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/Problem12_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:20:02,070 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:20:02,073 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:20:02,091 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:20:02,092 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:20:02,094 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:20:02,095 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:20:02,098 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:20:02,102 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:20:02,109 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:20:02,110 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:20:02,110 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:20:02,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:20:02,115 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:20:02,119 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:20:02,120 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:20:02,122 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:20:02,127 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:20:02,132 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:20:02,134 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:20:02,136 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:20:02,137 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:20:02,140 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:20:02,140 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:20:02,143 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:20:02,144 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:20:02,144 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:20:02,145 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:20:02,146 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:20:02,149 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:20:02,149 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:20:02,151 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:20:02,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:20:02,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:20:02,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:20:02,155 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:20:02,156 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 [2018-09-14 17:20:02,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:20:02,185 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:20:02,187 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:20:02,187 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:20:02,187 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:20:02,187 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:20:02,188 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:20:02,188 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:20:02,188 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:20:02,188 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:20:02,188 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:20:02,189 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:20:02,190 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:20:02,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:20:02,191 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:20:02,191 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:20:02,191 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:20:02,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:20:02,192 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:20:02,192 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:20:02,192 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:20:02,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:20:02,194 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:20:02,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:20:02,194 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:20:02,194 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:20:02,195 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:20:02,195 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:20:02,195 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:20:02,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:20:02,195 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:20:02,196 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:20:02,196 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:20:02,264 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:20:02,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:20:02,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:20:02,288 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:20:02,289 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:20:02,290 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14_true-unreach-call.c [2018-09-14 17:20:02,653 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa7e9ecb/78976a5689bf456d9bcda74e342a1221/FLAG7df177bd4 [2018-09-14 17:20:03,131 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:20:03,132 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label14_true-unreach-call.c [2018-09-14 17:20:03,162 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa7e9ecb/78976a5689bf456d9bcda74e342a1221/FLAG7df177bd4 [2018-09-14 17:20:03,181 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa7e9ecb/78976a5689bf456d9bcda74e342a1221 [2018-09-14 17:20:03,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:20:03,197 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:20:03,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:20:03,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:20:03,207 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:20:03,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:20:03" (1/1) ... [2018-09-14 17:20:03,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77eb0580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:03, skipping insertion in model container [2018-09-14 17:20:03,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:20:03" (1/1) ... [2018-09-14 17:20:03,226 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:20:04,539 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:20:04,580 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:20:05,199 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:20:05,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05 WrapperNode [2018-09-14 17:20:05,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:20:05,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:20:05,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:20:05,436 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:20:05,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:05,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:05,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:20:05,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:20:05,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:20:05,657 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:20:06,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:20:06,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:20:06,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:20:06,616 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:20:06,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (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 [2018-09-14 17:20:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:20:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:20:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:20:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:20:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:20:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:20:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:20:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:20:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:20:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:20:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:20:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:20:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:20:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:20:17,971 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:20:17,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:20:17 BoogieIcfgContainer [2018-09-14 17:20:17,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:20:17,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:20:17,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:20:17,976 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:20:17,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:20:03" (1/3) ... [2018-09-14 17:20:17,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125cf986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:20:17, skipping insertion in model container [2018-09-14 17:20:17,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (2/3) ... [2018-09-14 17:20:17,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125cf986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:20:17, skipping insertion in model container [2018-09-14 17:20:17,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:20:17" (3/3) ... [2018-09-14 17:20:17,980 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label14_true-unreach-call.c [2018-09-14 17:20:17,991 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:20:18,004 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:20:18,068 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:20:18,069 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:20:18,070 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:20:18,070 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:20:18,070 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:20:18,070 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:20:18,070 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:20:18,070 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:20:18,071 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:20:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:20:18,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-14 17:20:18,120 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:18,122 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] [2018-09-14 17:20:18,123 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:18,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1198355269, now seen corresponding path program 1 times [2018-09-14 17:20:18,131 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:18,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:18,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:18,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:18,186 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:18,738 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:18,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:20:18,739 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:18,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:20:18,765 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:20:18,769 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:20:18,778 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-09-14 17:20:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:20:33,273 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-09-14 17:20:33,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:20:33,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-09-14 17:20:33,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:20:33,322 INFO L225 Difference]: With dead ends: 3234 [2018-09-14 17:20:33,323 INFO L226 Difference]: Without dead ends: 2388 [2018-09-14 17:20:33,333 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:20:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-09-14 17:20:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-09-14 17:20:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:20:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-09-14 17:20:33,619 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 55 [2018-09-14 17:20:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:20:33,620 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-09-14 17:20:33,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:20:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-09-14 17:20:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-14 17:20:33,628 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:33,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:20:33,629 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:33,629 INFO L82 PathProgramCache]: Analyzing trace with hash -295662528, now seen corresponding path program 1 times [2018-09-14 17:20:33,630 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:33,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:33,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:33,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:33,631 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:33,959 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:33,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:20:33,960 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:33,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:20:33,964 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:20:33,964 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:20:33,964 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-09-14 17:20:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:20:48,101 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-09-14 17:20:48,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:20:48,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-09-14 17:20:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:20:48,132 INFO L225 Difference]: With dead ends: 4873 [2018-09-14 17:20:48,132 INFO L226 Difference]: Without dead ends: 3275 [2018-09-14 17:20:48,138 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:20:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-09-14 17:20:48,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-09-14 17:20:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-09-14 17:20:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4817 transitions. [2018-09-14 17:20:48,285 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4817 transitions. Word has length 135 [2018-09-14 17:20:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:20:48,286 INFO L480 AbstractCegarLoop]: Abstraction has 3241 states and 4817 transitions. [2018-09-14 17:20:48,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:20:48,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4817 transitions. [2018-09-14 17:20:48,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-14 17:20:48,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:48,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:20:48,301 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:48,302 INFO L82 PathProgramCache]: Analyzing trace with hash 269121193, now seen corresponding path program 1 times [2018-09-14 17:20:48,302 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:48,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:48,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:48,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:48,304 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:48,697 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:20:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:49,055 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:49,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:20:49,056 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:49,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:20:49,059 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:20:49,059 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:20:49,060 INFO L87 Difference]: Start difference. First operand 3241 states and 4817 transitions. Second operand 6 states. [2018-09-14 17:20:57,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:20:57,117 INFO L93 Difference]: Finished difference Result 9802 states and 14871 transitions. [2018-09-14 17:20:57,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:20:57,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-09-14 17:20:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:20:57,159 INFO L225 Difference]: With dead ends: 9802 [2018-09-14 17:20:57,160 INFO L226 Difference]: Without dead ends: 6567 [2018-09-14 17:20:57,174 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:20:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6567 states. [2018-09-14 17:20:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6567 to 6493. [2018-09-14 17:20:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6493 states. [2018-09-14 17:20:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 9459 transitions. [2018-09-14 17:20:57,386 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 9459 transitions. Word has length 164 [2018-09-14 17:20:57,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:20:57,387 INFO L480 AbstractCegarLoop]: Abstraction has 6493 states and 9459 transitions. [2018-09-14 17:20:57,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:20:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 9459 transitions. [2018-09-14 17:20:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-09-14 17:20:57,392 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:57,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:20:57,393 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:57,393 INFO L82 PathProgramCache]: Analyzing trace with hash 960199113, now seen corresponding path program 1 times [2018-09-14 17:20:57,393 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:57,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:57,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:57,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:57,395 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:57,735 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:20:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:57,946 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:57,946 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:20:57,946 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:57,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:20:57,947 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:20:57,947 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:20:57,948 INFO L87 Difference]: Start difference. First operand 6493 states and 9459 transitions. Second operand 6 states. [2018-09-14 17:21:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:08,487 INFO L93 Difference]: Finished difference Result 21852 states and 33071 transitions. [2018-09-14 17:21:08,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:21:08,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-09-14 17:21:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:08,576 INFO L225 Difference]: With dead ends: 21852 [2018-09-14 17:21:08,576 INFO L226 Difference]: Without dead ends: 15365 [2018-09-14 17:21:08,618 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 [2018-09-14 17:21:08,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15365 states. [2018-09-14 17:21:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15365 to 15282. [2018-09-14 17:21:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15282 states. [2018-09-14 17:21:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15282 states to 15282 states and 21382 transitions. [2018-09-14 17:21:08,991 INFO L78 Accepts]: Start accepts. Automaton has 15282 states and 21382 transitions. Word has length 180 [2018-09-14 17:21:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:08,992 INFO L480 AbstractCegarLoop]: Abstraction has 15282 states and 21382 transitions. [2018-09-14 17:21:08,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:21:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 15282 states and 21382 transitions. [2018-09-14 17:21:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-09-14 17:21:08,998 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:08,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:21:08,998 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:08,999 INFO L82 PathProgramCache]: Analyzing trace with hash -178064156, now seen corresponding path program 1 times [2018-09-14 17:21:08,999 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:09,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:09,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:09,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:09,000 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 17:21:09,266 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:09,266 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 [2018-09-14 17:21:09,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:09,277 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:09,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:09,483 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:09,900 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:21:09,900 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-09-14 17:21:09,901 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:09,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:21:09,902 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:21:09,902 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:21:09,902 INFO L87 Difference]: Start difference. First operand 15282 states and 21382 transitions. Second operand 3 states. [2018-09-14 17:21:16,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:16,084 INFO L93 Difference]: Finished difference Result 36871 states and 52420 transitions. [2018-09-14 17:21:16,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:21:16,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2018-09-14 17:21:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:16,193 INFO L225 Difference]: With dead ends: 36871 [2018-09-14 17:21:16,194 INFO L226 Difference]: Without dead ends: 21595 [2018-09-14 17:21:16,283 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 400 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:21:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21595 states. [2018-09-14 17:21:16,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21595 to 21595. [2018-09-14 17:21:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21595 states. [2018-09-14 17:21:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21595 states to 21595 states and 29668 transitions. [2018-09-14 17:21:17,038 INFO L78 Accepts]: Start accepts. Automaton has 21595 states and 29668 transitions. Word has length 201 [2018-09-14 17:21:17,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:17,039 INFO L480 AbstractCegarLoop]: Abstraction has 21595 states and 29668 transitions. [2018-09-14 17:21:17,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:21:17,039 INFO L276 IsEmpty]: Start isEmpty. Operand 21595 states and 29668 transitions. [2018-09-14 17:21:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-14 17:21:17,043 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:17,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:21:17,044 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:17,044 INFO L82 PathProgramCache]: Analyzing trace with hash -869187975, now seen corresponding path program 1 times [2018-09-14 17:21:17,045 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:17,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:17,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:17,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:17,046 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:17,316 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:21:17,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:21:17,317 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:17,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:21:17,318 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:21:17,318 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:21:17,318 INFO L87 Difference]: Start difference. First operand 21595 states and 29668 transitions. Second operand 4 states. [2018-09-14 17:21:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:29,055 INFO L93 Difference]: Finished difference Result 55592 states and 76975 transitions. [2018-09-14 17:21:29,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:21:29,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204 [2018-09-14 17:21:29,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:29,190 INFO L225 Difference]: With dead ends: 55592 [2018-09-14 17:21:29,190 INFO L226 Difference]: Without dead ends: 34003 [2018-09-14 17:21:29,249 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:21:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34003 states. [2018-09-14 17:21:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34003 to 34003. [2018-09-14 17:21:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34003 states. [2018-09-14 17:21:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34003 states to 34003 states and 42866 transitions. [2018-09-14 17:21:30,203 INFO L78 Accepts]: Start accepts. Automaton has 34003 states and 42866 transitions. Word has length 204 [2018-09-14 17:21:30,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:30,204 INFO L480 AbstractCegarLoop]: Abstraction has 34003 states and 42866 transitions. [2018-09-14 17:21:30,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:21:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 34003 states and 42866 transitions. [2018-09-14 17:21:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-14 17:21:30,220 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:30,220 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, 2, 2, 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] [2018-09-14 17:21:30,220 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:30,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2070168558, now seen corresponding path program 1 times [2018-09-14 17:21:30,226 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:30,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:30,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:30,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:30,227 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:21:30,512 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:21:30,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:21:30,513 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:30,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:21:30,514 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:21:30,514 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:21:30,514 INFO L87 Difference]: Start difference. First operand 34003 states and 42866 transitions. Second operand 4 states. [2018-09-14 17:21:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:40,673 INFO L93 Difference]: Finished difference Result 130313 states and 174323 transitions. [2018-09-14 17:21:40,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:21:40,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 278 [2018-09-14 17:21:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:41,033 INFO L225 Difference]: With dead ends: 130313 [2018-09-14 17:21:41,033 INFO L226 Difference]: Without dead ends: 96316 [2018-09-14 17:21:41,147 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:21:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96316 states. [2018-09-14 17:21:42,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96316 to 96316. [2018-09-14 17:21:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96316 states. [2018-09-14 17:21:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96316 states to 96316 states and 125291 transitions. [2018-09-14 17:21:42,860 INFO L78 Accepts]: Start accepts. Automaton has 96316 states and 125291 transitions. Word has length 278 [2018-09-14 17:21:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:42,861 INFO L480 AbstractCegarLoop]: Abstraction has 96316 states and 125291 transitions. [2018-09-14 17:21:42,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:21:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 96316 states and 125291 transitions. [2018-09-14 17:21:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-09-14 17:21:42,885 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:42,885 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:21:42,886 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:42,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1967621997, now seen corresponding path program 1 times [2018-09-14 17:21:42,886 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:42,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:42,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:42,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:42,887 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 97 proven. 15 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:21:43,214 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:43,214 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 [2018-09-14 17:21:43,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:43,222 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:43,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:43,456 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:43,762 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:43,763 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:21:43,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:43,789 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:44,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 17:21:44,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 17:21:45,210 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 17:21:45,210 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-14 17:21:45,211 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:45,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:21:45,212 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:21:45,212 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:21:45,212 INFO L87 Difference]: Start difference. First operand 96316 states and 125291 transitions. Second operand 5 states. [2018-09-14 17:21:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:53,716 INFO L93 Difference]: Finished difference Result 217776 states and 289333 transitions. [2018-09-14 17:21:53,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:21:53,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2018-09-14 17:21:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:54,853 INFO L225 Difference]: With dead ends: 217776 [2018-09-14 17:21:54,854 INFO L226 Difference]: Without dead ends: 121466 [2018-09-14 17:21:55,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1184 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:21:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121466 states. [2018-09-14 17:21:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121466 to 121466. [2018-09-14 17:21:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121466 states. [2018-09-14 17:21:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121466 states to 121466 states and 157506 transitions. [2018-09-14 17:21:57,082 INFO L78 Accepts]: Start accepts. Automaton has 121466 states and 157506 transitions. Word has length 299 [2018-09-14 17:21:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:57,083 INFO L480 AbstractCegarLoop]: Abstraction has 121466 states and 157506 transitions. [2018-09-14 17:21:57,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:21:57,083 INFO L276 IsEmpty]: Start isEmpty. Operand 121466 states and 157506 transitions. [2018-09-14 17:21:57,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-09-14 17:21:57,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:57,110 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:21:57,110 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:57,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1119677174, now seen corresponding path program 1 times [2018-09-14 17:21:57,111 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:57,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:57,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:57,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:57,112 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 147 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:21:57,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:57,550 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:21:57,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:57,566 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:57,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-14 17:21:57,855 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-14 17:21:58,300 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:21:58,301 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-09-14 17:21:58,301 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:58,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:21:58,302 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:21:58,302 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:21:58,302 INFO L87 Difference]: Start difference. First operand 121466 states and 157506 transitions. Second operand 3 states. [2018-09-14 17:22:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:05,870 INFO L93 Difference]: Finished difference Result 242926 states and 315907 transitions. [2018-09-14 17:22:05,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:22:05,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2018-09-14 17:22:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:06,183 INFO L225 Difference]: With dead ends: 242926 [2018-09-14 17:22:06,183 INFO L226 Difference]: Without dead ends: 121466 [2018-09-14 17:22:06,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 612 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:22:06,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121466 states. [2018-09-14 17:22:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121466 to 120694. [2018-09-14 17:22:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120694 states. [2018-09-14 17:22:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120694 states to 120694 states and 148108 transitions. [2018-09-14 17:22:09,447 INFO L78 Accepts]: Start accepts. Automaton has 120694 states and 148108 transitions. Word has length 306 [2018-09-14 17:22:09,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:09,448 INFO L480 AbstractCegarLoop]: Abstraction has 120694 states and 148108 transitions. [2018-09-14 17:22:09,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:22:09,448 INFO L276 IsEmpty]: Start isEmpty. Operand 120694 states and 148108 transitions. [2018-09-14 17:22:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-09-14 17:22:09,480 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:09,480 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:09,480 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:09,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1706413494, now seen corresponding path program 1 times [2018-09-14 17:22:09,481 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:09,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:09,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:09,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:09,482 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:22:09,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:09,847 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:22:09,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:09,856 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:09,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:22:10,072 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:22:10,253 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:10,253 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:22:10,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:10,270 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:10,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:22:10,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:22:11,506 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:22:11,506 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:22:11,506 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:22:11,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:22:11,507 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:22:11,507 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:22:11,508 INFO L87 Difference]: Start difference. First operand 120694 states and 148108 transitions. Second operand 9 states. [2018-09-14 17:22:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:30,754 INFO L93 Difference]: Finished difference Result 271313 states and 343111 transitions. [2018-09-14 17:22:30,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 17:22:30,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 373 [2018-09-14 17:22:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:31,225 INFO L225 Difference]: With dead ends: 271313 [2018-09-14 17:22:31,225 INFO L226 Difference]: Without dead ends: 150625 [2018-09-14 17:22:31,387 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1510 GetRequests, 1487 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:22:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150625 states. [2018-09-14 17:22:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150625 to 147263. [2018-09-14 17:22:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147263 states. [2018-09-14 17:22:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147263 states to 147263 states and 179661 transitions. [2018-09-14 17:22:37,605 INFO L78 Accepts]: Start accepts. Automaton has 147263 states and 179661 transitions. Word has length 373 [2018-09-14 17:22:37,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:37,605 INFO L480 AbstractCegarLoop]: Abstraction has 147263 states and 179661 transitions. [2018-09-14 17:22:37,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:22:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 147263 states and 179661 transitions. [2018-09-14 17:22:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-09-14 17:22:37,639 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:37,640 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:37,640 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:37,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1248725200, now seen corresponding path program 1 times [2018-09-14 17:22:37,640 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:37,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:37,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:37,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:37,641 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 223 proven. 120 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:22:38,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:38,058 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 [2018-09-14 17:22:38,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:38,069 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:38,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-14 17:22:38,453 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 223 proven. 120 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:22:38,686 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:38,686 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 [2018-09-14 17:22:38,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:38,704 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:38,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-14 17:22:39,080 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 223 proven. 120 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:22:39,771 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:22:39,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:22:39,771 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:22:39,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:22:39,774 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:22:39,774 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:22:39,774 INFO L87 Difference]: Start difference. First operand 147263 states and 179661 transitions. Second operand 9 states. [2018-09-14 17:22:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:56,231 INFO L93 Difference]: Finished difference Result 306159 states and 419014 transitions. [2018-09-14 17:22:56,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:22:56,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 377 [2018-09-14 17:22:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:56,874 INFO L225 Difference]: With dead ends: 306159 [2018-09-14 17:22:56,874 INFO L226 Difference]: Without dead ends: 139005 [2018-09-14 17:22:57,269 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1509 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:22:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139005 states. [2018-09-14 17:22:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139005 to 136275. [2018-09-14 17:22:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136275 states. [2018-09-14 17:23:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136275 states to 136275 states and 172743 transitions. [2018-09-14 17:23:00,215 INFO L78 Accepts]: Start accepts. Automaton has 136275 states and 172743 transitions. Word has length 377 [2018-09-14 17:23:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:00,215 INFO L480 AbstractCegarLoop]: Abstraction has 136275 states and 172743 transitions. [2018-09-14 17:23:00,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:23:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 136275 states and 172743 transitions. [2018-09-14 17:23:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-09-14 17:23:00,235 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:00,235 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:23:00,235 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:00,236 INFO L82 PathProgramCache]: Analyzing trace with hash 146296403, now seen corresponding path program 1 times [2018-09-14 17:23:00,236 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:00,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:00,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:00,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:00,237 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:23:01,332 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:01,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:23:01,332 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:01,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:23:01,333 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:23:01,333 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:23:01,334 INFO L87 Difference]: Start difference. First operand 136275 states and 172743 transitions. Second operand 3 states. [2018-09-14 17:23:10,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:10,058 INFO L93 Difference]: Finished difference Result 302254 states and 387976 transitions. [2018-09-14 17:23:10,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:23:10,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 425 [2018-09-14 17:23:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:10,511 INFO L225 Difference]: With dead ends: 302254 [2018-09-14 17:23:10,511 INFO L226 Difference]: Without dead ends: 165990 [2018-09-14 17:23:10,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:23:10,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165990 states. [2018-09-14 17:23:13,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165990 to 160484. [2018-09-14 17:23:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160484 states. [2018-09-14 17:23:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160484 states to 160484 states and 199774 transitions. [2018-09-14 17:23:14,028 INFO L78 Accepts]: Start accepts. Automaton has 160484 states and 199774 transitions. Word has length 425 [2018-09-14 17:23:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:14,029 INFO L480 AbstractCegarLoop]: Abstraction has 160484 states and 199774 transitions. [2018-09-14 17:23:14,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:23:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 160484 states and 199774 transitions. [2018-09-14 17:23:14,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2018-09-14 17:23:14,512 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:14,513 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:14,513 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1637105153, now seen corresponding path program 1 times [2018-09-14 17:23:14,514 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:14,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:14,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:14,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:14,515 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 491 proven. 78 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-09-14 17:23:16,049 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:16,049 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 [2018-09-14 17:23:16,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:16,058 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:16,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 818 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-09-14 17:23:17,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 491 proven. 78 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-09-14 17:23:17,854 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:17,854 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:23:17,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:17,870 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:18,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 818 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-09-14 17:23:19,465 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 491 proven. 78 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-09-14 17:23:20,056 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:23:20,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-14 17:23:20,057 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:23:20,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:23:20,059 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:23:20,059 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:23:20,060 INFO L87 Difference]: Start difference. First operand 160484 states and 199774 transitions. Second operand 9 states. [2018-09-14 17:23:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:36,998 INFO L93 Difference]: Finished difference Result 332678 states and 436641 transitions. [2018-09-14 17:23:36,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 17:23:36,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1138 [2018-09-14 17:23:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:37,611 INFO L225 Difference]: With dead ends: 332678 [2018-09-14 17:23:37,611 INFO L226 Difference]: Without dead ends: 172205 [2018-09-14 17:23:37,991 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4568 GetRequests, 4546 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:23:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172205 states. [2018-09-14 17:23:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172205 to 169964. [2018-09-14 17:23:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169964 states. [2018-09-14 17:23:41,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169964 states to 169964 states and 208563 transitions. [2018-09-14 17:23:41,789 INFO L78 Accepts]: Start accepts. Automaton has 169964 states and 208563 transitions. Word has length 1138 [2018-09-14 17:23:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:41,790 INFO L480 AbstractCegarLoop]: Abstraction has 169964 states and 208563 transitions. [2018-09-14 17:23:41,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:23:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 169964 states and 208563 transitions. [2018-09-14 17:23:42,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2018-09-14 17:23:42,147 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:42,148 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:42,148 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:42,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1605175769, now seen corresponding path program 1 times [2018-09-14 17:23:42,149 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:42,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:42,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:42,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:42,150 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-14 17:23:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 150 proven. 224 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:23:47,040 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:47,040 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 [2018-09-14 17:23:47,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:47,048 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:47,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:47,345 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 17:23:47,546 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:23:47,547 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:23:47,552 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:23:47,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:23:47 BoogieIcfgContainer [2018-09-14 17:23:47,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:23:47,554 INFO L168 Benchmark]: Toolchain (without parser) took 224359.93 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.8 GB). Free memory was 1.4 GB in the beginning and 4.3 GB in the end (delta: -2.9 GB). Peak memory consumption was 924.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,555 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:23:47,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2236.22 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,563 INFO L168 Benchmark]: Boogie Preprocessor took 957.93 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 920.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,564 INFO L168 Benchmark]: RCFGBuilder took 11356.49 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 653.8 MB). Peak memory consumption was 653.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,565 INFO L168 Benchmark]: TraceAbstraction took 209580.46 ms. Allocated memory was 2.5 GB in the beginning and 5.4 GB in the end (delta: 2.9 GB). Free memory was 1.7 GB in the beginning and 4.3 GB in the end (delta: -2.7 GB). Peak memory consumption was 259.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,577 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2236.22 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 221.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 957.93 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 920.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11356.49 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 653.8 MB). Peak memory consumption was 653.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209580.46 ms. Allocated memory was 2.5 GB in the beginning and 5.4 GB in the end (delta: 2.9 GB). Free memory was 1.7 GB in the beginning and 4.3 GB in the end (delta: -2.7 GB). Peak memory consumption was 259.9 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 analyzing trace of length 973 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 209.4s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 159.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5734 SDtfs, 34502 SDslu, 2135 SDs, 0 SdLazy, 69116 SolverSat, 17075 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 114.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9890 GetRequests, 9758 SyntacticMatches, 31 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169964occurred in iteration=13, 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: 25.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 15586 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 9016 NumberOfCodeBlocks, 9016 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 13864 ConstructedInterpolants, 0 QuantifiedInterpolants, 14639531 SizeOfPredicates, 7 NumberOfNonLiveVariables, 7516 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 33 InterpolantComputations, 12 PerfectInterpolantSequences, 11058/11781 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/Problem12_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-23-47-608.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-23-47-608.csv Completed graceful shutdown