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/Problem11_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:39:21,158 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:39:21,160 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:39:21,172 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:39:21,173 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:39:21,174 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:39:21,175 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:39:21,177 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:39:21,179 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:39:21,180 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:39:21,180 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:39:21,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:39:21,182 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:39:21,183 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:39:21,184 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:39:21,185 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:39:21,186 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:39:21,188 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:39:21,190 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:39:21,191 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:39:21,192 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:39:21,194 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:39:21,196 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:39:21,197 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:39:21,197 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:39:21,198 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:39:21,199 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:39:21,200 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:39:21,201 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:39:21,202 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:39:21,202 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:39:21,203 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 07:39:21,206 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 07:39:21,221 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:39:21,222 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:39:21,222 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:39:21,223 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:39:21,223 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:39:21,223 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:39:21,223 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:39:21,223 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:39:21,224 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:39:21,224 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:39:21,224 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:39:21,224 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:39:21,224 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:39:21,225 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:39:21,225 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:39:21,225 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:39:21,226 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:39:21,226 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:39:21,226 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:39:21,226 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:39:21,226 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:39:21,227 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:39:21,227 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:39:21,227 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:39:21,227 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:39:21,228 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:39:21,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:39:21,228 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:39:21,228 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:39:21,228 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:39:21,229 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:39:21,229 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:39:21,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:39:21,229 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:39:21,229 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:39:21,230 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:39:21,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:39:21,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:39:21,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:39:21,308 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:39:21,309 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:39:21,309 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label55_true-unreach-call.c [2018-10-27 07:39:21,370 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/93ca2ea48/78715ce1ed3b491cbdc185047e1f8271/FLAGa68c25fba [2018-10-27 07:39:21,980 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:39:21,982 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label55_true-unreach-call.c [2018-10-27 07:39:21,999 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/93ca2ea48/78715ce1ed3b491cbdc185047e1f8271/FLAGa68c25fba [2018-10-27 07:39:22,018 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/93ca2ea48/78715ce1ed3b491cbdc185047e1f8271 [2018-10-27 07:39:22,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:39:22,032 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:39:22,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:39:22,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:39:22,041 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:39:22,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:22,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58cac14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22, skipping insertion in model container [2018-10-27 07:39:22,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:22,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:39:22,133 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:39:22,742 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:39:22,747 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:39:22,963 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:39:22,986 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:39:22,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22 WrapperNode [2018-10-27 07:39:22,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:39:22,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:39:22,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:39:22,989 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:39:22,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:23,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:23,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:39:23,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:39:23,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:39:23,299 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:39:23,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:23,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:23,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:23,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:23,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:23,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:23,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (1/1) ... [2018-10-27 07:39:23,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:39:23,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:39:23,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:39:23,435 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:39:23,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (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 07:39:23,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:39:23,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:39:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:39:23,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:39:23,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:39:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:39:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:39:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:39:27,671 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:39:27,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:27 BoogieIcfgContainer [2018-10-27 07:39:27,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:39:27,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:39:27,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:39:27,677 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:39:27,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:39:22" (1/3) ... [2018-10-27 07:39:27,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f020ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:27, skipping insertion in model container [2018-10-27 07:39:27,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22" (2/3) ... [2018-10-27 07:39:27,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f020ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:27, skipping insertion in model container [2018-10-27 07:39:27,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:27" (3/3) ... [2018-10-27 07:39:27,681 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label55_true-unreach-call.c [2018-10-27 07:39:27,691 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:39:27,701 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:39:27,720 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:39:27,769 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:39:27,769 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:39:27,769 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:39:27,769 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:39:27,770 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:39:27,770 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:39:27,770 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:39:27,770 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:39:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 07:39:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-27 07:39:27,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:27,826 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:39:27,829 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:27,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash 2008695804, now seen corresponding path program 1 times [2018-10-27 07:39:27,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:27,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:27,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:27,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:27,892 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:28,348 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 07:39:28,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:39:28,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:39:28,351 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:28,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:39:28,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:39:28,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:39:28,377 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 07:39:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:39:31,794 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-10-27 07:39:31,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:39:31,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-27 07:39:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:39:31,821 INFO L225 Difference]: With dead ends: 979 [2018-10-27 07:39:31,821 INFO L226 Difference]: Without dead ends: 680 [2018-10-27 07:39:31,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:39:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-10-27 07:39:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-10-27 07:39:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-10-27 07:39:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-10-27 07:39:31,941 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 52 [2018-10-27 07:39:31,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:39:31,941 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-10-27 07:39:31,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:39:31,942 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-10-27 07:39:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 07:39:31,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:31,950 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:31,951 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:31,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:31,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1306963893, now seen corresponding path program 1 times [2018-10-27 07:39:31,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:31,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:31,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:31,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:31,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:39:32,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:39:32,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:39:32,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:32,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:39:32,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:39:32,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:39:32,306 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-10-27 07:39:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:39:36,044 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-10-27 07:39:36,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:39:36,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-27 07:39:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:39:36,056 INFO L225 Difference]: With dead ends: 1555 [2018-10-27 07:39:36,056 INFO L226 Difference]: Without dead ends: 1077 [2018-10-27 07:39:36,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:39:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-10-27 07:39:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-10-27 07:39:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-27 07:39:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-10-27 07:39:36,113 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 125 [2018-10-27 07:39:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:39:36,114 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-10-27 07:39:36,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:39:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-10-27 07:39:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-27 07:39:36,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:36,119 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:36,119 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:36,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:36,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1349379296, now seen corresponding path program 1 times [2018-10-27 07:39:36,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:36,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:36,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:36,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:36,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:39:36,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:39:36,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:39:36,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:36,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:39:36,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:39:36,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:39:36,407 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-10-27 07:39:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:39:39,773 INFO L93 Difference]: Finished difference Result 2907 states and 4465 transitions. [2018-10-27 07:39:39,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:39:39,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-10-27 07:39:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:39:39,799 INFO L225 Difference]: With dead ends: 2907 [2018-10-27 07:39:39,799 INFO L226 Difference]: Without dead ends: 1850 [2018-10-27 07:39:39,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:39:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-10-27 07:39:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1646. [2018-10-27 07:39:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-10-27 07:39:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2436 transitions. [2018-10-27 07:39:39,875 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2436 transitions. Word has length 126 [2018-10-27 07:39:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:39:39,876 INFO L481 AbstractCegarLoop]: Abstraction has 1646 states and 2436 transitions. [2018-10-27 07:39:39,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:39:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2436 transitions. [2018-10-27 07:39:39,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-27 07:39:39,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:39,883 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:39,884 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:39,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:39,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1663032705, now seen corresponding path program 1 times [2018-10-27 07:39:39,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:39,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:39,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:39,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:39,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:39:40,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:39:40,178 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:39:40,179 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-10-27 07:39:40,181 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [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], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:39:40,236 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:39:40,236 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:39:40,965 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:39:40,967 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 07:39:41,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:41,009 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:39:41,773 INFO L227 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 73.8% of their original sizes. [2018-10-27 07:39:41,773 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:39:42,017 INFO L415 sIntCurrentIteration]: We unified 146 AI predicates to 146 [2018-10-27 07:39:42,017 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:39:42,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:39:42,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 07:39:42,018 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:42,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:39:42,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:39:42,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:39:42,020 INFO L87 Difference]: Start difference. First operand 1646 states and 2436 transitions. Second operand 6 states. [2018-10-27 07:40:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:40:03,090 INFO L93 Difference]: Finished difference Result 3478 states and 5113 transitions. [2018-10-27 07:40:03,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:40:03,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-10-27 07:40:03,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:40:03,101 INFO L225 Difference]: With dead ends: 3478 [2018-10-27 07:40:03,101 INFO L226 Difference]: Without dead ends: 1838 [2018-10-27 07:40:03,106 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 147 GetRequests, 142 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 07:40:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2018-10-27 07:40:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2018-10-27 07:40:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2018-10-27 07:40:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2636 transitions. [2018-10-27 07:40:03,154 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2636 transitions. Word has length 147 [2018-10-27 07:40:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:40:03,154 INFO L481 AbstractCegarLoop]: Abstraction has 1836 states and 2636 transitions. [2018-10-27 07:40:03,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:40:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2636 transitions. [2018-10-27 07:40:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-27 07:40:03,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:40:03,162 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:40:03,162 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:40:03,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:03,163 INFO L82 PathProgramCache]: Analyzing trace with hash 639193526, now seen corresponding path program 1 times [2018-10-27 07:40:03,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:40:03,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:03,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:03,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:03,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:40:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-27 07:40:03,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:03,806 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:40:03,806 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-10-27 07:40:03,807 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [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], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:40:03,813 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:40:03,814 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:40:04,344 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:40:04,345 INFO L272 AbstractInterpreter]: Visited 126 different actions 375 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:40:04,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:04,364 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:40:04,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:04,365 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 07:40:04,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:04,374 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:40:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:04,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:40:05,455 WARN L179 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-10-27 07:40:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-27 07:40:05,634 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:40:05,927 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-27 07:40:06,544 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 6 [2018-10-27 07:40:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-27 07:40:07,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 07:40:07,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-27 07:40:07,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:40:07,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:40:07,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:40:07,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 07:40:07,138 INFO L87 Difference]: Start difference. First operand 1836 states and 2636 transitions. Second operand 6 states. [2018-10-27 07:40:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:40:10,876 INFO L93 Difference]: Finished difference Result 5773 states and 9013 transitions. [2018-10-27 07:40:10,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:40:10,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 264 [2018-10-27 07:40:10,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:40:10,913 INFO L225 Difference]: With dead ends: 5773 [2018-10-27 07:40:10,914 INFO L226 Difference]: Without dead ends: 4133 [2018-10-27 07:40:10,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 523 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 07:40:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2018-10-27 07:40:11,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 4133. [2018-10-27 07:40:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4133 states. [2018-10-27 07:40:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 6246 transitions. [2018-10-27 07:40:11,053 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 6246 transitions. Word has length 264 [2018-10-27 07:40:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:40:11,054 INFO L481 AbstractCegarLoop]: Abstraction has 4133 states and 6246 transitions. [2018-10-27 07:40:11,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:40:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 6246 transitions. [2018-10-27 07:40:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-27 07:40:11,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:40:11,065 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:40:11,066 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:40:11,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1866650356, now seen corresponding path program 1 times [2018-10-27 07:40:11,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:40:11,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:11,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:11,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:11,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:40:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:11,716 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:40:11,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:11,716 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:40:11,717 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 288 with the following transitions: [2018-10-27 07:40:11,717 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [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], [618], [621], [625], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:40:11,726 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:40:11,727 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:40:12,236 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:40:12,236 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 07:40:12,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:12,274 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:40:12,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:12,274 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 07:40:12,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:12,288 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:40:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:12,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:40:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-27 07:40:12,540 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:40:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-27 07:40:12,765 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:40:12,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-27 07:40:12,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:40:12,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:40:12,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:40:12,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:40:12,766 INFO L87 Difference]: Start difference. First operand 4133 states and 6246 transitions. Second operand 3 states. [2018-10-27 07:40:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:40:14,638 INFO L93 Difference]: Finished difference Result 11265 states and 17956 transitions. [2018-10-27 07:40:14,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:40:14,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 287 [2018-10-27 07:40:14,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:40:14,693 INFO L225 Difference]: With dead ends: 11265 [2018-10-27 07:40:14,693 INFO L226 Difference]: Without dead ends: 7328 [2018-10-27 07:40:14,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:40:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2018-10-27 07:40:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 7320. [2018-10-27 07:40:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7320 states. [2018-10-27 07:40:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7320 states to 7320 states and 10427 transitions. [2018-10-27 07:40:14,930 INFO L78 Accepts]: Start accepts. Automaton has 7320 states and 10427 transitions. Word has length 287 [2018-10-27 07:40:14,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:40:14,930 INFO L481 AbstractCegarLoop]: Abstraction has 7320 states and 10427 transitions. [2018-10-27 07:40:14,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:40:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 7320 states and 10427 transitions. [2018-10-27 07:40:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-27 07:40:14,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:40:14,964 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:40:14,965 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:40:14,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:14,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2118604793, now seen corresponding path program 1 times [2018-10-27 07:40:14,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:40:14,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:14,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:14,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:14,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:40:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-27 07:40:16,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:16,189 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:40:16,189 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 361 with the following transitions: [2018-10-27 07:40:16,190 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:40:16,196 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:40:16,197 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:40:16,860 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:40:16,861 INFO L272 AbstractInterpreter]: Visited 187 different actions 736 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:40:16,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:16,898 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:40:16,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:16,899 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 07:40:16,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:16,911 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:40:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:17,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:40:19,717 WARN L179 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-27 07:40:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 11 proven. 86 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-27 07:40:20,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:40:20,695 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:20,742 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:20,813 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:20,859 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:20,929 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:20,980 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,029 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,171 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,262 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,307 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,371 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,409 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,461 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,501 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,600 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,644 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,690 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,816 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,854 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,893 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,935 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:21,980 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,018 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,088 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,162 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,244 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,324 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,365 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,403 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,445 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,526 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,611 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,654 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:22,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:23,107 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:23,429 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:23,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:23,859 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:23,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:23,948 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:23,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,194 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,382 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,444 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,481 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,519 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,557 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,595 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,637 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,676 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,719 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,788 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,841 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,881 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,920 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:24,958 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,017 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,055 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,094 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,133 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,170 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,210 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,248 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,285 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,344 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,444 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,485 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,524 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,570 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,611 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,867 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,908 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,952 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:25,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,025 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,061 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,098 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,135 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,451 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,624 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,663 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,701 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,737 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,823 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,862 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,900 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,939 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:26,977 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,035 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,072 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,111 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,150 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,191 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,227 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,266 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,325 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,365 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,404 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,441 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,477 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,517 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,556 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,618 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:27,660 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:28,050 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:28,390 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:28,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:28,814 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:28,851 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:28,898 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,163 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,199 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,249 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,323 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,360 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,407 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,443 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,483 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,519 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,557 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,594 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,632 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,694 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,818 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,857 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,912 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:29,974 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,016 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,052 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,089 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,128 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,168 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,203 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,241 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,277 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,332 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,370 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,407 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,449 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,522 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,558 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,596 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,632 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,669 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,721 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,759 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,798 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,835 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,873 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,947 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:30,985 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:31,024 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:31,068 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:31,106 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:31,142 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:31,179 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:31,215 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:31,256 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:31,310 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:40:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 93 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:40:35,066 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:40:35,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2018-10-27 07:40:35,066 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:40:35,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 07:40:35,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 07:40:35,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=333, Unknown=1, NotChecked=0, Total=462 [2018-10-27 07:40:35,068 INFO L87 Difference]: Start difference. First operand 7320 states and 10427 transitions. Second operand 16 states. [2018-10-27 07:40:39,024 WARN L179 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-27 07:40:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:40:52,896 INFO L93 Difference]: Finished difference Result 32555 states and 58461 transitions. [2018-10-27 07:40:52,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-27 07:40:52,896 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 360 [2018-10-27 07:40:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:40:53,156 INFO L225 Difference]: With dead ends: 32555 [2018-10-27 07:40:53,156 INFO L226 Difference]: Without dead ends: 25431 [2018-10-27 07:40:53,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 544 SyntacticMatches, 168 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=743, Invalid=2118, Unknown=1, NotChecked=0, Total=2862 [2018-10-27 07:40:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25431 states. [2018-10-27 07:40:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25431 to 24538. [2018-10-27 07:40:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24538 states. [2018-10-27 07:40:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24538 states to 24538 states and 35231 transitions. [2018-10-27 07:40:54,292 INFO L78 Accepts]: Start accepts. Automaton has 24538 states and 35231 transitions. Word has length 360 [2018-10-27 07:40:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:40:54,293 INFO L481 AbstractCegarLoop]: Abstraction has 24538 states and 35231 transitions. [2018-10-27 07:40:54,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 07:40:54,294 INFO L276 IsEmpty]: Start isEmpty. Operand 24538 states and 35231 transitions. [2018-10-27 07:40:54,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-27 07:40:54,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:40:54,433 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:54,434 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:40:54,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:54,434 INFO L82 PathProgramCache]: Analyzing trace with hash 10779233, now seen corresponding path program 1 times [2018-10-27 07:40:54,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:40:54,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:54,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:54,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:54,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:40:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-27 07:40:55,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:55,101 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:40:55,102 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-10-27 07:40:55,102 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [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], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:40:55,107 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:40:55,107 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:40:55,874 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:40:55,874 INFO L272 AbstractInterpreter]: Visited 156 different actions 615 times. Merged at 7 different actions 26 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:40:55,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:55,879 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:40:55,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:55,879 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 07:40:55,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:55,892 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:40:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:56,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:40:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-27 07:40:56,270 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:40:56,421 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 07:40:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-27 07:40:57,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:40:57,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 07:40:57,270 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:40:57,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 07:40:57,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 07:40:57,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:40:57,272 INFO L87 Difference]: Start difference. First operand 24538 states and 35231 transitions. Second operand 7 states. [2018-10-27 07:41:00,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:41:00,814 INFO L93 Difference]: Finished difference Result 63908 states and 99101 transitions. [2018-10-27 07:41:00,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 07:41:00,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2018-10-27 07:41:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:41:00,985 INFO L225 Difference]: With dead ends: 63908 [2018-10-27 07:41:00,986 INFO L226 Difference]: Without dead ends: 39566 [2018-10-27 07:41:01,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 797 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-10-27 07:41:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39566 states. [2018-10-27 07:41:01,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39566 to 39025. [2018-10-27 07:41:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39025 states. [2018-10-27 07:41:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39025 states to 39025 states and 56209 transitions. [2018-10-27 07:41:02,124 INFO L78 Accepts]: Start accepts. Automaton has 39025 states and 56209 transitions. Word has length 398 [2018-10-27 07:41:02,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:41:02,124 INFO L481 AbstractCegarLoop]: Abstraction has 39025 states and 56209 transitions. [2018-10-27 07:41:02,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 07:41:02,125 INFO L276 IsEmpty]: Start isEmpty. Operand 39025 states and 56209 transitions. [2018-10-27 07:41:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-10-27 07:41:02,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:41:02,288 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:02,288 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:41:02,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:41:02,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1320224044, now seen corresponding path program 1 times [2018-10-27 07:41:02,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:41:02,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:41:02,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:41:02,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:41:02,290 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:41:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:41:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 360 proven. 99 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 07:41:03,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:41:03,089 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:41:03,089 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 430 with the following transitions: [2018-10-27 07:41:03,090 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [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], [626], [629], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:41:03,094 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:41:03,094 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:41:03,920 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:41:03,920 INFO L272 AbstractInterpreter]: Visited 156 different actions 462 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:41:03,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:41:03,928 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:41:03,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:41:03,928 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 07:41:03,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:41:03,936 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:41:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:41:04,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:41:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-27 07:41:04,168 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:41:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-27 07:41:04,484 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:41:04,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-27 07:41:04,485 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:41:04,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:41:04,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:41:04,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:41:04,486 INFO L87 Difference]: Start difference. First operand 39025 states and 56209 transitions. Second operand 6 states. [2018-10-27 07:41:06,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:41:06,572 INFO L93 Difference]: Finished difference Result 83691 states and 128630 transitions. [2018-10-27 07:41:06,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:41:06,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 429 [2018-10-27 07:41:06,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:41:06,775 INFO L225 Difference]: With dead ends: 83691 [2018-10-27 07:41:06,775 INFO L226 Difference]: Without dead ends: 44862 [2018-10-27 07:41:06,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 859 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:41:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44862 states. [2018-10-27 07:41:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44862 to 43535. [2018-10-27 07:41:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43535 states. [2018-10-27 07:41:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43535 states to 43535 states and 57993 transitions. [2018-10-27 07:41:08,006 INFO L78 Accepts]: Start accepts. Automaton has 43535 states and 57993 transitions. Word has length 429 [2018-10-27 07:41:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:41:08,007 INFO L481 AbstractCegarLoop]: Abstraction has 43535 states and 57993 transitions. [2018-10-27 07:41:08,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:41:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 43535 states and 57993 transitions. [2018-10-27 07:41:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-10-27 07:41:08,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:41:08,163 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 07:41:08,163 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:41:08,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:41:08,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1633679686, now seen corresponding path program 1 times [2018-10-27 07:41:08,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:41:08,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:41:08,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:41:08,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:41:08,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:41:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:41:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 141 proven. 234 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-27 07:41:08,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:41:08,596 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:41:08,597 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 441 with the following transitions: [2018-10-27 07:41:08,597 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [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], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:41:08,601 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:41:08,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:41:09,698 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:41:09,698 INFO L272 AbstractInterpreter]: Visited 160 different actions 632 times. Merged at 8 different actions 30 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:41:09,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:41:09,705 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:41:09,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:41:09,705 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 07:41:09,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:41:09,715 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:41:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:41:09,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:41:13,063 WARN L179 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-10-27 07:41:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 328 proven. 107 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-10-27 07:41:13,250 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:41:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 374 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:41:14,241 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:41:14,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2018-10-27 07:41:14,241 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:41:14,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 07:41:14,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 07:41:14,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=176, Unknown=3, NotChecked=0, Total=240 [2018-10-27 07:41:14,243 INFO L87 Difference]: Start difference. First operand 43535 states and 57993 transitions. Second operand 11 states. [2018-10-27 07:41:14,803 WARN L179 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-27 07:42:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:42:54,904 INFO L93 Difference]: Finished difference Result 108491 states and 159036 transitions. [2018-10-27 07:42:54,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-27 07:42:54,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 440 [2018-10-27 07:42:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:42:55,246 INFO L225 Difference]: With dead ends: 108491 [2018-10-27 07:42:55,247 INFO L226 Difference]: Without dead ends: 65151 [2018-10-27 07:42:55,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 885 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=277, Invalid=767, Unknown=12, NotChecked=0, Total=1056 [2018-10-27 07:42:55,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65151 states. [2018-10-27 07:42:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65151 to 61483. [2018-10-27 07:42:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61483 states. [2018-10-27 07:42:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61483 states to 61483 states and 82206 transitions. [2018-10-27 07:42:57,233 INFO L78 Accepts]: Start accepts. Automaton has 61483 states and 82206 transitions. Word has length 440 [2018-10-27 07:42:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:42:57,234 INFO L481 AbstractCegarLoop]: Abstraction has 61483 states and 82206 transitions. [2018-10-27 07:42:57,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-27 07:42:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 61483 states and 82206 transitions. [2018-10-27 07:42:57,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-10-27 07:42:57,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:42:57,413 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:57,413 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:42:57,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:57,413 INFO L82 PathProgramCache]: Analyzing trace with hash 825658629, now seen corresponding path program 1 times [2018-10-27 07:42:57,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:42:57,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:57,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:57,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:57,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:42:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:58,048 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 07:42:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 255 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 07:42:58,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:42:58,846 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:42:58,847 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 442 with the following transitions: [2018-10-27 07:42:58,847 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [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], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [1002], [1005], [1008], [1012], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:42:58,853 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:42:58,853 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:43:00,225 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:43:00,226 INFO L272 AbstractInterpreter]: Visited 187 different actions 741 times. Merged at 8 different actions 30 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:43:00,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:00,232 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:43:00,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:43:00,232 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 07:43:00,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:43:00,241 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:43:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:43:00,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:43:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-10-27 07:43:01,020 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:43:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 255 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 07:43:02,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:43:02,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 8] total 22 [2018-10-27 07:43:02,219 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:43:02,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 07:43:02,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 07:43:02,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2018-10-27 07:43:02,221 INFO L87 Difference]: Start difference. First operand 61483 states and 82206 transitions. Second operand 17 states. [2018-10-27 07:43:03,801 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2018-10-27 07:43:05,107 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-27 07:43:05,656 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-27 07:43:06,683 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-10-27 07:43:10,840 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2018-10-27 07:43:12,428 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-10-27 07:43:14,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:43:14,273 INFO L93 Difference]: Finished difference Result 134481 states and 188401 transitions. [2018-10-27 07:43:14,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-27 07:43:14,273 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 441 [2018-10-27 07:43:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:43:14,543 INFO L225 Difference]: With dead ends: 134481 [2018-10-27 07:43:14,544 INFO L226 Difference]: Without dead ends: 73193 [2018-10-27 07:43:14,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 912 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1091, Invalid=3331, Unknown=0, NotChecked=0, Total=4422 [2018-10-27 07:43:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73193 states. [2018-10-27 07:43:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73193 to 72321. [2018-10-27 07:43:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72321 states. Received shutdown request... [2018-10-27 07:43:17,045 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:43:17,053 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:43:17,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:43:17 BoogieIcfgContainer [2018-10-27 07:43:17,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:43:17,055 INFO L168 Benchmark]: Toolchain (without parser) took 235023.87 ms. Allocated memory was 1.6 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,056 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:43:17,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 954.79 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 309.76 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -871.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,062 INFO L168 Benchmark]: Boogie Preprocessor took 136.00 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:43:17,062 INFO L168 Benchmark]: RCFGBuilder took 4237.90 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: 186.7 MB). Peak memory consumption was 186.7 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,063 INFO L168 Benchmark]: TraceAbstraction took 229379.99 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -864.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,069 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 954.79 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 309.76 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -871.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.00 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4237.90 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: 186.7 MB). Peak memory consumption was 186.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229379.99 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -864.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while ReachableStatesComputation was computing reachable states (59183 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 229.2s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 175.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2203 SDtfs, 15211 SDslu, 3201 SDs, 0 SdLazy, 27961 SolverSat, 7146 SolverUnsat, 72 SolverUnknown, 0 SolverNotchecked, 138.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5629 GetRequests, 5245 SyntacticMatches, 187 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3724 ImplicationChecksByTransitivity, 41.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61483occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.7s AbstIntTime, 8 AbstIntIterations, 1 AbstIntStrong, 0.9978284158763612 AbsIntWeakeningRatio, 0.1506849315068493 AbsIntAvgWeakeningVarsNumRemoved, 18.335616438356166 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 6853 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 33.9s InterpolantComputationTime, 5688 NumberOfCodeBlocks, 5688 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8282 ConstructedInterpolants, 430 QuantifiedInterpolants, 23947056 SizeOfPredicates, 19 NumberOfNonLiveVariables, 4241 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 6042/7332 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown