:43:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:38,125 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-10-27 05:43:38,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:43:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-10-27 05:43:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 05:43:38,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:38,137 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:43:38,137 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:43:38,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:38,138 INFO L82 PathProgramCache]: Analyzing trace with hash 48893395, now seen corresponding path program 1 times [2018-10-27 05:43:38,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:38,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:38,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:38,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:38,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:38,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:38,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:43:38,457 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:38,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:43:38,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:43:38,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:43:38,459 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-10-27 05:43:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:43,960 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-10-27 05:43:43,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:43:43,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-27 05:43:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:43,998 INFO L225 Difference]: With dead ends: 7053 [2018-10-27 05:43:43,999 INFO L226 Difference]: Without dead ends: 4917 [2018-10-27 05:43:44,021 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 05:43:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-10-27 05:43:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-10-27 05:43:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-10-27 05:43:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-10-27 05:43:44,169 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 121 [2018-10-27 05:43:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:44,170 INFO L481 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-10-27 05:43:44,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:43:44,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-10-27 05:43:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 05:43:44,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:44,173 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:43:44,174 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:43:44,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:44,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1031937393, now seen corresponding path program 1 times [2018-10-27 05:43:44,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:44,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:44,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:44,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:44,176 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:44,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:44,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:43:44,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:44,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:43:44,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:43:44,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:43:44,405 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-10-27 05:43:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:47,202 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-10-27 05:43:47,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:43:47,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-27 05:43:47,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:47,255 INFO L225 Difference]: With dead ends: 11909 [2018-10-27 05:43:47,255 INFO L226 Difference]: Without dead ends: 7038 [2018-10-27 05:43:47,285 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 05:43:47,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-10-27 05:43:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-10-27 05:43:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-10-27 05:43:47,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-10-27 05:43:47,502 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 139 [2018-10-27 05:43:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:47,503 INFO L481 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-10-27 05:43:47,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:43:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-10-27 05:43:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-27 05:43:47,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:47,506 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:47,506 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:43:47,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:47,507 INFO L82 PathProgramCache]: Analyzing trace with hash 203002038, now seen corresponding path program 1 times [2018-10-27 05:43:47,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:47,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:47,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:47,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:47,508 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:47,838 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 05:43:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:48,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:48,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:43:48,315 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:48,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:43:48,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:43:48,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:43:48,317 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-10-27 05:43:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:55,162 INFO L93 Difference]: Finished difference Result 17709 states and 25496 transitions. [2018-10-27 05:43:55,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:43:55,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-10-27 05:43:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:55,232 INFO L225 Difference]: With dead ends: 17709 [2018-10-27 05:43:55,232 INFO L226 Difference]: Without dead ends: 10738 [2018-10-27 05:43:55,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:43:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10738 states. [2018-10-27 05:43:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10738 to 10702. [2018-10-27 05:43:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-10-27 05:43:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-10-27 05:43:55,536 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 186 [2018-10-27 05:43:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:55,536 INFO L481 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-10-27 05:43:55,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:43:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-10-27 05:43:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 05:43:55,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:55,540 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 05:43:55,541 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:43:55,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:55,541 INFO L82 PathProgramCache]: Analyzing trace with hash 773533269, now seen corresponding path program 1 times [2018-10-27 05:43:55,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:55,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:55,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:55,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:55,543 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:43:55,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:43:55,816 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:43:55,818 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-27 05:43:55,820 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 05:43:55,881 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:43:55,881 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:43:56,443 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:43:56,444 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:43:56,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:56,458 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:43:56,987 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.4% of their original sizes. [2018-10-27 05:43:56,988 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:43:57,248 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-10-27 05:43:57,248 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:43:57,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:43:57,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 05:43:57,250 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:57,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:43:57,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:43:57,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:43:57,251 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 6 states. [2018-10-27 05:45:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:45:31,056 INFO L93 Difference]: Finished difference Result 21738 states and 29396 transitions. [2018-10-27 05:45:31,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:45:31,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2018-10-27 05:45:31,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:45:31,102 INFO L225 Difference]: With dead ends: 21738 [2018-10-27 05:45:31,103 INFO L226 Difference]: Without dead ends: 11042 [2018-10-27 05:45:31,136 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:45:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11042 states. [2018-10-27 05:45:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11042 to 11040. [2018-10-27 05:45:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11040 states. [2018-10-27 05:45:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11040 states to 11040 states and 14851 transitions. [2018-10-27 05:45:31,367 INFO L78 Accepts]: Start accepts. Automaton has 11040 states and 14851 transitions. Word has length 223 [2018-10-27 05:45:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:45:31,368 INFO L481 AbstractCegarLoop]: Abstraction has 11040 states and 14851 transitions. [2018-10-27 05:45:31,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:45:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 11040 states and 14851 transitions. [2018-10-27 05:45:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-27 05:45:31,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:45:31,375 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:31,375 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:45:31,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:45:31,376 INFO L82 PathProgramCache]: Analyzing trace with hash -159997069, now seen corresponding path program 1 times [2018-10-27 05:45:31,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:45:31,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:45:31,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:45:31,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:45:31,378 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:45:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:45:31,719 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 05:45:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 117 proven. 116 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-10-27 05:45:32,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:45:32,363 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:45:32,364 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 316 with the following transitions: [2018-10-27 05:45:32,365 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 05:45:32,377 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:45:32,378 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:45:32,715 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:45:32,715 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:45:32,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:45:32,754 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:45:33,091 INFO L227 lantSequenceWeakener]: Weakened 312 states. On average, predicates are now at 80.06% of their original sizes. [2018-10-27 05:45:33,091 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:45:33,524 INFO L415 sIntCurrentIteration]: We unified 314 AI predicates to 314 [2018-10-27 05:45:33,524 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:45:33,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:45:33,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-10-27 05:45:33,524 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:45:33,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:45:33,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:45:33,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:45:33,525 INFO L87 Difference]: Start difference. First operand 11040 states and 14851 transitions. Second operand 10 states. [2018-10-27 05:47:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:47:05,317 INFO L93 Difference]: Finished difference Result 26474 states and 35685 transitions. [2018-10-27 05:47:05,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 05:47:05,318 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 315 [2018-10-27 05:47:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:47:05,388 INFO L225 Difference]: With dead ends: 26474 [2018-10-27 05:47:05,388 INFO L226 Difference]: Without dead ends: 15778 [2018-10-27 05:47:05,431 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 324 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:47:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15778 states. [2018-10-27 05:47:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15778 to 15722. [2018-10-27 05:47:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15722 states. [2018-10-27 05:47:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15722 states to 15722 states and 20113 transitions. [2018-10-27 05:47:05,745 INFO L78 Accepts]: Start accepts. Automaton has 15722 states and 20113 transitions. Word has length 315 [2018-10-27 05:47:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:47:05,746 INFO L481 AbstractCegarLoop]: Abstraction has 15722 states and 20113 transitions. [2018-10-27 05:47:05,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:47:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 15722 states and 20113 transitions. [2018-10-27 05:47:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-10-27 05:47:05,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:47:05,762 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:47:05,762 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:47:05,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:47:05,763 INFO L82 PathProgramCache]: Analyzing trace with hash 308615515, now seen corresponding path program 1 times [2018-10-27 05:47:05,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:47:05,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:05,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:47:05,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:47:05,764 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:47:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:47:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 172 proven. 13 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-27 05:47:06,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:47:06,326 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:47:06,326 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 464 with the following transitions: [2018-10-27 05:47:06,327 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 05:47:06,344 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:47:06,345 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:47:06,990 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:47:06,991 INFO L272 AbstractInterpreter]: Visited 250 different actions 745 times. Merged at 8 different actions 19 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 05:47:07,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:47:07,035 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:47:07,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:47:07,035 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:47:07,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:47:07,055 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:47:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:47:07,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:47:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-10-27 05:47:07,645 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:47:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-10-27 05:47:08,188 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:47:08,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-10-27 05:47:08,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:47:08,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:47:08,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:47:08,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:47:08,191 INFO L87 Difference]: Start difference. First operand 15722 states and 20113 transitions. Second operand 3 states. Received shutdown request... [2018-10-27 05:47:14,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:47:14,388 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:47:14,394 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:47:14,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:47:14 BoogieIcfgContainer [2018-10-27 05:47:14,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:47:14,395 INFO L168 Benchmark]: Toolchain (without parser) took 238341.16 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -76.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 05:47:14,397 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 05:47:14,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1107.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 05:47:14,398 INFO L168 Benchmark]: Boogie Procedure Inliner took 349.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-27 05:47:14,399 INFO L168 Benchmark]: Boogie Preprocessor took 221.03 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-27 05:47:14,400 INFO L168 Benchmark]: RCFGBuilder took 6238.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.7 MB). Peak memory consumption was 257.7 MB. Max. memory is 7.1 GB. [2018-10-27 05:47:14,401 INFO L168 Benchmark]: TraceAbstraction took 230420.46 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 422.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 05:47:14,406 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1107.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 349.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 221.03 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6238.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.7 MB). Peak memory consumption was 257.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230420.46 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 422.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (15722states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (3276 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 230.3s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 220.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1794 SDtfs, 12204 SDslu, 1220 SDs, 0 SdLazy, 14800 SolverSat, 4824 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 183.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1525 GetRequests, 1463 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15722occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.7s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9969682304472174 AbsIntWeakeningRatio, 0.10820895522388059 AbsIntAvgWeakeningVarsNumRemoved, 15.677238805970148 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 221 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 2025 NumberOfCodeBlocks, 2025 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2478 ConstructedInterpolants, 0 QuantifiedInterpolants, 1764459 SizeOfPredicates, 2 NumberOfNonLiveVariables, 685 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 1249/1391 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown