java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label40_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:29:07,134 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:29:07,136 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:29:07,151 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:29:07,151 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:29:07,153 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:29:07,154 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:29:07,156 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:29:07,157 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:29:07,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:29:07,159 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:29:07,160 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:29:07,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:29:07,162 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:29:07,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:29:07,164 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:29:07,165 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:29:07,167 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:29:07,169 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:29:07,171 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:29:07,172 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:29:07,173 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:29:07,176 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:29:07,176 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:29:07,176 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:29:07,179 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:29:07,180 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:29:07,181 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:29:07,185 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:29:07,186 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:29:07,186 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:29:07,187 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:29:07,187 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:29:07,188 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:29:07,188 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:29:07,190 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:29:07,190 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:29:07,210 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:29:07,211 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:29:07,212 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:29:07,215 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:29:07,215 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:29:07,215 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:29:07,215 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:29:07,215 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:29:07,216 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:29:07,216 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:29:07,216 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:29:07,216 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:29:07,216 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:29:07,217 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:29:07,218 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:29:07,218 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:29:07,218 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:29:07,218 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:29:07,218 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:29:07,219 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:29:07,219 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:29:07,219 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:29:07,219 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:29:07,219 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:29:07,220 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:29:07,220 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:29:07,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:29:07,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:29:07,220 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:29:07,221 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:29:07,221 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:29:07,221 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:29:07,221 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:29:07,221 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:29:07,222 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:29:07,222 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:29:07,295 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:29:07,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:29:07,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:29:07,315 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:29:07,316 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:29:07,317 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label40_false-unreach-call_false-termination.c [2018-10-27 05:29:07,380 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/01e44e85a/b9aca87c5a044e0387e8bf60632a2692/FLAG30406408b [2018-10-27 05:29:08,000 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:29:08,001 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label40_false-unreach-call_false-termination.c [2018-10-27 05:29:08,019 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/01e44e85a/b9aca87c5a044e0387e8bf60632a2692/FLAG30406408b [2018-10-27 05:29:08,038 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/01e44e85a/b9aca87c5a044e0387e8bf60632a2692 [2018-10-27 05:29:08,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:29:08,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:29:08,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:29:08,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:29:08,063 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:29:08,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:08,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dcfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08, skipping insertion in model container [2018-10-27 05:29:08,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:08,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:29:08,141 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:29:08,638 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:29:08,643 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:29:08,818 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:29:08,837 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:29:08,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08 WrapperNode [2018-10-27 05:29:08,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:29:08,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:29:08,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:29:08,839 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:29:08,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:08,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:09,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:29:09,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:29:09,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:29:09,113 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:29:09,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:09,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:09,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:09,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:09,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:09,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:09,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... [2018-10-27 05:29:09,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:29:09,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:29:09,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:29:09,258 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:29:09,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:29:09,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:29:09,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:29:09,337 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:29:09,337 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:29:09,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:29:09,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:29:09,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:29:09,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:29:13,080 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:29:13,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:29:13 BoogieIcfgContainer [2018-10-27 05:29:13,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:29:13,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:29:13,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:29:13,088 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:29:13,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:29:08" (1/3) ... [2018-10-27 05:29:13,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e7bc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:29:13, skipping insertion in model container [2018-10-27 05:29:13,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:08" (2/3) ... [2018-10-27 05:29:13,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e7bc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:29:13, skipping insertion in model container [2018-10-27 05:29:13,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:29:13" (3/3) ... [2018-10-27 05:29:13,093 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label40_false-unreach-call_false-termination.c [2018-10-27 05:29:13,103 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:29:13,114 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:29:13,134 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:29:13,187 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:29:13,187 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:29:13,187 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:29:13,187 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:29:13,187 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:29:13,188 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:29:13,188 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:29:13,188 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:29:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 05:29:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-27 05:29:13,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:13,228 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] [2018-10-27 05:29:13,231 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:13,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash -35569548, now seen corresponding path program 1 times [2018-10-27 05:29:13,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:13,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:13,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:13,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:13,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:29:13,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:29:13,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:29:13,805 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:13,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:29:13,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:29:13,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:29:13,831 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-27 05:29:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:16,576 INFO L93 Difference]: Finished difference Result 878 states and 1595 transitions. [2018-10-27 05:29:16,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:29:16,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-27 05:29:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:16,601 INFO L225 Difference]: With dead ends: 878 [2018-10-27 05:29:16,602 INFO L226 Difference]: Without dead ends: 617 [2018-10-27 05:29:16,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:29:16,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2018-10-27 05:29:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2018-10-27 05:29:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2018-10-27 05:29:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1129 transitions. [2018-10-27 05:29:16,724 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1129 transitions. Word has length 26 [2018-10-27 05:29:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:16,725 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 1129 transitions. [2018-10-27 05:29:16,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:29:16,725 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1129 transitions. [2018-10-27 05:29:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-27 05:29:16,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:16,737 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:29:16,737 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:16,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:16,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1735670092, now seen corresponding path program 1 times [2018-10-27 05:29:16,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:16,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:16,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:16,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:16,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:17,207 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 05:29:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:29:17,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:29:17,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:29:17,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:17,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:29:17,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:29:17,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:29:17,283 INFO L87 Difference]: Start difference. First operand 617 states and 1129 transitions. Second operand 6 states. [2018-10-27 05:29:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:19,890 INFO L93 Difference]: Finished difference Result 1620 states and 3026 transitions. [2018-10-27 05:29:19,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:29:19,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-27 05:29:19,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:19,900 INFO L225 Difference]: With dead ends: 1620 [2018-10-27 05:29:19,901 INFO L226 Difference]: Without dead ends: 1009 [2018-10-27 05:29:19,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:29:19,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2018-10-27 05:29:19,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 997. [2018-10-27 05:29:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2018-10-27 05:29:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1718 transitions. [2018-10-27 05:29:19,976 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1718 transitions. Word has length 146 [2018-10-27 05:29:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:19,977 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1718 transitions. [2018-10-27 05:29:19,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:29:19,977 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1718 transitions. [2018-10-27 05:29:19,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-27 05:29:19,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:19,994 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:29:19,995 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:19,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:19,995 INFO L82 PathProgramCache]: Analyzing trace with hash -70137397, now seen corresponding path program 1 times [2018-10-27 05:29:19,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:19,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:19,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:19,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:19,997 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 38 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:29:20,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:20,523 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:20,524 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-10-27 05:29:20,526 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:20,576 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:20,577 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:24,017 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:29:24,019 INFO L272 AbstractInterpreter]: Visited 125 different actions 125 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:29:24,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:24,050 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:29:27,876 INFO L227 lantSequenceWeakener]: Weakened 250 states. On average, predicates are now at 77.45% of their original sizes. [2018-10-27 05:29:27,877 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:29:28,132 INFO L415 sIntCurrentIteration]: We unified 258 AI predicates to 258 [2018-10-27 05:29:28,132 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:29:28,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:29:28,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 05:29:28,133 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:28,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:29:28,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:29:28,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:29:28,135 INFO L87 Difference]: Start difference. First operand 997 states and 1718 transitions. Second operand 6 states. [2018-10-27 05:29:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:51,135 INFO L93 Difference]: Finished difference Result 2173 states and 3739 transitions. [2018-10-27 05:29:51,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:29:51,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 259 [2018-10-27 05:29:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:51,144 INFO L225 Difference]: With dead ends: 2173 [2018-10-27 05:29:51,144 INFO L226 Difference]: Without dead ends: 1182 [2018-10-27 05:29:51,148 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 259 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:29:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-10-27 05:29:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1180. [2018-10-27 05:29:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2018-10-27 05:29:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1908 transitions. [2018-10-27 05:29:51,185 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1908 transitions. Word has length 259 [2018-10-27 05:29:51,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:51,185 INFO L481 AbstractCegarLoop]: Abstraction has 1180 states and 1908 transitions. [2018-10-27 05:29:51,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:29:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1908 transitions. [2018-10-27 05:29:51,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-10-27 05:29:51,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:51,194 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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] [2018-10-27 05:29:51,194 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:51,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:51,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1485361180, now seen corresponding path program 1 times [2018-10-27 05:29:51,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:51,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:51,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:51,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:51,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 145 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:29:51,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:51,996 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:51,997 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 345 with the following transitions: [2018-10-27 05:29:51,997 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:52,003 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:52,003 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:55,818 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:29:55,819 INFO L272 AbstractInterpreter]: Visited 130 different actions 252 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:29:55,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:55,828 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:29:55,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:55,828 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:29:55,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:55,838 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:29:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:55,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:29:56,327 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:29:56,717 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:29:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 267 proven. 53 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 05:29:56,954 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:29:57,245 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-10-27 05:29:57,753 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-27 05:29:57,953 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 05:29:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 67 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:29:58,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:29:58,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-10-27 05:29:58,715 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:29:58,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 05:29:58,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 05:29:58,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:29:58,717 INFO L87 Difference]: Start difference. First operand 1180 states and 1908 transitions. Second operand 15 states. [2018-10-27 05:30:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:05,385 INFO L93 Difference]: Finished difference Result 3005 states and 5050 transitions. [2018-10-27 05:30:05,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-27 05:30:05,388 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 344 [2018-10-27 05:30:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:05,400 INFO L225 Difference]: With dead ends: 3005 [2018-10-27 05:30:05,400 INFO L226 Difference]: Without dead ends: 1815 [2018-10-27 05:30:05,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 696 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2018-10-27 05:30:05,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2018-10-27 05:30:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1579. [2018-10-27 05:30:05,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2018-10-27 05:30:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2214 transitions. [2018-10-27 05:30:05,463 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2214 transitions. Word has length 344 [2018-10-27 05:30:05,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:05,463 INFO L481 AbstractCegarLoop]: Abstraction has 1579 states and 2214 transitions. [2018-10-27 05:30:05,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 05:30:05,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2214 transitions. [2018-10-27 05:30:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-27 05:30:05,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:05,474 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 05:30:05,474 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:05,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:05,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1777454544, now seen corresponding path program 1 times [2018-10-27 05:30:05,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:05,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:05,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:05,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:05,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 70 proven. 317 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:30:06,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:06,614 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:06,615 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 371 with the following transitions: [2018-10-27 05:30:06,615 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:06,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:06,621 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:10,998 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:30:10,998 INFO L272 AbstractInterpreter]: Visited 129 different actions 252 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:30:11,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:11,024 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:30:13,173 INFO L227 lantSequenceWeakener]: Weakened 367 states. On average, predicates are now at 77.46% of their original sizes. [2018-10-27 05:30:13,173 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:30:13,471 INFO L415 sIntCurrentIteration]: We unified 369 AI predicates to 369 [2018-10-27 05:30:13,471 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:30:13,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:30:13,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2018-10-27 05:30:13,471 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:13,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:30:13,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:30:13,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:30:13,473 INFO L87 Difference]: Start difference. First operand 1579 states and 2214 transitions. Second operand 10 states. [2018-10-27 05:30:31,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:31,792 INFO L93 Difference]: Finished difference Result 3157 states and 4454 transitions. [2018-10-27 05:30:31,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:30:31,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 370 [2018-10-27 05:30:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:31,801 INFO L225 Difference]: With dead ends: 3157 [2018-10-27 05:30:31,801 INFO L226 Difference]: Without dead ends: 1767 [2018-10-27 05:30:31,808 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 377 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:30:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2018-10-27 05:30:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1762. [2018-10-27 05:30:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2018-10-27 05:30:31,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2400 transitions. [2018-10-27 05:30:31,853 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2400 transitions. Word has length 370 [2018-10-27 05:30:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:31,854 INFO L481 AbstractCegarLoop]: Abstraction has 1762 states and 2400 transitions. [2018-10-27 05:30:31,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:30:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2400 transitions. [2018-10-27 05:30:31,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-10-27 05:30:31,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:31,868 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:31,868 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:31,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:31,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1912658812, now seen corresponding path program 1 times [2018-10-27 05:30:31,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:31,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:31,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:31,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:31,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 308 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-27 05:30:32,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:32,470 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:32,471 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 481 with the following transitions: [2018-10-27 05:30:32,471 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:32,474 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:32,475 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:41,324 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:30:41,325 INFO L272 AbstractInterpreter]: Visited 130 different actions 389 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 05:30:41,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:41,340 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:30:42,704 INFO L227 lantSequenceWeakener]: Weakened 477 states. On average, predicates are now at 80.12% of their original sizes. [2018-10-27 05:30:42,704 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:30:42,796 INFO L415 sIntCurrentIteration]: We unified 479 AI predicates to 479 [2018-10-27 05:30:42,796 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:30:42,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:30:42,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 05:30:42,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:42,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:30:42,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:30:42,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:30:42,798 INFO L87 Difference]: Start difference. First operand 1762 states and 2400 transitions. Second operand 9 states. [2018-10-27 05:31:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:11,750 INFO L93 Difference]: Finished difference Result 4021 states and 5667 transitions. [2018-10-27 05:31:11,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 05:31:11,751 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 480 [2018-10-27 05:31:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:11,762 INFO L225 Difference]: With dead ends: 4021 [2018-10-27 05:31:11,763 INFO L226 Difference]: Without dead ends: 2633 [2018-10-27 05:31:11,771 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 486 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 05:31:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2018-10-27 05:31:11,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2418. [2018-10-27 05:31:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2418 states. [2018-10-27 05:31:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3136 transitions. [2018-10-27 05:31:11,841 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3136 transitions. Word has length 480 [2018-10-27 05:31:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:11,842 INFO L481 AbstractCegarLoop]: Abstraction has 2418 states and 3136 transitions. [2018-10-27 05:31:11,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:31:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3136 transitions. [2018-10-27 05:31:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2018-10-27 05:31:11,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:11,858 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:11,858 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:11,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:11,858 INFO L82 PathProgramCache]: Analyzing trace with hash -38351765, now seen corresponding path program 1 times [2018-10-27 05:31:11,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:11,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:11,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:11,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:11,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 310 proven. 329 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 05:31:13,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:13,434 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:13,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 548 with the following transitions: [2018-10-27 05:31:13,434 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:13,438 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:13,438 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:18,812 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:31:18,812 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:31:18,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:18,821 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:31:18,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:18,821 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:31:18,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:18,829 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:18,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 619 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-27 05:31:19,329 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 308 proven. 119 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-27 05:31:19,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:19,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-10-27 05:31:19,940 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:19,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:31:19,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:31:19,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:31:19,943 INFO L87 Difference]: Start difference. First operand 2418 states and 3136 transitions. Second operand 17 states. [2018-10-27 05:31:22,292 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-27 05:31:24,193 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-27 05:31:24,988 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-27 05:31:27,092 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-27 05:31:30,170 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2018-10-27 05:31:30,776 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-27 05:31:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:31,813 INFO L93 Difference]: Finished difference Result 6873 states and 9475 transitions. [2018-10-27 05:31:31,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-27 05:31:31,814 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 547 [2018-10-27 05:31:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:31,838 INFO L225 Difference]: With dead ends: 6873 [2018-10-27 05:31:31,838 INFO L226 Difference]: Without dead ends: 4829 [2018-10-27 05:31:31,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1127 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-10-27 05:31:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2018-10-27 05:31:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 4425. [2018-10-27 05:31:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4425 states. [2018-10-27 05:31:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 5407 transitions. [2018-10-27 05:31:31,978 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 5407 transitions. Word has length 547 [2018-10-27 05:31:31,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:31,979 INFO L481 AbstractCegarLoop]: Abstraction has 4425 states and 5407 transitions. [2018-10-27 05:31:31,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:31:31,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 5407 transitions. [2018-10-27 05:31:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-10-27 05:31:31,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:31,992 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:31,992 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:31,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:31,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1213894901, now seen corresponding path program 1 times [2018-10-27 05:31:31,993 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:31,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:31,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:31,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:31,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:32,545 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:31:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 426 proven. 482 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-10-27 05:31:33,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:33,447 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:33,447 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 566 with the following transitions: [2018-10-27 05:31:33,448 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:33,450 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:33,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:47,071 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:31:47,072 INFO L272 AbstractInterpreter]: Visited 132 different actions 530 times. Merged at 9 different actions 36 times. Never widened. Found 10 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:31:47,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:47,077 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:31:47,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:47,077 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:31:47,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:47,085 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:47,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 804 proven. 2 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-10-27 05:31:47,614 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 420 proven. 112 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-10-27 05:31:48,241 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:48,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 14 [2018-10-27 05:31:48,242 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:48,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 05:31:48,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 05:31:48,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-10-27 05:31:48,243 INFO L87 Difference]: Start difference. First operand 4425 states and 5407 transitions. Second operand 13 states. [2018-10-27 05:31:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:51,534 INFO L93 Difference]: Finished difference Result 8980 states and 11268 transitions. [2018-10-27 05:31:51,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 05:31:51,535 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 565 [2018-10-27 05:31:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:51,556 INFO L225 Difference]: With dead ends: 8980 [2018-10-27 05:31:51,557 INFO L226 Difference]: Without dead ends: 4730 [2018-10-27 05:31:51,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1159 GetRequests, 1135 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2018-10-27 05:31:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2018-10-27 05:31:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4574. [2018-10-27 05:31:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4574 states. [2018-10-27 05:31:51,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 5431 transitions. [2018-10-27 05:31:51,684 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 5431 transitions. Word has length 565 [2018-10-27 05:31:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:51,685 INFO L481 AbstractCegarLoop]: Abstraction has 4574 states and 5431 transitions. [2018-10-27 05:31:51,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-27 05:31:51,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 5431 transitions. [2018-10-27 05:31:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2018-10-27 05:31:51,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:51,700 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-27 05:31:51,700 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:51,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:51,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1431796904, now seen corresponding path program 2 times [2018-10-27 05:31:51,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:51,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:51,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:51,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:51,702 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 446 proven. 119 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-10-27 05:31:52,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:52,714 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:52,714 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 05:31:52,714 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 05:31:52,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:52,714 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:31:52,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 05:31:52,722 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 05:31:52,819 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-27 05:31:52,820 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 05:31:52,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:53,408 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 05:31:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 554 proven. 2 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2018-10-27 05:31:53,645 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 554 proven. 2 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2018-10-27 05:31:54,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:54,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 05:31:54,403 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:54,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:31:54,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:31:54,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-10-27 05:31:54,405 INFO L87 Difference]: Start difference. First operand 4574 states and 5431 transitions. Second operand 9 states. [2018-10-27 05:32:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:00,667 INFO L93 Difference]: Finished difference Result 14396 states and 19709 transitions. [2018-10-27 05:32:00,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-27 05:32:00,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 658 [2018-10-27 05:32:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:00,725 INFO L225 Difference]: With dead ends: 14396 [2018-10-27 05:32:00,725 INFO L226 Difference]: Without dead ends: 10196 [2018-10-27 05:32:00,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1344 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=388, Invalid=1774, Unknown=0, NotChecked=0, Total=2162 [2018-10-27 05:32:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10196 states. [2018-10-27 05:32:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10196 to 9538. [2018-10-27 05:32:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9538 states. [2018-10-27 05:32:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9538 states to 9538 states and 11230 transitions. [2018-10-27 05:32:01,028 INFO L78 Accepts]: Start accepts. Automaton has 9538 states and 11230 transitions. Word has length 658 [2018-10-27 05:32:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:01,029 INFO L481 AbstractCegarLoop]: Abstraction has 9538 states and 11230 transitions. [2018-10-27 05:32:01,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:32:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9538 states and 11230 transitions. [2018-10-27 05:32:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-10-27 05:32:01,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:01,061 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:32:01,062 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:01,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:01,062 INFO L82 PathProgramCache]: Analyzing trace with hash 643609827, now seen corresponding path program 1 times [2018-10-27 05:32:01,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:01,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:01,063 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 05:32:01,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:01,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 557 proven. 672 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-10-27 05:32:02,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:02,329 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:02,329 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 666 with the following transitions: [2018-10-27 05:32:02,329 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:02,331 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:02,331 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:11,985 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:32:11,985 INFO L272 AbstractInterpreter]: Visited 132 different actions 522 times. Merged at 8 different actions 30 times. Never widened. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 05:32:11,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:11,992 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:32:11,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:11,992 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:32:12,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:12,000 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:32:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:12,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:32:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 1112 proven. 2 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-27 05:32:12,605 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:32:12,920 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-27 05:32:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 370 proven. 144 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2018-10-27 05:32:13,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:32:13,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 21 [2018-10-27 05:32:13,605 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:32:13,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 05:32:13,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 05:32:13,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2018-10-27 05:32:13,606 INFO L87 Difference]: Start difference. First operand 9538 states and 11230 transitions. Second operand 19 states. [2018-10-27 05:32:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:22,498 INFO L93 Difference]: Finished difference Result 21713 states and 27192 transitions. [2018-10-27 05:32:22,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-27 05:32:22,498 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 665 [2018-10-27 05:32:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:22,555 INFO L225 Difference]: With dead ends: 21713 [2018-10-27 05:32:22,555 INFO L226 Difference]: Without dead ends: 11642 [2018-10-27 05:32:22,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1409 GetRequests, 1350 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=698, Invalid=2842, Unknown=0, NotChecked=0, Total=3540 [2018-10-27 05:32:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2018-10-27 05:32:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 10407. [2018-10-27 05:32:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10407 states. [2018-10-27 05:32:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10407 states to 10407 states and 11927 transitions. [2018-10-27 05:32:22,856 INFO L78 Accepts]: Start accepts. Automaton has 10407 states and 11927 transitions. Word has length 665 [2018-10-27 05:32:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:22,857 INFO L481 AbstractCegarLoop]: Abstraction has 10407 states and 11927 transitions. [2018-10-27 05:32:22,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 05:32:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10407 states and 11927 transitions. [2018-10-27 05:32:22,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2018-10-27 05:32:22,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:22,885 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 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] [2018-10-27 05:32:22,886 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:22,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:22,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1245261793, now seen corresponding path program 1 times [2018-10-27 05:32:22,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:22,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:22,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:22,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:22,887 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1643 backedges. 487 proven. 196 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-10-27 05:32:23,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:23,684 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:23,684 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 746 with the following transitions: [2018-10-27 05:32:23,684 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:23,687 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:23,687 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:29,337 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:32:29,337 INFO L272 AbstractInterpreter]: Visited 193 different actions 774 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 05:32:29,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:29,345 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:32:29,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:29,345 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:32:29,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:29,353 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:32:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:29,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:32:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1643 backedges. 1196 proven. 2 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2018-10-27 05:32:29,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:32:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1643 backedges. 487 proven. 196 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-10-27 05:32:30,501 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:32:30,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 05:32:30,502 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:32:30,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:32:30,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:32:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:32:30,504 INFO L87 Difference]: Start difference. First operand 10407 states and 11927 transitions. Second operand 7 states. [2018-10-27 05:32:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:33,305 INFO L93 Difference]: Finished difference Result 24781 states and 31622 transitions. [2018-10-27 05:32:33,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 05:32:33,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 745 [2018-10-27 05:32:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:33,392 INFO L225 Difference]: With dead ends: 24781 [2018-10-27 05:32:33,392 INFO L226 Difference]: Without dead ends: 14565 [2018-10-27 05:32:33,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1507 GetRequests, 1493 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 05:32:33,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14565 states. [2018-10-27 05:32:33,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14565 to 13751. [2018-10-27 05:32:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13751 states. [2018-10-27 05:32:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13751 states to 13751 states and 15991 transitions. [2018-10-27 05:32:33,843 INFO L78 Accepts]: Start accepts. Automaton has 13751 states and 15991 transitions. Word has length 745 [2018-10-27 05:32:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:33,844 INFO L481 AbstractCegarLoop]: Abstraction has 13751 states and 15991 transitions. [2018-10-27 05:32:33,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:32:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 13751 states and 15991 transitions. [2018-10-27 05:32:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2018-10-27 05:32:33,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:33,877 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:32:33,877 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:33,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:33,878 INFO L82 PathProgramCache]: Analyzing trace with hash -601123677, now seen corresponding path program 1 times [2018-10-27 05:32:33,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:33,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:33,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:33,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:33,879 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:34,604 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:32:34,795 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:32:34,994 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:32:35,207 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-27 05:32:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 520 proven. 1131 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-10-27 05:32:36,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:36,781 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:36,781 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 880 with the following transitions: [2018-10-27 05:32:36,782 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:36,784 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:36,785 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:42,435 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:32:42,435 INFO L272 AbstractInterpreter]: Visited 194 different actions 778 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 12 fixpoints after 6 different actions. Largest state had 24 variables. [2018-10-27 05:32:42,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:42,445 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:32:42,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:42,445 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:32:42,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:42,454 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:32:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:42,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:32:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 1552 proven. 2 refuted. 0 times theorem prover too weak. 781 trivial. 0 not checked. [2018-10-27 05:32:43,693 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:32:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 653 proven. 196 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2018-10-27 05:32:44,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:32:44,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6] total 21 [2018-10-27 05:32:44,447 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:32:44,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 05:32:44,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 05:32:44,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2018-10-27 05:32:44,449 INFO L87 Difference]: Start difference. First operand 13751 states and 15991 transitions. Second operand 19 states. [2018-10-27 05:32:46,440 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2018-10-27 05:32:47,570 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2018-10-27 05:32:48,268 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2018-10-27 05:32:48,437 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2018-10-27 05:32:50,030 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-10-27 05:32:50,805 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-27 05:32:51,191 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-27 05:32:52,133 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-27 05:32:53,616 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-27 05:32:54,192 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2018-10-27 05:32:54,347 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-27 05:32:54,903 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-27 05:32:55,524 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-10-27 05:32:56,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:56,374 INFO L93 Difference]: Finished difference Result 29644 states and 35639 transitions. [2018-10-27 05:32:56,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-27 05:32:56,374 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 879 [2018-10-27 05:32:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:56,421 INFO L225 Difference]: With dead ends: 29644 [2018-10-27 05:32:56,421 INFO L226 Difference]: Without dead ends: 16084 [2018-10-27 05:32:56,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1870 GetRequests, 1791 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1915 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1223, Invalid=5097, Unknown=0, NotChecked=0, Total=6320 [2018-10-27 05:32:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16084 states. [2018-10-27 05:32:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16084 to 15694. [2018-10-27 05:32:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15694 states. [2018-10-27 05:32:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15694 states to 15694 states and 18256 transitions. [2018-10-27 05:32:56,823 INFO L78 Accepts]: Start accepts. Automaton has 15694 states and 18256 transitions. Word has length 879 [2018-10-27 05:32:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:56,824 INFO L481 AbstractCegarLoop]: Abstraction has 15694 states and 18256 transitions. [2018-10-27 05:32:56,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 05:32:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 15694 states and 18256 transitions. [2018-10-27 05:32:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2018-10-27 05:32:56,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:56,868 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:32:56,868 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:56,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:56,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1212561807, now seen corresponding path program 1 times [2018-10-27 05:32:56,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:56,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:56,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:56,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:56,871 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2361 backedges. 784 proven. 1467 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-27 05:33:00,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:00,633 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:33:00,633 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 906 with the following transitions: [2018-10-27 05:33:00,633 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:33:00,636 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:33:00,636 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 05:33:04,527 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 05:33:04,528 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 05:33:04,528 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 05:33:04,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:04,529 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:33:04,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:04,538 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:33:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:04,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:33:04,756 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 05:33:04,958 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:33:04,959 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:33:04,964 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:33:04,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:33:04 BoogieIcfgContainer [2018-10-27 05:33:04,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:33:04,966 INFO L168 Benchmark]: Toolchain (without parser) took 236910.23 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 417.5 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:04,967 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 05:33:04,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:04,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 273.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:04,969 INFO L168 Benchmark]: Boogie Preprocessor took 144.56 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:04,969 INFO L168 Benchmark]: RCFGBuilder took 3824.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.7 MB). Peak memory consumption was 132.7 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:04,970 INFO L168 Benchmark]: TraceAbstraction took 231882.64 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 313.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:04,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 780.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 273.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.56 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3824.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.7 MB). Peak memory consumption was 132.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231882.64 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 313.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was analyzing trace of length 906 with TraceHistMax 8,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 231.7s OverallTime, 13 OverallIterations, 8 TraceHistogramMax, 128.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1646 SDtfs, 26103 SDslu, 3725 SDs, 0 SdLazy, 35802 SolverSat, 5935 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 10396 GetRequests, 10027 SyntacticMatches, 11 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5173 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15694occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.5s AbstIntTime, 10 AbstIntIterations, 3 AbstIntStrong, 0.997358664442307 AbsIntWeakeningRatio, 0.0867992766726944 AbsIntAvgWeakeningVarsNumRemoved, 15.990958408679928 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 4127 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 10087 NumberOfCodeBlocks, 9755 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 14464 ConstructedInterpolants, 0 QuantifiedInterpolants, 44309429 SizeOfPredicates, 30 NumberOfNonLiveVariables, 6060 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 23449/28207 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown