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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:06:30,132 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:06:30,135 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:06:30,147 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:06:30,148 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:06:30,149 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:06:30,150 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:06:30,152 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:06:30,153 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:06:30,154 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:06:30,155 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:06:30,156 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:06:30,156 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:06:30,157 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:06:30,159 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:06:30,159 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:06:30,160 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:06:30,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:06:30,167 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:06:30,171 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:06:30,173 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:06:30,174 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:06:30,176 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:06:30,176 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:06:30,176 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:06:30,177 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:06:30,181 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:06:30,182 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:06:30,183 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:06:30,186 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:06:30,186 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:06:30,187 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:06:30,187 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:06:30,187 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:06:30,189 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:06:30,190 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:06:30,190 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:06:30,215 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:06:30,216 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:06:30,218 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:06:30,218 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:06:30,218 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:06:30,219 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:06:30,219 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:06:30,219 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:06:30,219 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:06:30,219 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:06:30,219 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:06:30,220 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:06:30,220 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:06:30,220 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:06:30,221 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:06:30,221 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:06:30,221 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:06:30,222 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:06:30,222 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:06:30,222 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:06:30,222 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:06:30,222 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:06:30,224 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:06:30,224 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:06:30,224 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:06:30,225 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:06:30,225 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:06:30,225 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:06:30,225 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:06:30,225 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:06:30,226 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:06:30,226 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:06:30,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:06:30,226 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:06:30,226 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:06:30,227 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:06:30,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:06:30,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:06:30,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:06:30,305 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:06:30,305 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:06:30,306 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c [2018-11-07 09:06:30,380 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b7334c9/c7af888c66c14964941e25d30cf288ad/FLAG777a2999d [2018-11-07 09:06:31,027 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:06:31,028 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c [2018-11-07 09:06:31,051 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b7334c9/c7af888c66c14964941e25d30cf288ad/FLAG777a2999d [2018-11-07 09:06:31,071 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b7334c9/c7af888c66c14964941e25d30cf288ad [2018-11-07 09:06:31,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:06:31,085 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:06:31,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:06:31,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:06:31,090 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:06:31,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:06:31" (1/1) ... [2018-11-07 09:06:31,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9260898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:31, skipping insertion in model container [2018-11-07 09:06:31,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:06:31" (1/1) ... [2018-11-07 09:06:31,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:06:31,214 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:06:32,126 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:06:32,132 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:06:32,494 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:06:32,516 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:06:32,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32 WrapperNode [2018-11-07 09:06:32,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:06:32,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:06:32,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:06:32,518 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:06:32,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (1/1) ... [2018-11-07 09:06:32,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (1/1) ... [2018-11-07 09:06:32,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:06:32,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:06:32,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:06:32,753 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:06:32,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (1/1) ... [2018-11-07 09:06:32,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (1/1) ... [2018-11-07 09:06:32,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (1/1) ... [2018-11-07 09:06:32,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (1/1) ... [2018-11-07 09:06:32,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (1/1) ... [2018-11-07 09:06:32,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (1/1) ... [2018-11-07 09:06:32,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (1/1) ... [2018-11-07 09:06:32,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:06:32,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:06:32,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:06:32,897 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:06:32,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (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 [2018-11-07 09:06:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:06:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:06:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:06:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:06:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:06:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:06:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:06:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:06:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:06:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:06:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:06:39,423 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:06:39,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:06:39 BoogieIcfgContainer [2018-11-07 09:06:39,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:06:39,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:06:39,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:06:39,428 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:06:39,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:06:31" (1/3) ... [2018-11-07 09:06:39,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca4856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:06:39, skipping insertion in model container [2018-11-07 09:06:39,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:32" (2/3) ... [2018-11-07 09:06:39,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca4856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:06:39, skipping insertion in model container [2018-11-07 09:06:39,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:06:39" (3/3) ... [2018-11-07 09:06:39,432 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label21_true-unreach-call.c [2018-11-07 09:06:39,442 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:06:39,453 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:06:39,469 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:06:39,510 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:06:39,510 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:06:39,510 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:06:39,510 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:06:39,510 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:06:39,511 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:06:39,511 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:06:39,511 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:06:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 09:06:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 09:06:39,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:39,555 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:06:39,557 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:39,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:39,564 INFO L82 PathProgramCache]: Analyzing trace with hash -191617687, now seen corresponding path program 1 times [2018-11-07 09:06:39,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:39,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:39,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:39,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:39,619 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:06:40,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:06:40,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:06:40,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:40,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:06:40,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:06:40,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:06:40,182 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 09:06:47,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:47,487 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 09:06:47,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:06:47,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-11-07 09:06:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:47,534 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 09:06:47,534 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 09:06:47,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:06:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 09:06:47,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 09:06:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 09:06:47,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 09:06:47,670 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 67 [2018-11-07 09:06:47,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:47,670 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 09:06:47,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:06:47,671 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 09:06:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 09:06:47,679 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:47,679 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:06:47,679 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:47,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:47,680 INFO L82 PathProgramCache]: Analyzing trace with hash 2147224692, now seen corresponding path program 1 times [2018-11-07 09:06:47,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:47,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:47,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:47,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:47,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:06:48,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:06:48,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:06:48,087 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:48,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:06:48,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:06:48,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:06:48,090 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 09:06:53,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:53,688 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 09:06:53,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:06:53,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-11-07 09:06:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:53,701 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 09:06:53,702 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 09:06:53,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:06:53,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 09:06:53,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 09:06:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 09:06:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 09:06:53,766 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 140 [2018-11-07 09:06:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:53,767 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 09:06:53,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:06:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 09:06:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-07 09:06:53,771 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:53,771 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:06:53,772 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:53,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:53,772 INFO L82 PathProgramCache]: Analyzing trace with hash 245901444, now seen corresponding path program 1 times [2018-11-07 09:06:53,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:53,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:53,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:53,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:53,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:06:54,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:06:54,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:06:54,077 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:54,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:06:54,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:06:54,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:06:54,081 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-07 09:06:59,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:59,779 INFO L93 Difference]: Finished difference Result 5392 states and 8276 transitions. [2018-11-07 09:06:59,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:06:59,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2018-11-07 09:06:59,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:59,810 INFO L225 Difference]: With dead ends: 5392 [2018-11-07 09:06:59,810 INFO L226 Difference]: Without dead ends: 3941 [2018-11-07 09:06:59,825 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 [2018-11-07 09:06:59,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2018-11-07 09:06:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3939. [2018-11-07 09:06:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-11-07 09:06:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5428 transitions. [2018-11-07 09:06:59,937 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5428 transitions. Word has length 148 [2018-11-07 09:06:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:59,937 INFO L480 AbstractCegarLoop]: Abstraction has 3939 states and 5428 transitions. [2018-11-07 09:06:59,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:06:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5428 transitions. [2018-11-07 09:06:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 09:06:59,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:59,949 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:06:59,949 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:59,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:59,950 INFO L82 PathProgramCache]: Analyzing trace with hash -724599134, now seen corresponding path program 1 times [2018-11-07 09:06:59,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:59,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:59,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:59,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:59,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 120 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:07:00,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:00,286 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:00,287 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-07 09:07:00,289 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:00,338 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:00,339 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:00,757 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:07:00,760 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:07:00,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:00,774 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:07:01,354 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 78.36% of their original sizes. [2018-11-07 09:07:01,354 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:07:01,569 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-11-07 09:07:01,569 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:07:01,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:07:01,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:07:01,571 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:01,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:07:01,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:07:01,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:07:01,572 INFO L87 Difference]: Start difference. First operand 3939 states and 5428 transitions. Second operand 6 states. [2018-11-07 09:07:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:46,745 INFO L93 Difference]: Finished difference Result 8182 states and 11238 transitions. [2018-11-07 09:07:46,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:07:46,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-11-07 09:07:46,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:46,766 INFO L225 Difference]: With dead ends: 8182 [2018-11-07 09:07:46,766 INFO L226 Difference]: Without dead ends: 4249 [2018-11-07 09:07:46,784 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 224 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:07:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2018-11-07 09:07:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4247. [2018-11-07 09:07:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4247 states. [2018-11-07 09:07:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5745 transitions. [2018-11-07 09:07:46,882 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5745 transitions. Word has length 224 [2018-11-07 09:07:46,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:46,883 INFO L480 AbstractCegarLoop]: Abstraction has 4247 states and 5745 transitions. [2018-11-07 09:07:46,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:07:46,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5745 transitions. [2018-11-07 09:07:46,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-07 09:07:46,894 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:46,894 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:07:46,895 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:46,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:46,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1857521012, now seen corresponding path program 1 times [2018-11-07 09:07:46,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:46,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:46,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:46,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:46,897 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 186 proven. 201 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-07 09:07:47,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:47,289 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:47,289 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 321 with the following transitions: [2018-11-07 09:07:47,290 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:47,295 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:47,295 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:47,481 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:07:47,482 INFO L272 AbstractInterpreter]: Visited 106 different actions 304 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:07:47,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:47,522 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:07:47,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:47,522 INFO L194 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 [2018-11-07 09:07:47,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:47,541 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:07:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:47,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:07:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-07 09:07:47,982 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:07:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 268 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-07 09:07:48,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:07:48,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:07:48,858 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:07:48,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:07:48,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:07:48,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:07:48,859 INFO L87 Difference]: Start difference. First operand 4247 states and 5745 transitions. Second operand 9 states. [2018-11-07 09:07:57,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:57,693 INFO L93 Difference]: Finished difference Result 10673 states and 14460 transitions. [2018-11-07 09:07:57,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 09:07:57,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 320 [2018-11-07 09:07:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:57,727 INFO L225 Difference]: With dead ends: 10673 [2018-11-07 09:07:57,727 INFO L226 Difference]: Without dead ends: 6740 [2018-11-07 09:07:57,753 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 648 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2018-11-07 09:07:57,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2018-11-07 09:07:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 6619. [2018-11-07 09:07:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6619 states. [2018-11-07 09:07:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6619 states to 6619 states and 7780 transitions. [2018-11-07 09:07:57,908 INFO L78 Accepts]: Start accepts. Automaton has 6619 states and 7780 transitions. Word has length 320 [2018-11-07 09:07:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:57,909 INFO L480 AbstractCegarLoop]: Abstraction has 6619 states and 7780 transitions. [2018-11-07 09:07:57,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:07:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 6619 states and 7780 transitions. [2018-11-07 09:07:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 09:07:57,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:57,920 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:07:57,921 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:57,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:57,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1716200344, now seen corresponding path program 1 times [2018-11-07 09:07:57,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:57,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:57,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:57,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:57,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:58,711 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-11-07 09:07:59,121 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-11-07 09:07:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:07:59,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:59,359 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:59,360 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 09:07:59,361 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:59,378 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:59,378 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:00,614 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:08:00,615 INFO L272 AbstractInterpreter]: Visited 296 different actions 885 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:08:00,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:00,624 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:08:00,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:00,624 INFO L194 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 [2018-11-07 09:08:00,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:00,634 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:08:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:00,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:08:26,095 WARN L179 SmtUtils]: Spent 25.02 s on a formula simplification. DAG size of input: 472 DAG size of output: 156 [2018-11-07 09:08:30,525 WARN L179 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 163 DAG size of output: 57 [2018-11-07 09:08:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 9 proven. 114 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:08:31,573 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:08:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:08:31,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:08:31,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-07 09:08:31,928 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:08:31,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:08:31,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:08:31,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-07 09:08:31,929 INFO L87 Difference]: Start difference. First operand 6619 states and 7780 transitions. Second operand 3 states. [2018-11-07 09:08:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:34,158 INFO L93 Difference]: Finished difference Result 18798 states and 22584 transitions. [2018-11-07 09:08:34,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:08:34,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 424 [2018-11-07 09:08:34,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:34,194 INFO L225 Difference]: With dead ends: 18798 [2018-11-07 09:08:34,194 INFO L226 Difference]: Without dead ends: 9520 [2018-11-07 09:08:34,232 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 845 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-07 09:08:34,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9520 states. [2018-11-07 09:08:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9520 to 9388. [2018-11-07 09:08:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9388 states. [2018-11-07 09:08:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9388 states to 9388 states and 10607 transitions. [2018-11-07 09:08:34,406 INFO L78 Accepts]: Start accepts. Automaton has 9388 states and 10607 transitions. Word has length 424 [2018-11-07 09:08:34,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:34,407 INFO L480 AbstractCegarLoop]: Abstraction has 9388 states and 10607 transitions. [2018-11-07 09:08:34,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:08:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 9388 states and 10607 transitions. [2018-11-07 09:08:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-11-07 09:08:34,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:34,428 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 09:08:34,428 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:34,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:34,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1665276040, now seen corresponding path program 1 times [2018-11-07 09:08:34,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:34,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:34,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:34,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:34,430 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:35,238 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 09:08:35,459 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 09:08:35,859 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-11-07 09:08:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 188 proven. 226 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:08:36,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:36,743 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:08:36,744 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 503 with the following transitions: [2018-11-07 09:08:36,744 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [609], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:08:36,749 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:08:36,750 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:41,107 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:08:41,107 INFO L272 AbstractInterpreter]: Visited 285 different actions 1131 times. Merged at 8 different actions 26 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:08:41,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:41,143 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:08:41,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:41,143 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:08:41,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:41,156 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:08:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:41,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:08:41,502 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-07 09:08:41,503 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:08:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 264 proven. 78 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-07 09:08:41,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:08:41,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 09:08:41,932 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:08:41,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:08:41,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:08:41,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:08:41,935 INFO L87 Difference]: Start difference. First operand 9388 states and 10607 transitions. Second operand 17 states. [2018-11-07 09:08:49,326 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-11-07 09:08:50,434 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2018-11-07 09:09:04,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:04,014 INFO L93 Difference]: Finished difference Result 28462 states and 33428 transitions. [2018-11-07 09:09:04,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-11-07 09:09:04,015 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 502 [2018-11-07 09:09:04,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:04,091 INFO L225 Difference]: With dead ends: 28462 [2018-11-07 09:09:04,092 INFO L226 Difference]: Without dead ends: 19388 [2018-11-07 09:09:04,122 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1055 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1981 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1218, Invalid=4788, Unknown=0, NotChecked=0, Total=6006 [2018-11-07 09:09:04,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19388 states. [2018-11-07 09:09:04,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19388 to 17996. [2018-11-07 09:09:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17996 states. [2018-11-07 09:09:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17996 states to 17996 states and 20347 transitions. [2018-11-07 09:09:04,457 INFO L78 Accepts]: Start accepts. Automaton has 17996 states and 20347 transitions. Word has length 502 [2018-11-07 09:09:04,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:04,458 INFO L480 AbstractCegarLoop]: Abstraction has 17996 states and 20347 transitions. [2018-11-07 09:09:04,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 09:09:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 17996 states and 20347 transitions. [2018-11-07 09:09:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-11-07 09:09:04,497 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:04,498 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:09:04,498 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:04,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:04,498 INFO L82 PathProgramCache]: Analyzing trace with hash -375270809, now seen corresponding path program 1 times [2018-11-07 09:09:04,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:04,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:04,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:04,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:04,501 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-11-07 09:09:05,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:09:05,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:09:05,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:09:05,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:09:05,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:09:05,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:09:05,263 INFO L87 Difference]: Start difference. First operand 17996 states and 20347 transitions. Second operand 3 states. [2018-11-07 09:09:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:07,411 INFO L93 Difference]: Finished difference Result 40035 states and 46319 transitions. [2018-11-07 09:09:07,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:09:07,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 581 [2018-11-07 09:09:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:07,489 INFO L225 Difference]: With dead ends: 40035 [2018-11-07 09:09:07,489 INFO L226 Difference]: Without dead ends: 22665 [2018-11-07 09:09:07,529 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:09:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22665 states. [2018-11-07 09:09:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22665 to 22657. [2018-11-07 09:09:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22657 states. [2018-11-07 09:09:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22657 states to 22657 states and 25885 transitions. [2018-11-07 09:09:07,889 INFO L78 Accepts]: Start accepts. Automaton has 22657 states and 25885 transitions. Word has length 581 [2018-11-07 09:09:07,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:07,891 INFO L480 AbstractCegarLoop]: Abstraction has 22657 states and 25885 transitions. [2018-11-07 09:09:07,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:09:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 22657 states and 25885 transitions. [2018-11-07 09:09:07,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2018-11-07 09:09:07,934 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:07,935 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:07,935 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:07,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:07,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1373425467, now seen corresponding path program 1 times [2018-11-07 09:09:07,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:07,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:07,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:07,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:07,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:09,479 WARN L179 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 12 [2018-11-07 09:09:10,082 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 09:09:10,340 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 09:09:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 402 proven. 214 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-07 09:09:10,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:10,792 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:10,792 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 616 with the following transitions: [2018-11-07 09:09:10,793 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [585], [586], [590], [594], [597], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:10,798 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:10,798 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:15,732 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:15,732 INFO L272 AbstractInterpreter]: Visited 298 different actions 891 times. Merged at 9 different actions 21 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:09:15,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:15,741 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:15,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:15,741 INFO L194 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 [2018-11-07 09:09:15,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:15,750 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:15,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 551 proven. 2 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-11-07 09:09:16,378 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 403 proven. 72 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-07 09:09:17,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:09:17,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2018-11-07 09:09:17,034 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:09:17,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 09:09:17,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 09:09:17,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:09:17,036 INFO L87 Difference]: Start difference. First operand 22657 states and 25885 transitions. Second operand 12 states. [2018-11-07 09:09:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:28,772 INFO L93 Difference]: Finished difference Result 53421 states and 63756 transitions. [2018-11-07 09:09:28,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-07 09:09:28,772 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 615 [2018-11-07 09:09:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:28,855 INFO L225 Difference]: With dead ends: 53421 [2018-11-07 09:09:28,856 INFO L226 Difference]: Without dead ends: 31390 [2018-11-07 09:09:28,907 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1297 GetRequests, 1252 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2018-11-07 09:09:28,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31390 states. [2018-11-07 09:09:29,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31390 to 28953. [2018-11-07 09:09:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28953 states. [2018-11-07 09:09:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28953 states to 28953 states and 32885 transitions. [2018-11-07 09:09:29,347 INFO L78 Accepts]: Start accepts. Automaton has 28953 states and 32885 transitions. Word has length 615 [2018-11-07 09:09:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:29,348 INFO L480 AbstractCegarLoop]: Abstraction has 28953 states and 32885 transitions. [2018-11-07 09:09:29,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 09:09:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 28953 states and 32885 transitions. [2018-11-07 09:09:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2018-11-07 09:09:29,438 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:29,439 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:29,439 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:29,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:29,440 INFO L82 PathProgramCache]: Analyzing trace with hash -142154618, now seen corresponding path program 1 times [2018-11-07 09:09:29,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:29,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:29,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:29,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:29,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2018-11-07 09:09:30,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:30,301 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:30,301 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 878 with the following transitions: [2018-11-07 09:09:30,301 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1183], [1188], [1190], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1248], [1251], [1255], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:30,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:30,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:35,464 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:35,465 INFO L272 AbstractInterpreter]: Visited 302 different actions 897 times. Merged at 9 different actions 23 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:09:35,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:35,471 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:35,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:35,471 INFO L194 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 [2018-11-07 09:09:35,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:35,481 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:35,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 691 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-07 09:09:36,117 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2018-11-07 09:09:36,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:09:36,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-11-07 09:09:36,764 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:09:36,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:09:36,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:09:36,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:09:36,765 INFO L87 Difference]: Start difference. First operand 28953 states and 32885 transitions. Second operand 3 states. [2018-11-07 09:09:39,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:39,312 INFO L93 Difference]: Finished difference Result 72670 states and 84595 transitions. [2018-11-07 09:09:39,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:09:39,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 877 [2018-11-07 09:09:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:39,415 INFO L225 Difference]: With dead ends: 72670 [2018-11-07 09:09:39,415 INFO L226 Difference]: Without dead ends: 36760 [2018-11-07 09:09:39,486 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1756 GetRequests, 1755 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:09:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36760 states. [2018-11-07 09:09:39,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36760 to 35730. [2018-11-07 09:09:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35730 states. [2018-11-07 09:09:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35730 states to 35730 states and 40335 transitions. [2018-11-07 09:09:40,012 INFO L78 Accepts]: Start accepts. Automaton has 35730 states and 40335 transitions. Word has length 877 [2018-11-07 09:09:40,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:40,013 INFO L480 AbstractCegarLoop]: Abstraction has 35730 states and 40335 transitions. [2018-11-07 09:09:40,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:09:40,013 INFO L276 IsEmpty]: Start isEmpty. Operand 35730 states and 40335 transitions. [2018-11-07 09:09:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2018-11-07 09:09:40,079 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:40,079 INFO L375 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:40,080 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:40,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:40,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1201461865, now seen corresponding path program 1 times [2018-11-07 09:09:40,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:40,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:40,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:40,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:40,082 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 943 proven. 2 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2018-11-07 09:09:41,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:41,109 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:41,110 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 993 with the following transitions: [2018-11-07 09:09:41,110 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1005], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1183], [1188], [1190], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:41,114 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:41,115 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:46,104 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:46,104 INFO L272 AbstractInterpreter]: Visited 301 different actions 898 times. Merged at 10 different actions 23 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:09:46,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:46,114 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:46,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:46,114 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:09:46,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:46,123 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:46,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 943 proven. 2 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2018-11-07 09:09:46,963 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 943 proven. 2 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2018-11-07 09:09:47,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:09:47,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:09:47,969 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:09:47,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:09:47,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:09:47,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:09:47,973 INFO L87 Difference]: Start difference. First operand 35730 states and 40335 transitions. Second operand 9 states. [2018-11-07 09:09:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:54,903 INFO L93 Difference]: Finished difference Result 79503 states and 91596 transitions. [2018-11-07 09:09:54,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 09:09:54,903 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 992 [2018-11-07 09:09:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:54,959 INFO L225 Difference]: With dead ends: 79503 [2018-11-07 09:09:54,960 INFO L226 Difference]: Without dead ends: 29742 [2018-11-07 09:09:55,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2017 GetRequests, 1992 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2018-11-07 09:09:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29742 states. [2018-11-07 09:09:55,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29742 to 26746. [2018-11-07 09:09:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26746 states. [2018-11-07 09:09:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26746 states to 26746 states and 28605 transitions. [2018-11-07 09:09:55,438 INFO L78 Accepts]: Start accepts. Automaton has 26746 states and 28605 transitions. Word has length 992 [2018-11-07 09:09:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:55,439 INFO L480 AbstractCegarLoop]: Abstraction has 26746 states and 28605 transitions. [2018-11-07 09:09:55,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:09:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26746 states and 28605 transitions. [2018-11-07 09:09:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2018-11-07 09:09:55,461 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:55,462 INFO L375 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:55,462 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:55,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:55,463 INFO L82 PathProgramCache]: Analyzing trace with hash -2041280469, now seen corresponding path program 1 times [2018-11-07 09:09:55,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:55,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:55,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:55,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:55,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1854 backedges. 635 proven. 875 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2018-11-07 09:09:58,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:58,670 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:58,671 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1035 with the following transitions: [2018-11-07 09:09:58,671 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1183], [1188], [1190], [1191], [1202], [1206], [1209], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1378], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1432], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:58,675 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:58,675 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:59,897 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:59,897 INFO L272 AbstractInterpreter]: Visited 262 different actions 1042 times. Merged at 10 different actions 34 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 09:09:59,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:59,903 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:59,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:59,903 INFO L194 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 [2018-11-07 09:09:59,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:59,913 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:10:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:00,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:10:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1854 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2018-11-07 09:10:01,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:10:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1854 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2018-11-07 09:10:02,130 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:10:02,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [15] total 19 [2018-11-07 09:10:02,131 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:10:02,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:10:02,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:10:02,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:10:02,133 INFO L87 Difference]: Start difference. First operand 26746 states and 28605 transitions. Second operand 4 states. [2018-11-07 09:10:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:10:06,032 INFO L93 Difference]: Finished difference Result 59407 states and 63710 transitions. [2018-11-07 09:10:06,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:10:06,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1034 [2018-11-07 09:10:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:10:06,034 INFO L225 Difference]: With dead ends: 59407 [2018-11-07 09:10:06,034 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 09:10:06,079 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2086 GetRequests, 2066 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:10:06,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 09:10:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 09:10:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 09:10:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 09:10:06,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1034 [2018-11-07 09:10:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:10:06,081 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 09:10:06,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:10:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 09:10:06,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 09:10:06,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 09:10:06,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,155 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,165 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,166 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,178 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,212 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,346 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,498 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,604 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,672 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,695 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,741 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:10:06,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-11-07 09:10:06,894 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-11-07 09:10:06,895 INFO L168 Benchmark]: Toolchain (without parser) took 215811.61 ms. Allocated memory was 1.6 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 09:10:06,897 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:10:06,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1430.52 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:10:06,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 235.40 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -900.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:10:06,899 INFO L168 Benchmark]: Boogie Preprocessor took 142.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:10:06,899 INFO L168 Benchmark]: RCFGBuilder took 6527.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 305.2 MB). Peak memory consumption was 305.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:10:06,901 INFO L168 Benchmark]: TraceAbstraction took 207469.78 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 749.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:10:06,907 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1430.52 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 235.40 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -900.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6527.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 305.2 MB). Peak memory consumption was 305.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207469.78 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 749.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 1. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown