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_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:20:54,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:20:54,387 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:20:54,405 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:20:54,405 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:20:54,406 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:20:54,408 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:20:54,411 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:20:54,413 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:20:54,414 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:20:54,417 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:20:54,417 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:20:54,418 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:20:54,420 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:20:54,421 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:20:54,422 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:20:54,423 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:20:54,425 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:20:54,427 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:20:54,428 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:20:54,430 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:20:54,431 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:20:54,434 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:20:54,441 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:20:54,441 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:20:54,442 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:20:54,443 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:20:54,443 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 [2018-10-23 22:20:54,460 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:20:54,460 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:20:54,461 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:20:54,461 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:20:54,462 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:20:54,462 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:20:54,462 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:20:54,462 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:20:54,463 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:20:54,463 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:20:54,463 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:20:54,463 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:20:54,464 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:20:54,464 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:20:54,464 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:20:54,464 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:20:54,465 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:20:54,468 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:20:54,468 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:20:54,468 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:20:54,468 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:20:54,469 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:20:54,469 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:20:54,469 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:20:54,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:20:54,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:20:54,470 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:20:54,470 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:20:54,470 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:20:54,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:20:54,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:20:54,471 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:20:54,471 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:20:54,471 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:20:54,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:20:54,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:20:54,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:20:54,567 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:20:54,568 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:20:54,568 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c [2018-10-23 22:20:54,625 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21c9116d7/2629d6caae094dec92d1d3085151af9f/FLAGda06c7444 [2018-10-23 22:20:55,420 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:20:55,421 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c [2018-10-23 22:20:55,465 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21c9116d7/2629d6caae094dec92d1d3085151af9f/FLAGda06c7444 [2018-10-23 22:20:55,489 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21c9116d7/2629d6caae094dec92d1d3085151af9f [2018-10-23 22:20:55,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:20:55,507 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:20:55,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:20:55,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:20:55,515 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:20:55,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:20:55" (1/1) ... [2018-10-23 22:20:55,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c2806f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:55, skipping insertion in model container [2018-10-23 22:20:55,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:20:55" (1/1) ... [2018-10-23 22:20:55,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:20:55,739 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:20:57,339 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:20:57,345 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:20:58,062 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:20:58,099 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:20:58,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58 WrapperNode [2018-10-23 22:20:58,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:20:58,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:20:58,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:20:58,101 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:20:58,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (1/1) ... [2018-10-23 22:20:58,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (1/1) ... [2018-10-23 22:20:58,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:20:58,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:20:58,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:20:58,760 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:20:58,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (1/1) ... [2018-10-23 22:20:58,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (1/1) ... [2018-10-23 22:20:58,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (1/1) ... [2018-10-23 22:20:58,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (1/1) ... [2018-10-23 22:20:58,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (1/1) ... [2018-10-23 22:20:59,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (1/1) ... [2018-10-23 22:20:59,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (1/1) ... [2018-10-23 22:20:59,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:20:59,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:20:59,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:20:59,117 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:20:59,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (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 [2018-10-23 22:20:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:20:59,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:20:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:20:59,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:20:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:20:59,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:20:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:20:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:20:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:20:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:20:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:20:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:20:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:20:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:21:10,989 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:21:10,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:21:10 BoogieIcfgContainer [2018-10-23 22:21:10,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:21:10,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:21:10,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:21:10,994 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:21:10,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:20:55" (1/3) ... [2018-10-23 22:21:10,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d407abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:21:10, skipping insertion in model container [2018-10-23 22:21:10,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:20:58" (2/3) ... [2018-10-23 22:21:10,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d407abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:21:10, skipping insertion in model container [2018-10-23 22:21:10,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:21:10" (3/3) ... [2018-10-23 22:21:10,997 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label29_false-unreach-call.c [2018-10-23 22:21:11,008 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:21:11,024 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:21:11,043 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:21:11,097 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:21:11,097 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:21:11,097 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:21:11,097 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:21:11,097 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:21:11,098 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:21:11,098 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:21:11,098 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:21:11,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-23 22:21:11,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-23 22:21:11,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:21:11,152 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] [2018-10-23 22:21:11,155 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:21:11,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:21:11,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1714801547, now seen corresponding path program 1 times [2018-10-23 22:21:11,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:21:11,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:21:11,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:21:11,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:21:11,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:21:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:21:11,683 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 22:21:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:21:11,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:21:11,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:21:11,698 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:21:11,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:21:11,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:21:11,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:21:11,725 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-23 22:21:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:21:28,460 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-23 22:21:28,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:21:28,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-23 22:21:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:21:28,509 INFO L225 Difference]: With dead ends: 3968 [2018-10-23 22:21:28,509 INFO L226 Difference]: Without dead ends: 2842 [2018-10-23 22:21:28,523 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 [2018-10-23 22:21:28,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-23 22:21:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-23 22:21:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-23 22:21:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-23 22:21:28,739 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 21 [2018-10-23 22:21:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:21:28,740 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-23 22:21:28,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:21:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-23 22:21:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-23 22:21:28,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:21:28,748 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:21:28,750 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:21:28,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:21:28,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1914103630, now seen corresponding path program 1 times [2018-10-23 22:21:28,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:21:28,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:21:28,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:21:28,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:21:28,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:21:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:21:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:21:29,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:21:29,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:21:29,057 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:21:29,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:21:29,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:21:29,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:21:29,061 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-23 22:21:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:21:42,323 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-23 22:21:42,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:21:42,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-10-23 22:21:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:21:42,355 INFO L225 Difference]: With dead ends: 5673 [2018-10-23 22:21:42,355 INFO L226 Difference]: Without dead ends: 3698 [2018-10-23 22:21:42,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:21:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-23 22:21:42,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-23 22:21:42,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-23 22:21:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-10-23 22:21:42,494 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 91 [2018-10-23 22:21:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:21:42,495 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-10-23 22:21:42,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:21:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-10-23 22:21:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-23 22:21:42,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:21:42,508 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:21:42,508 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:21:42,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:21:42,511 INFO L82 PathProgramCache]: Analyzing trace with hash 688522610, now seen corresponding path program 1 times [2018-10-23 22:21:42,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:21:42,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:21:42,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:21:42,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:21:42,513 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:21:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:21:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:21:42,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:21:42,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:21:42,723 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:21:42,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:21:42,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:21:42,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:21:42,725 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-10-23 22:21:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:21:55,496 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-10-23 22:21:55,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:21:55,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-10-23 22:21:55,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:21:55,540 INFO L225 Difference]: With dead ends: 10963 [2018-10-23 22:21:55,541 INFO L226 Difference]: Without dead ends: 7282 [2018-10-23 22:21:55,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:21:55,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-23 22:21:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-23 22:21:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-23 22:21:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-10-23 22:21:55,774 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 93 [2018-10-23 22:21:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:21:55,774 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-10-23 22:21:55,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:21:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-10-23 22:21:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-23 22:21:55,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:21:55,780 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:21:55,783 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:21:55,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:21:55,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1754078826, now seen corresponding path program 1 times [2018-10-23 22:21:55,783 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:21:55,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:21:55,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:21:55,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:21:55,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:21:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:21:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:21:55,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:21:55,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:21:55,960 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:21:55,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:21:55,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:21:55,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:21:55,962 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 3 states. [2018-10-23 22:22:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:22:02,626 INFO L93 Difference]: Finished difference Result 21003 states and 32063 transitions. [2018-10-23 22:22:02,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:22:02,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2018-10-23 22:22:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:22:02,684 INFO L225 Difference]: With dead ends: 21003 [2018-10-23 22:22:02,684 INFO L226 Difference]: Without dead ends: 13834 [2018-10-23 22:22:02,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:22:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2018-10-23 22:22:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 13825. [2018-10-23 22:22:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13825 states. [2018-10-23 22:22:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13825 states to 13825 states and 19394 transitions. [2018-10-23 22:22:03,074 INFO L78 Accepts]: Start accepts. Automaton has 13825 states and 19394 transitions. Word has length 137 [2018-10-23 22:22:03,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:22:03,075 INFO L481 AbstractCegarLoop]: Abstraction has 13825 states and 19394 transitions. [2018-10-23 22:22:03,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:22:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states and 19394 transitions. [2018-10-23 22:22:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-23 22:22:03,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:22:03,084 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:22:03,085 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:22:03,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:22:03,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1376680716, now seen corresponding path program 1 times [2018-10-23 22:22:03,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:22:03,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:22:03,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:22:03,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:22:03,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:22:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:22:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:22:03,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:22:03,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:22:03,327 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:22:03,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:22:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:22:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:22:03,329 INFO L87 Difference]: Start difference. First operand 13825 states and 19394 transitions. Second operand 4 states. [2018-10-23 22:22:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:22:14,759 INFO L93 Difference]: Finished difference Result 53953 states and 81179 transitions. [2018-10-23 22:22:14,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:22:14,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-10-23 22:22:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:22:14,947 INFO L225 Difference]: With dead ends: 53953 [2018-10-23 22:22:14,947 INFO L226 Difference]: Without dead ends: 39321 [2018-10-23 22:22:15,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:22:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39321 states. [2018-10-23 22:22:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39321 to 39285. [2018-10-23 22:22:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39285 states. [2018-10-23 22:22:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39285 states to 39285 states and 54287 transitions. [2018-10-23 22:22:16,037 INFO L78 Accepts]: Start accepts. Automaton has 39285 states and 54287 transitions. Word has length 142 [2018-10-23 22:22:16,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:22:16,038 INFO L481 AbstractCegarLoop]: Abstraction has 39285 states and 54287 transitions. [2018-10-23 22:22:16,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:22:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 39285 states and 54287 transitions. [2018-10-23 22:22:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-23 22:22:16,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:22:16,045 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:22:16,045 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:22:16,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:22:16,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1914147908, now seen corresponding path program 1 times [2018-10-23 22:22:16,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:22:16,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:22:16,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:22:16,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:22:16,047 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:22:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:22:16,333 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:22:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:22:16,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:22:16,745 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:22:16,746 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-10-23 22:22:16,749 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2695], [2697], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3202], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-23 22:22:16,831 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:22:16,831 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:22:22,701 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:22:22,703 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-23 22:22:22,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:22:22,723 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:22:26,014 INFO L232 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 71.23% of their original sizes. [2018-10-23 22:22:26,015 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:22:27,498 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:22:27,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:22:27,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-23 22:22:27,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:22:27,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 22:22:27,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 22:22:27,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:22:27,501 INFO L87 Difference]: Start difference. First operand 39285 states and 54287 transitions. Second operand 10 states. [2018-10-23 22:23:11,218 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 22:24:38,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 22:24:38,567 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:24:38,575 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:24:38,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:24:38 BoogieIcfgContainer [2018-10-23 22:24:38,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:24:38,577 INFO L168 Benchmark]: Toolchain (without parser) took 223071.42 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 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 818.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:24:38,578 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-23 22:24:38,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2591.89 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: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:24:38,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 658.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 815.8 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-23 22:24:38,581 INFO L168 Benchmark]: Boogie Preprocessor took 356.39 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: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:24:38,582 INFO L168 Benchmark]: RCFGBuilder took 11873.38 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 190.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 516.3 kB). Peak memory consumption was 673.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:24:38,583 INFO L168 Benchmark]: TraceAbstraction took 207584.78 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 3.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 606.1 MB. Max. memory is 7.1 GB. [2018-10-23 22:24:38,589 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2591.89 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: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 658.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 815.8 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 356.39 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: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11873.38 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 190.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 516.3 kB). Peak memory consumption was 673.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207584.78 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 3.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 606.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (39285states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (5393 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 207.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 192.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4097 SDtfs, 13001 SDslu, 2230 SDs, 0 SdLazy, 23383 SolverSat, 6162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 145.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 215 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39285occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9945853029651911 AbsIntWeakeningRatio, 0.15083798882681565 AbsIntAvgWeakeningVarsNumRemoved, 55.84357541899441 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 1024 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 228262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 89/156 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown