java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:04:13,043 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:04:13,046 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:04:13,062 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:04:13,063 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:04:13,064 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:04:13,065 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:04:13,069 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:04:13,071 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:04:13,072 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:04:13,081 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:04:13,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:04:13,082 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:04:13,084 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:04:13,085 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:04:13,087 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:04:13,088 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:04:13,092 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:04:13,097 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:04:13,099 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:04:13,101 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:04:13,102 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:04:13,105 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:04:13,112 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 23:04:13,112 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 23:04:13,113 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 23:04:13,114 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 23:04:13,114 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 23:04:13,129 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:04:13,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:04:13,130 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:04:13,131 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:04:13,131 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:04:13,131 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:04:13,131 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:04:13,131 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:04:13,132 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:04:13,132 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:04:13,132 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:04:13,132 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:04:13,133 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:04:13,133 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:04:13,133 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:04:13,133 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:04:13,134 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:04:13,134 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:04:13,134 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:04:13,134 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:04:13,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:04:13,135 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:04:13,135 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:04:13,135 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:04:13,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:04:13,136 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:04:13,136 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:04:13,136 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:04:13,136 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:04:13,136 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:04:13,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:04:13,137 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:04:13,137 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:04:13,137 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:04:13,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:04:13,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:04:13,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:04:13,223 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:04:13,223 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:04:13,224 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label43_false-unreach-call.c [2018-10-23 23:04:13,296 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d46011ef5/6f90f664c1af4ef2993c366052e0f026/FLAGfa2a254b2 [2018-10-23 23:04:14,188 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:04:14,189 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label43_false-unreach-call.c [2018-10-23 23:04:14,241 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d46011ef5/6f90f664c1af4ef2993c366052e0f026/FLAGfa2a254b2 [2018-10-23 23:04:14,259 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d46011ef5/6f90f664c1af4ef2993c366052e0f026 [2018-10-23 23:04:14,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:04:14,275 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:04:14,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:04:14,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:04:14,282 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:04:14,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:04:14" (1/1) ... [2018-10-23 23:04:14,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:14, skipping insertion in model container [2018-10-23 23:04:14,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:04:14" (1/1) ... [2018-10-23 23:04:14,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:04:14,557 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:04:16,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:04:16,475 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:04:17,463 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:04:17,517 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:04:17,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17 WrapperNode [2018-10-23 23:04:17,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:04:17,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:04:17,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:04:17,520 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:04:17,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (1/1) ... [2018-10-23 23:04:17,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (1/1) ... [2018-10-23 23:04:18,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:04:18,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:04:18,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:04:18,372 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:04:18,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (1/1) ... [2018-10-23 23:04:18,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (1/1) ... [2018-10-23 23:04:18,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (1/1) ... [2018-10-23 23:04:18,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (1/1) ... [2018-10-23 23:04:18,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (1/1) ... [2018-10-23 23:04:18,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (1/1) ... [2018-10-23 23:04:18,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (1/1) ... [2018-10-23 23:04:18,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:04:18,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:04:18,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:04:18,918 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:04:18,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (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 [2018-10-23 23:04:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:04:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:04:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-23 23:04:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-23 23:04:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-23 23:04:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-23 23:04:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 23:04:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 23:04:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 23:04:18,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 23:04:18,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 23:04:18,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 23:04:18,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:04:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:04:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:04:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:04:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:04:18,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:04:37,151 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:04:37,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:04:37 BoogieIcfgContainer [2018-10-23 23:04:37,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:04:37,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:04:37,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:04:37,157 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:04:37,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:04:14" (1/3) ... [2018-10-23 23:04:37,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d96a119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:04:37, skipping insertion in model container [2018-10-23 23:04:37,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:04:17" (2/3) ... [2018-10-23 23:04:37,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d96a119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:04:37, skipping insertion in model container [2018-10-23 23:04:37,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:04:37" (3/3) ... [2018-10-23 23:04:37,161 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label43_false-unreach-call.c [2018-10-23 23:04:37,171 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:04:37,184 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:04:37,203 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:04:37,260 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:04:37,261 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:04:37,261 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:04:37,261 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:04:37,261 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:04:37,261 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:04:37,262 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:04:37,262 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:04:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-23 23:04:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-23 23:04:37,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:04:37,332 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:04:37,335 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:04:37,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:04:37,341 INFO L82 PathProgramCache]: Analyzing trace with hash 522574706, now seen corresponding path program 1 times [2018-10-23 23:04:37,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:04:37,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:04:37,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:04:37,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:04:37,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:04:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:04:37,761 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:04:37,871 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 23:04:37,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:04:37,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:04:37,876 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:04:37,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:04:37,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:04:37,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:04:37,897 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-23 23:04:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:04:57,696 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-23 23:04:57,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:04:57,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-23 23:04:57,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:04:57,744 INFO L225 Difference]: With dead ends: 4998 [2018-10-23 23:04:57,745 INFO L226 Difference]: Without dead ends: 3218 [2018-10-23 23:04:57,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:04:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-23 23:04:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-23 23:04:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-23 23:04:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-23 23:04:57,948 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 29 [2018-10-23 23:04:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:04:57,949 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-23 23:04:57,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:04:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-23 23:04:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-23 23:04:57,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:04:57,959 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:57,960 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:04:57,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:04:57,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1863173052, now seen corresponding path program 1 times [2018-10-23 23:04:57,961 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:04:57,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:04:57,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:04:57,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:04:57,962 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:04:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:04:58,344 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:04:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:04:58,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:04:58,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:04:58,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:04:58,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:04:58,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:04:58,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:04:58,757 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-23 23:05:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:05:24,234 INFO L93 Difference]: Finished difference Result 10761 states and 19806 transitions. [2018-10-23 23:05:24,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:05:24,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-10-23 23:05:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:05:24,285 INFO L225 Difference]: With dead ends: 10761 [2018-10-23 23:05:24,285 INFO L226 Difference]: Without dead ends: 7552 [2018-10-23 23:05:24,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:05:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2018-10-23 23:05:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 7515. [2018-10-23 23:05:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7515 states. [2018-10-23 23:05:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 12487 transitions. [2018-10-23 23:05:24,498 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 12487 transitions. Word has length 101 [2018-10-23 23:05:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:05:24,498 INFO L481 AbstractCegarLoop]: Abstraction has 7515 states and 12487 transitions. [2018-10-23 23:05:24,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:05:24,498 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 12487 transitions. [2018-10-23 23:05:24,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-23 23:05:24,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:05:24,503 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:24,503 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:05:24,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:05:24,504 INFO L82 PathProgramCache]: Analyzing trace with hash -678238073, now seen corresponding path program 1 times [2018-10-23 23:05:24,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:05:24,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:24,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:05:24,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:24,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:05:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:05:24,785 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:05:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:05:24,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:05:24,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:05:24,997 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:05:24,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:05:24,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:05:24,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:05:24,999 INFO L87 Difference]: Start difference. First operand 7515 states and 12487 transitions. Second operand 6 states. [2018-10-23 23:05:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:05:53,881 INFO L93 Difference]: Finished difference Result 23954 states and 40161 transitions. [2018-10-23 23:05:53,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 23:05:53,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-23 23:05:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:05:53,953 INFO L225 Difference]: With dead ends: 23954 [2018-10-23 23:05:53,953 INFO L226 Difference]: Without dead ends: 16445 [2018-10-23 23:05:53,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:05:54,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16445 states. [2018-10-23 23:05:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16445 to 16259. [2018-10-23 23:05:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16259 states. [2018-10-23 23:05:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16259 states to 16259 states and 25428 transitions. [2018-10-23 23:05:54,376 INFO L78 Accepts]: Start accepts. Automaton has 16259 states and 25428 transitions. Word has length 103 [2018-10-23 23:05:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:05:54,377 INFO L481 AbstractCegarLoop]: Abstraction has 16259 states and 25428 transitions. [2018-10-23 23:05:54,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:05:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 16259 states and 25428 transitions. [2018-10-23 23:05:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-23 23:05:54,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:05:54,387 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:54,387 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:05:54,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:05:54,391 INFO L82 PathProgramCache]: Analyzing trace with hash -89352888, now seen corresponding path program 1 times [2018-10-23 23:05:54,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:05:54,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:54,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:05:54,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:05:54,393 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:05:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:05:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:05:54,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:05:54,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:05:54,609 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:05:54,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:05:54,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:05:54,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:05:54,610 INFO L87 Difference]: Start difference. First operand 16259 states and 25428 transitions. Second operand 6 states. [2018-10-23 23:06:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:06:42,296 INFO L93 Difference]: Finished difference Result 61591 states and 100051 transitions. [2018-10-23 23:06:42,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:06:42,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-23 23:06:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:06:42,492 INFO L225 Difference]: With dead ends: 61591 [2018-10-23 23:06:42,493 INFO L226 Difference]: Without dead ends: 45338 [2018-10-23 23:06:42,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 23:06:42,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45338 states. [2018-10-23 23:06:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45338 to 45238. [2018-10-23 23:06:43,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45238 states. [2018-10-23 23:06:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45238 states to 45238 states and 66782 transitions. [2018-10-23 23:06:43,904 INFO L78 Accepts]: Start accepts. Automaton has 45238 states and 66782 transitions. Word has length 125 [2018-10-23 23:06:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:06:43,905 INFO L481 AbstractCegarLoop]: Abstraction has 45238 states and 66782 transitions. [2018-10-23 23:06:43,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:06:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 45238 states and 66782 transitions. [2018-10-23 23:06:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-23 23:06:43,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:06:43,908 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:43,909 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:06:43,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:06:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1894066628, now seen corresponding path program 1 times [2018-10-23 23:06:43,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:06:43,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:43,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:06:43,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:43,911 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:06:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:06:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:06:44,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:06:44,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:06:44,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:06:44,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:06:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:06:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:06:44,211 INFO L87 Difference]: Start difference. First operand 45238 states and 66782 transitions. Second operand 5 states. [2018-10-23 23:07:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:07:11,756 INFO L93 Difference]: Finished difference Result 137038 states and 216335 transitions. [2018-10-23 23:07:11,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 23:07:11,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-10-23 23:07:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:07:12,128 INFO L225 Difference]: With dead ends: 137038 [2018-10-23 23:07:12,128 INFO L226 Difference]: Without dead ends: 91806 [2018-10-23 23:07:12,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 23:07:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91806 states. [2018-10-23 23:07:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91806 to 91078. [2018-10-23 23:07:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91078 states. [2018-10-23 23:07:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91078 states to 91078 states and 128641 transitions. [2018-10-23 23:07:14,039 INFO L78 Accepts]: Start accepts. Automaton has 91078 states and 128641 transitions. Word has length 134 [2018-10-23 23:07:14,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:07:14,040 INFO L481 AbstractCegarLoop]: Abstraction has 91078 states and 128641 transitions. [2018-10-23 23:07:14,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:07:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 91078 states and 128641 transitions. [2018-10-23 23:07:14,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-23 23:07:14,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:07:14,045 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:14,045 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:07:14,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:07:14,047 INFO L82 PathProgramCache]: Analyzing trace with hash -711587973, now seen corresponding path program 1 times [2018-10-23 23:07:14,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:07:14,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:07:14,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:07:14,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:07:14,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:07:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:07:14,343 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:07:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:07:14,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:07:14,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:07:14,483 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:07:14,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:07:14,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:07:14,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:07:14,484 INFO L87 Difference]: Start difference. First operand 91078 states and 128641 transitions. Second operand 6 states. [2018-10-23 23:07:39,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:07:39,919 INFO L93 Difference]: Finished difference Result 213838 states and 319194 transitions. [2018-10-23 23:07:39,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:07:39,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-23 23:07:39,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:07:40,406 INFO L225 Difference]: With dead ends: 213838 [2018-10-23 23:07:40,407 INFO L226 Difference]: Without dead ends: 122766 [2018-10-23 23:07:40,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:07:40,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122766 states. [2018-10-23 23:07:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122766 to 122406. [2018-10-23 23:07:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122406 states. [2018-10-23 23:07:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122406 states to 122406 states and 168279 transitions. [2018-10-23 23:07:44,229 INFO L78 Accepts]: Start accepts. Automaton has 122406 states and 168279 transitions. Word has length 162 [2018-10-23 23:07:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:07:44,230 INFO L481 AbstractCegarLoop]: Abstraction has 122406 states and 168279 transitions. [2018-10-23 23:07:44,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:07:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 122406 states and 168279 transitions. [2018-10-23 23:07:44,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-23 23:07:44,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:07:44,244 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 23:07:44,244 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:07:44,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:07:44,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1973286022, now seen corresponding path program 1 times [2018-10-23 23:07:44,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:07:44,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:07:44,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:07:44,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:07:44,250 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:07:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:07:44,503 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:07:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 23:07:44,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:07:44,771 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:07:44,772 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-10-23 23:07:44,774 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5358], [5360], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-23 23:07:44,842 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:07:44,842 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:07:48,312 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 23:07:48,353 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:07:48,355 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-23 23:07:49,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:07:49,251 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:07:51,412 INFO L232 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 75.28% of their original sizes. [2018-10-23 23:07:51,412 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:07:51,746 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:07:51,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:07:51,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-23 23:07:51,747 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:07:51,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 23:07:51,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 23:07:51,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 23:07:51,749 INFO L87 Difference]: Start difference. First operand 122406 states and 168279 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 23:08:03,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:08:03,138 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:08:03,144 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:08:03,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:08:03 BoogieIcfgContainer [2018-10-23 23:08:03,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:08:03,146 INFO L168 Benchmark]: Toolchain (without parser) took 228871.43 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -424.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 23:08:03,147 INFO L168 Benchmark]: CDTParser took 0.23 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 23:08:03,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3242.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 992.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:08:03,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 852.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.0 MB). Free memory was 992.7 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 23:08:03,150 INFO L168 Benchmark]: Boogie Preprocessor took 545.87 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2018-10-23 23:08:03,151 INFO L168 Benchmark]: RCFGBuilder took 18234.05 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 202.4 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 421.3 MB). Peak memory consumption was 685.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:08:03,154 INFO L168 Benchmark]: TraceAbstraction took 205991.70 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: -48.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 23:08:03,163 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3242.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 992.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 852.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.0 MB). Free memory was 992.7 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 545.87 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18234.05 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 202.4 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 421.3 MB). Peak memory consumption was 685.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205991.70 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: -48.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was constructing difference of abstraction (122406states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (5470 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 205.8s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 187.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3671 SDtfs, 37544 SDslu, 4221 SDs, 0 SdLazy, 65200 SolverSat, 15440 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 155.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 252 GetRequests, 208 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122406occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9953304986470815 AbsIntWeakeningRatio, 0.1407035175879397 AbsIntAvgWeakeningVarsNumRemoved, 1026.9045226130654 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 1414 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 854 NumberOfCodeBlocks, 854 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 847 ConstructedInterpolants, 0 QuantifiedInterpolants, 538694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 159/224 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown