java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:24:32,119 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:24:32,122 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:24:32,139 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:24:32,140 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:24:32,141 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:24:32,143 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:24:32,146 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:24:32,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:24:32,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:24:32,151 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:24:32,151 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:24:32,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:24:32,166 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:24:32,167 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:24:32,168 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:24:32,169 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:24:32,171 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:24:32,176 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:24:32,179 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:24:32,182 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:24:32,184 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:24:32,189 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 12:24:32,201 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:24:32,201 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:24:32,202 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:24:32,203 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:24:32,204 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:24:32,232 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:24:32,232 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:24:32,233 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:24:32,233 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:24:32,233 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:24:32,234 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:24:32,234 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:24:32,234 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:24:32,234 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:24:32,234 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:24:32,235 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:24:32,235 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:24:32,236 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:24:32,236 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:24:32,236 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:24:32,237 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:24:32,237 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:24:32,237 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:24:32,237 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:24:32,237 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:24:32,238 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:24:32,238 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:24:32,238 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:24:32,238 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:24:32,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:24:32,240 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:24:32,240 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:24:32,240 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:24:32,241 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:24:32,241 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:24:32,241 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:24:32,241 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:24:32,241 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:24:32,242 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:24:32,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:24:32,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:24:32,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:24:32,316 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:24:32,317 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:24:32,318 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c [2018-09-18 12:24:32,671 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803e7900e/87f73e02cdb140929ab90921f586b76c/FLAGcf67664b1 [2018-09-18 12:24:33,116 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:24:33,117 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c [2018-09-18 12:24:33,140 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803e7900e/87f73e02cdb140929ab90921f586b76c/FLAGcf67664b1 [2018-09-18 12:24:33,159 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803e7900e/87f73e02cdb140929ab90921f586b76c [2018-09-18 12:24:33,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:24:33,175 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:24:33,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:24:33,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:24:33,185 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:24:33,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:24:33" (1/1) ... [2018-09-18 12:24:33,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e520b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:33, skipping insertion in model container [2018-09-18 12:24:33,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:24:33" (1/1) ... [2018-09-18 12:24:33,205 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:24:34,274 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:24:34,295 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:24:34,766 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:24:34,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34 WrapperNode [2018-09-18 12:24:34,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:24:34,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:24:34,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:24:34,924 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:24:34,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... [2018-09-18 12:24:35,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... [2018-09-18 12:24:35,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:24:35,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:24:35,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:24:35,129 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:24:35,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... [2018-09-18 12:24:35,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... [2018-09-18 12:24:35,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... [2018-09-18 12:24:35,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... [2018-09-18 12:24:35,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... [2018-09-18 12:24:35,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... [2018-09-18 12:24:35,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... [2018-09-18 12:24:35,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:24:35,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:24:35,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:24:35,750 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:24:35,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 12:24:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:24:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:24:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 12:24:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 12:24:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:24:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:24:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:24:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:24:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:24:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:24:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:24:35,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:24:43,490 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:24:43,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:24:43 BoogieIcfgContainer [2018-09-18 12:24:43,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:24:43,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:24:43,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:24:43,495 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:24:43,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:24:33" (1/3) ... [2018-09-18 12:24:43,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fda96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:24:43, skipping insertion in model container [2018-09-18 12:24:43,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:34" (2/3) ... [2018-09-18 12:24:43,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fda96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:24:43, skipping insertion in model container [2018-09-18 12:24:43,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:24:43" (3/3) ... [2018-09-18 12:24:43,499 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label42_true-unreach-call.c [2018-09-18 12:24:43,509 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:24:43,519 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:24:43,579 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:24:43,580 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:24:43,580 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:24:43,580 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:24:43,580 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:24:43,581 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:24:43,581 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:24:43,581 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:24:43,581 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:24:43,626 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-18 12:24:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-18 12:24:43,635 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:43,637 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:43,638 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:43,644 INFO L82 PathProgramCache]: Analyzing trace with hash -385321844, now seen corresponding path program 1 times [2018-09-18 12:24:43,647 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:43,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:43,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:43,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:43,703 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:44,174 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:24:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:24:44,296 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:24:44,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:24:44,297 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:44,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:24:44,326 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:24:44,327 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:24:44,330 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-18 12:24:51,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:51,095 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-18 12:24:51,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:24:51,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-09-18 12:24:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:51,129 INFO L225 Difference]: With dead ends: 2251 [2018-09-18 12:24:51,129 INFO L226 Difference]: Without dead ends: 1474 [2018-09-18 12:24:51,141 INFO L604 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 [2018-09-18 12:24:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-18 12:24:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-18 12:24:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-18 12:24:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-09-18 12:24:51,315 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 56 [2018-09-18 12:24:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:51,315 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-09-18 12:24:51,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:24:51,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-09-18 12:24:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-18 12:24:51,323 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:51,324 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:51,324 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1814229039, now seen corresponding path program 1 times [2018-09-18 12:24:51,325 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:51,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:51,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:51,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:51,326 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:51,689 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:24:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:24:51,809 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:24:51,809 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:24:51,810 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:51,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:24:51,812 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:24:51,812 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:24:51,812 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-09-18 12:25:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:01,533 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-09-18 12:25:01,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:25:01,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-09-18 12:25:01,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:01,554 INFO L225 Difference]: With dead ends: 4422 [2018-09-18 12:25:01,554 INFO L226 Difference]: Without dead ends: 2954 [2018-09-18 12:25:01,559 INFO L604 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 [2018-09-18 12:25:01,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-09-18 12:25:01,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-09-18 12:25:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-09-18 12:25:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-09-18 12:25:01,670 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 131 [2018-09-18 12:25:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:01,671 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-09-18 12:25:01,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:25:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-09-18 12:25:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-18 12:25:01,675 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:01,675 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:25:01,676 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:01,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1830585943, now seen corresponding path program 1 times [2018-09-18 12:25:01,676 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:01,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:01,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:01,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:01,678 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:01,933 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:25:01,933 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:25:01,933 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:25:01,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:25:01,934 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:25:01,934 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:25:01,935 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-09-18 12:25:07,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:07,464 INFO L93 Difference]: Finished difference Result 7337 states and 12456 transitions. [2018-09-18 12:25:07,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:25:07,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-18 12:25:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:07,489 INFO L225 Difference]: With dead ends: 7337 [2018-09-18 12:25:07,489 INFO L226 Difference]: Without dead ends: 4415 [2018-09-18 12:25:07,498 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:25:07,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2018-09-18 12:25:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4397. [2018-09-18 12:25:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4397 states. [2018-09-18 12:25:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6494 transitions. [2018-09-18 12:25:07,634 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6494 transitions. Word has length 143 [2018-09-18 12:25:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:07,635 INFO L480 AbstractCegarLoop]: Abstraction has 4397 states and 6494 transitions. [2018-09-18 12:25:07,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:25:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6494 transitions. [2018-09-18 12:25:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-18 12:25:07,639 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:07,639 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:25:07,639 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:07,639 INFO L82 PathProgramCache]: Analyzing trace with hash 215050342, now seen corresponding path program 1 times [2018-09-18 12:25:07,640 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:07,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:07,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:07,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:07,644 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:08,015 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:25:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:08,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:08,147 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:25:08,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:08,156 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:08,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:08,451 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:08,736 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:25:08,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-18 12:25:08,736 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:25:08,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:25:08,737 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:25:08,738 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:25:08,738 INFO L87 Difference]: Start difference. First operand 4397 states and 6494 transitions. Second operand 3 states. [2018-09-18 12:25:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:13,311 INFO L93 Difference]: Finished difference Result 11636 states and 17268 transitions. [2018-09-18 12:25:13,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:25:13,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-09-18 12:25:13,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:13,355 INFO L225 Difference]: With dead ends: 11636 [2018-09-18 12:25:13,356 INFO L226 Difference]: Without dead ends: 7245 [2018-09-18 12:25:13,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:25:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2018-09-18 12:25:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 6542. [2018-09-18 12:25:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6542 states. [2018-09-18 12:25:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6542 states to 6542 states and 8967 transitions. [2018-09-18 12:25:13,703 INFO L78 Accepts]: Start accepts. Automaton has 6542 states and 8967 transitions. Word has length 168 [2018-09-18 12:25:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:13,704 INFO L480 AbstractCegarLoop]: Abstraction has 6542 states and 8967 transitions. [2018-09-18 12:25:13,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:25:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 6542 states and 8967 transitions. [2018-09-18 12:25:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-18 12:25:13,711 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:13,711 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 12:25:13,713 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:13,714 INFO L82 PathProgramCache]: Analyzing trace with hash 780929093, now seen corresponding path program 1 times [2018-09-18 12:25:13,714 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:13,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:13,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:13,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:13,716 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:14,012 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:25:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:25:14,065 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:14,065 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:25:14,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:14,075 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:14,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-18 12:25:14,320 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:25:14,701 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:25:14,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2018-09-18 12:25:14,702 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:25:14,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:25:14,703 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:25:14,703 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:25:14,707 INFO L87 Difference]: Start difference. First operand 6542 states and 8967 transitions. Second operand 5 states. [2018-09-18 12:25:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:20,229 INFO L93 Difference]: Finished difference Result 13251 states and 18314 transitions. [2018-09-18 12:25:20,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:25:20,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2018-09-18 12:25:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:20,257 INFO L225 Difference]: With dead ends: 13251 [2018-09-18 12:25:20,257 INFO L226 Difference]: Without dead ends: 6715 [2018-09-18 12:25:20,275 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 400 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:25:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2018-09-18 12:25:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 5905. [2018-09-18 12:25:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5905 states. [2018-09-18 12:25:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 7806 transitions. [2018-09-18 12:25:20,419 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 7806 transitions. Word has length 203 [2018-09-18 12:25:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:20,420 INFO L480 AbstractCegarLoop]: Abstraction has 5905 states and 7806 transitions. [2018-09-18 12:25:20,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:25:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 7806 transitions. [2018-09-18 12:25:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-09-18 12:25:20,427 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:20,428 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:25:20,428 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:20,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1522308272, now seen corresponding path program 1 times [2018-09-18 12:25:20,428 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:20,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:20,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:20,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:20,430 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:20,874 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-09-18 12:25:21,231 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 12:25:21,432 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-09-18 12:25:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 98 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:25:21,593 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:21,593 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:25:21,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:21,603 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:21,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:22,192 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-09-18 12:25:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-18 12:25:22,270 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:22,468 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-18 12:25:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 98 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:25:23,411 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:25:23,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-09-18 12:25:23,412 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:25:23,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:25:23,415 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:25:23,415 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:25:23,415 INFO L87 Difference]: Start difference. First operand 5905 states and 7806 transitions. Second operand 5 states. [2018-09-18 12:25:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:32,117 INFO L93 Difference]: Finished difference Result 18456 states and 24774 transitions. [2018-09-18 12:25:32,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 12:25:32,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2018-09-18 12:25:32,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:32,158 INFO L225 Difference]: With dead ends: 18456 [2018-09-18 12:25:32,159 INFO L226 Difference]: Without dead ends: 12557 [2018-09-18 12:25:32,182 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 499 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:25:32,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12557 states. [2018-09-18 12:25:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12557 to 12352. [2018-09-18 12:25:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12352 states. [2018-09-18 12:25:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12352 states to 12352 states and 15166 transitions. [2018-09-18 12:25:32,426 INFO L78 Accepts]: Start accepts. Automaton has 12352 states and 15166 transitions. Word has length 252 [2018-09-18 12:25:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:32,427 INFO L480 AbstractCegarLoop]: Abstraction has 12352 states and 15166 transitions. [2018-09-18 12:25:32,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:25:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 12352 states and 15166 transitions. [2018-09-18 12:25:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-18 12:25:32,434 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:32,435 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:25:32,435 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:32,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1189323996, now seen corresponding path program 1 times [2018-09-18 12:25:32,436 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:32,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:32,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:32,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:32,437 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:32,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:32,962 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-18 12:25:32,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:32,979 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:25:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:33,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:33,282 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:33,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:33,525 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:25:33,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:33,541 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:33,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:33,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:33,896 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:25:33,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 12:25:33,896 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:25:33,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:25:33,897 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:25:33,898 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-18 12:25:33,898 INFO L87 Difference]: Start difference. First operand 12352 states and 15166 transitions. Second operand 9 states. [2018-09-18 12:25:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:57,136 INFO L93 Difference]: Finished difference Result 55790 states and 76326 transitions. [2018-09-18 12:25:57,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-18 12:25:57,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 274 [2018-09-18 12:25:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:57,440 INFO L225 Difference]: With dead ends: 55790 [2018-09-18 12:25:57,440 INFO L226 Difference]: Without dead ends: 40057 [2018-09-18 12:25:57,605 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1164 GetRequests, 1112 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=575, Invalid=2181, Unknown=0, NotChecked=0, Total=2756 [2018-09-18 12:25:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40057 states. [2018-09-18 12:25:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40057 to 37576. [2018-09-18 12:25:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37576 states. [2018-09-18 12:25:59,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37576 states to 37576 states and 46400 transitions. [2018-09-18 12:25:59,248 INFO L78 Accepts]: Start accepts. Automaton has 37576 states and 46400 transitions. Word has length 274 [2018-09-18 12:25:59,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:59,248 INFO L480 AbstractCegarLoop]: Abstraction has 37576 states and 46400 transitions. [2018-09-18 12:25:59,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:25:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 37576 states and 46400 transitions. [2018-09-18 12:25:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-18 12:25:59,260 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:59,260 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 12:25:59,261 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:59,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1216871110, now seen corresponding path program 1 times [2018-09-18 12:25:59,261 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:59,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:59,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:59,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:59,263 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:59,961 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 12:26:00,415 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-18 12:26:00,671 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-09-18 12:26:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 248 proven. 88 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 12:26:01,105 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:26:01,105 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:26:01,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:01,114 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:26:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:01,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:26:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-09-18 12:26:01,479 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:26:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 147 proven. 177 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-18 12:26:02,394 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:26:02,395 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 5] total 17 [2018-09-18 12:26:02,395 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:26:02,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:26:02,396 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:26:02,396 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:26:02,396 INFO L87 Difference]: Start difference. First operand 37576 states and 46400 transitions. Second operand 5 states. [2018-09-18 12:26:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:26:10,723 INFO L93 Difference]: Finished difference Result 75337 states and 93658 transitions. [2018-09-18 12:26:10,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:26:10,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 350 [2018-09-18 12:26:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:26:10,891 INFO L225 Difference]: With dead ends: 75337 [2018-09-18 12:26:10,891 INFO L226 Difference]: Without dead ends: 37767 [2018-09-18 12:26:11,034 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 695 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:26:11,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37767 states. [2018-09-18 12:26:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37767 to 37616. [2018-09-18 12:26:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37616 states. [2018-09-18 12:26:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37616 states to 37616 states and 46435 transitions. [2018-09-18 12:26:11,797 INFO L78 Accepts]: Start accepts. Automaton has 37616 states and 46435 transitions. Word has length 350 [2018-09-18 12:26:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:26:11,797 INFO L480 AbstractCegarLoop]: Abstraction has 37616 states and 46435 transitions. [2018-09-18 12:26:11,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:26:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 37616 states and 46435 transitions. [2018-09-18 12:26:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-09-18 12:26:11,811 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:26:11,812 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 12:26:11,812 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:26:11,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1868754189, now seen corresponding path program 1 times [2018-09-18 12:26:11,813 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:26:11,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:11,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:11,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:11,814 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:26:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:12,310 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:26:12,512 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:26:12,743 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:26:13,084 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-18 12:26:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 206 proven. 221 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:26:13,471 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:26:13,471 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:26:13,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:13,479 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:26:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:13,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:26:14,660 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 12:26:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 380 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-18 12:26:14,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:26:15,497 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-18 12:26:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 257 proven. 88 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 12:26:15,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:26:15,979 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:26:15,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:15,994 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:26:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:16,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:26:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 329 proven. 53 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-18 12:26:16,724 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:26:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 157 proven. 270 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:26:17,466 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:26:17,467 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5, 8, 8] total 27 [2018-09-18 12:26:17,467 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:26:17,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 12:26:17,469 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 12:26:17,469 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2018-09-18 12:26:17,470 INFO L87 Difference]: Start difference. First operand 37616 states and 46435 transitions. Second operand 16 states. [2018-09-18 12:26:25,584 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2018-09-18 12:26:41,899 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-09-18 12:26:46,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:26:46,227 INFO L93 Difference]: Finished difference Result 95441 states and 119999 transitions. [2018-09-18 12:26:46,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-18 12:26:46,228 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 439 [2018-09-18 12:26:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:26:46,466 INFO L225 Difference]: With dead ends: 95441 [2018-09-18 12:26:46,466 INFO L226 Difference]: Without dead ends: 54053 [2018-09-18 12:26:46,653 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1874 GetRequests, 1791 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1316, Invalid=5164, Unknown=0, NotChecked=0, Total=6480 [2018-09-18 12:26:46,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54053 states. [2018-09-18 12:26:47,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54053 to 52728. [2018-09-18 12:26:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52728 states. [2018-09-18 12:26:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52728 states to 52728 states and 61169 transitions. [2018-09-18 12:26:47,604 INFO L78 Accepts]: Start accepts. Automaton has 52728 states and 61169 transitions. Word has length 439 [2018-09-18 12:26:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:26:47,604 INFO L480 AbstractCegarLoop]: Abstraction has 52728 states and 61169 transitions. [2018-09-18 12:26:47,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 12:26:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 52728 states and 61169 transitions. [2018-09-18 12:26:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-09-18 12:26:47,640 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:26:47,641 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:26:47,641 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:26:47,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1225087504, now seen corresponding path program 1 times [2018-09-18 12:26:47,642 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:26:47,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:47,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:47,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:47,643 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:26:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 157 proven. 170 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-18 12:26:48,226 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:26:48,226 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:26:48,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:48,235 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:26:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:48,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:26:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-09-18 12:26:48,611 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:26:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 147 proven. 186 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-18 12:26:49,671 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:26:49,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 12 [2018-09-18 12:26:49,671 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:26:49,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:26:49,672 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:26:49,672 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:26:49,673 INFO L87 Difference]: Start difference. First operand 52728 states and 61169 transitions. Second operand 5 states. [2018-09-18 12:26:57,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:26:57,184 INFO L93 Difference]: Finished difference Result 122095 states and 144213 transitions. [2018-09-18 12:26:57,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:26:57,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 560 [2018-09-18 12:26:57,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:26:57,500 INFO L225 Difference]: With dead ends: 122095 [2018-09-18 12:26:57,501 INFO L226 Difference]: Without dead ends: 69373 [2018-09-18 12:26:57,741 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1114 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:26:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69373 states. [2018-09-18 12:26:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69373 to 68602. [2018-09-18 12:26:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68602 states. [2018-09-18 12:26:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68602 states to 68602 states and 80252 transitions. [2018-09-18 12:26:59,631 INFO L78 Accepts]: Start accepts. Automaton has 68602 states and 80252 transitions. Word has length 560 [2018-09-18 12:26:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:26:59,632 INFO L480 AbstractCegarLoop]: Abstraction has 68602 states and 80252 transitions. [2018-09-18 12:26:59,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:26:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 68602 states and 80252 transitions. [2018-09-18 12:26:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2018-09-18 12:26:59,638 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:26:59,639 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:26:59,639 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:26:59,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1760472468, now seen corresponding path program 1 times [2018-09-18 12:26:59,640 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:26:59,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:59,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:59,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:59,641 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:26:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:00,051 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:27:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 12:27:00,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:27:00,667 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:27:00,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:00,679 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:27:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:00,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:27:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:27:01,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:27:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:27:01,381 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:27:01,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-09-18 12:27:01,381 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:27:01,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:27:01,382 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:27:01,383 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:27:01,384 INFO L87 Difference]: Start difference. First operand 68602 states and 80252 transitions. Second operand 3 states. [2018-09-18 12:27:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:27:06,426 INFO L93 Difference]: Finished difference Result 152225 states and 184536 transitions. [2018-09-18 12:27:06,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:27:06,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 584 [2018-09-18 12:27:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:27:06,769 INFO L225 Difference]: With dead ends: 152225 [2018-09-18 12:27:06,769 INFO L226 Difference]: Without dead ends: 83629 [2018-09-18 12:27:07,112 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1170 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:27:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83629 states. [2018-09-18 12:27:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83629 to 81482. [2018-09-18 12:27:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81482 states. [2018-09-18 12:27:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81482 states to 81482 states and 95356 transitions. [2018-09-18 12:27:08,443 INFO L78 Accepts]: Start accepts. Automaton has 81482 states and 95356 transitions. Word has length 584 [2018-09-18 12:27:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:27:08,444 INFO L480 AbstractCegarLoop]: Abstraction has 81482 states and 95356 transitions. [2018-09-18 12:27:08,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:27:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 81482 states and 95356 transitions. [2018-09-18 12:27:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2018-09-18 12:27:08,466 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:27:08,467 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:27:08,468 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:27:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash 95886104, now seen corresponding path program 1 times [2018-09-18 12:27:08,468 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:27:08,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:27:08,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:08,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:27:08,469 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:27:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 214 proven. 766 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:27:15,993 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:27:15,993 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:27:16,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:16,002 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:27:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:16,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:27:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 631 proven. 2 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-09-18 12:27:17,310 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:27:17,477 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-18 12:27:17,609 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-09-18 12:27:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 424 proven. 88 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2018-09-18 12:27:18,677 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:27:18,677 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:27:18,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:18,694 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:27:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:19,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:27:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 631 proven. 2 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-09-18 12:27:19,783 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:27:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 424 proven. 88 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2018-09-18 12:27:20,890 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:27:20,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5, 5, 5, 5] total 32 [2018-09-18 12:27:20,891 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:27:20,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-18 12:27:20,893 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-18 12:27:20,893 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2018-09-18 12:27:20,894 INFO L87 Difference]: Start difference. First operand 81482 states and 95356 transitions. Second operand 30 states. [2018-09-18 12:27:35,543 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2018-09-18 12:27:38,399 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-09-18 12:27:43,063 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 23 [2018-09-18 12:27:44,362 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 20 [2018-09-18 12:27:45,347 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2018-09-18 12:27:45,640 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2018-09-18 12:27:48,091 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2018-09-18 12:27:49,960 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-09-18 12:27:52,339 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2018-09-18 12:27:53,704 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2018-09-18 12:27:57,687 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2018-09-18 12:28:06,075 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-09-18 12:28:18,625 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2018-09-18 12:28:18,930 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2018-09-18 12:28:20,380 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 Received shutdown request... [2018-09-18 12:28:21,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-09-18 12:28:21,853 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:28:21,858 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:28:21,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:28:21 BoogieIcfgContainer [2018-09-18 12:28:21,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:28:21,859 INFO L168 Benchmark]: Toolchain (without parser) took 228687.39 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 698.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:28:21,860 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-09-18 12:28:21,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1746.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-18 12:28:21,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:28:21,862 INFO L168 Benchmark]: Boogie Preprocessor took 620.86 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 849.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:28:21,863 INFO L168 Benchmark]: RCFGBuilder took 7740.94 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 490.5 MB). Peak memory consumption was 490.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:28:21,864 INFO L168 Benchmark]: TraceAbstraction took 218366.83 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.2 GB). Peak memory consumption was 229.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:28:21,868 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1746.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 204.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 620.86 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 849.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7740.94 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 490.5 MB). Peak memory consumption was 490.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218366.83 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.2 GB). Peak memory consumption was 229.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was constructing difference of abstraction (81482states) and FLOYD_HOARE automaton (currently 187 states, 30 states before enhancement), while ReachableStatesComputation was computing reachable states (72976 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 218.2s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 177.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3452 SDtfs, 91988 SDslu, 4982 SDs, 0 SdLazy, 115150 SolverSat, 19094 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 127.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12057 GetRequests, 11601 SyntacticMatches, 39 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19843 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81482occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 8637 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 9967 NumberOfCodeBlocks, 9967 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 15650 ConstructedInterpolants, 0 QuantifiedInterpolants, 54406657 SizeOfPredicates, 29 NumberOfNonLiveVariables, 8352 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 36 InterpolantComputations, 11 PerfectInterpolantSequences, 9471/12078 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-28-21-886.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-28-21-886.csv Completed graceful shutdown