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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:02:29,124 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:02:29,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:02:29,139 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:02:29,139 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:02:29,140 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:02:29,142 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:02:29,143 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:02:29,145 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:02:29,146 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:02:29,147 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:02:29,147 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:02:29,148 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:02:29,149 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:02:29,150 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:02:29,151 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:02:29,152 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:02:29,154 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:02:29,156 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:02:29,157 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:02:29,159 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:02:29,160 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:02:29,162 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:02:29,169 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 02:02:29,169 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 02:02:29,170 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 02:02:29,171 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 02:02:29,171 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 02:02:29,187 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:02:29,187 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:02:29,188 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:02:29,188 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:02:29,188 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:02:29,189 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:02:29,189 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:02:29,189 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:02:29,189 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:02:29,190 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:02:29,190 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:02:29,190 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:02:29,191 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:02:29,191 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:02:29,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:02:29,191 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:02:29,191 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:02:29,192 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:02:29,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:02:29,192 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:02:29,192 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:02:29,193 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:02:29,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:02:29,193 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:02:29,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:02:29,193 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:02:29,194 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:02:29,194 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:02:29,194 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:02:29,194 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:02:29,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:02:29,195 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:02:29,195 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:02:29,195 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:02:29,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:02:29,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:02:29,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:02:29,256 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:02:29,257 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:02:29,258 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-10-24 02:02:29,321 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb527467f/f53e734304774084a432bd53b5f1ff9e/FLAGdee41cbae [2018-10-24 02:02:30,124 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:02:30,125 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-10-24 02:02:30,158 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb527467f/f53e734304774084a432bd53b5f1ff9e/FLAGdee41cbae [2018-10-24 02:02:30,187 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb527467f/f53e734304774084a432bd53b5f1ff9e [2018-10-24 02:02:30,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:02:30,204 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:02:30,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:02:30,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:02:30,210 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:02:30,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:02:30" (1/1) ... [2018-10-24 02:02:30,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bfb81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:30, skipping insertion in model container [2018-10-24 02:02:30,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:02:30" (1/1) ... [2018-10-24 02:02:30,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:02:30,354 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:02:31,423 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:02:31,432 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:02:31,870 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:02:31,893 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:02:31,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31 WrapperNode [2018-10-24 02:02:31,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:02:31,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:02:31,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:02:31,895 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:02:31,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (1/1) ... [2018-10-24 02:02:31,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (1/1) ... [2018-10-24 02:02:32,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:02:32,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:02:32,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:02:32,346 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:02:32,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (1/1) ... [2018-10-24 02:02:32,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (1/1) ... [2018-10-24 02:02:32,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (1/1) ... [2018-10-24 02:02:32,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (1/1) ... [2018-10-24 02:02:32,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (1/1) ... [2018-10-24 02:02:32,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (1/1) ... [2018-10-24 02:02:32,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (1/1) ... [2018-10-24 02:02:32,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:02:32,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:02:32,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:02:32,572 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:02:32,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (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 [2018-10-24 02:02:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:02:32,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:02:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:02:32,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:02:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:02:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:02:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:02:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:02:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:02:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:02:42,779 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:02:42,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:02:42 BoogieIcfgContainer [2018-10-24 02:02:42,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:02:42,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:02:42,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:02:42,786 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:02:42,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:02:30" (1/3) ... [2018-10-24 02:02:42,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c14c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:02:42, skipping insertion in model container [2018-10-24 02:02:42,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:31" (2/3) ... [2018-10-24 02:02:42,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c14c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:02:42, skipping insertion in model container [2018-10-24 02:02:42,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:02:42" (3/3) ... [2018-10-24 02:02:42,790 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label15_true-unreach-call.c [2018-10-24 02:02:42,800 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:02:42,810 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:02:42,829 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:02:42,878 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:02:42,878 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:02:42,878 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:02:42,879 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:02:42,879 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:02:42,879 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:02:42,879 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:02:42,880 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:02:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 02:02:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 02:02:42,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:02:42,945 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] [2018-10-24 02:02:42,947 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:02:42,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:02:42,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2012982790, now seen corresponding path program 1 times [2018-10-24 02:02:42,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:02:43,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:02:43,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:02:43,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:02:43,015 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:02:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:02:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:02:43,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:02:43,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:02:43,527 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:02:43,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:02:43,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:02:43,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:02:43,555 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 02:02:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:02:53,534 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-24 02:02:53,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:02:53,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-24 02:02:53,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:02:53,582 INFO L225 Difference]: With dead ends: 2164 [2018-10-24 02:02:53,582 INFO L226 Difference]: Without dead ends: 1554 [2018-10-24 02:02:53,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:02:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-24 02:02:53,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-24 02:02:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-24 02:02:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-24 02:02:53,752 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 43 [2018-10-24 02:02:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:02:53,753 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-24 02:02:53,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:02:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-24 02:02:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 02:02:53,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:02:53,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:02:53,760 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:02:53,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:02:53,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1160890231, now seen corresponding path program 1 times [2018-10-24 02:02:53,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:02:53,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:02:53,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:02:53,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:02:53,763 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:02:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:02:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:02:54,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:02:54,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:02:54,123 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:02:54,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:02:54,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:02:54,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:02:54,126 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-24 02:03:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:03:01,784 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-24 02:03:01,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:03:01,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-10-24 02:03:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:03:01,810 INFO L225 Difference]: With dead ends: 3031 [2018-10-24 02:03:01,811 INFO L226 Difference]: Without dead ends: 1985 [2018-10-24 02:03:01,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:03:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-24 02:03:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-24 02:03:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-24 02:03:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-24 02:03:01,903 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 115 [2018-10-24 02:03:01,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:03:01,904 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-24 02:03:01,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:03:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-24 02:03:01,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 02:03:01,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:03:01,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:03:01,913 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:03:01,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:03:01,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2146986351, now seen corresponding path program 1 times [2018-10-24 02:03:01,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:03:01,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:03:01,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:03:01,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:03:01,915 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:03:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:03:02,558 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-24 02:03:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:03:02,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:03:02,599 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:03:02,600 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 119 with the following transitions: [2018-10-24 02:03:02,602 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [954], [956], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:03:02,678 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:03:02,678 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:03:04,529 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:03:25,781 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 02:03:25,783 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 02:03:25,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:03:25,801 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 02:03:25,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:03:25,801 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 [2018-10-24 02:03:25,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:03:25,821 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 02:03:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:03:25,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 02:03:27,058 WARN L179 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-24 02:03:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:03:27,185 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 02:03:27,618 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 17 [2018-10-24 02:03:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:03:30,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 02:03:30,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-24 02:03:30,306 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:03:30,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:03:30,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:03:30,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 02:03:30,308 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-10-24 02:04:47,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:04:47,377 INFO L93 Difference]: Finished difference Result 7537 states and 12930 transitions. [2018-10-24 02:04:47,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 02:04:47,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-10-24 02:04:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:04:47,416 INFO L225 Difference]: With dead ends: 7537 [2018-10-24 02:04:47,417 INFO L226 Difference]: Without dead ends: 5584 [2018-10-24 02:04:47,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 02:04:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2018-10-24 02:04:47,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 5576. [2018-10-24 02:04:47,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5576 states. [2018-10-24 02:04:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 8741 transitions. [2018-10-24 02:04:47,614 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 8741 transitions. Word has length 118 [2018-10-24 02:04:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:04:47,615 INFO L481 AbstractCegarLoop]: Abstraction has 5576 states and 8741 transitions. [2018-10-24 02:04:47,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:04:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 8741 transitions. [2018-10-24 02:04:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 02:04:47,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:04:47,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:04:47,620 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:04:47,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:04:47,620 INFO L82 PathProgramCache]: Analyzing trace with hash -785829609, now seen corresponding path program 1 times [2018-10-24 02:04:47,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:04:47,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:04:47,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:04:47,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:04:47,622 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:04:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:04:47,921 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:04:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:04:48,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:04:48,390 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:04:48,391 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-10-24 02:04:48,391 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [954], [956], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:04:48,399 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:04:48,399 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:04:49,801 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:04:58,420 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 02:04:58,421 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 02:04:58,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:04:58,459 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 02:04:58,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:04:58,460 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 [2018-10-24 02:04:58,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:04:58,475 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 02:04:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:04:58,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 02:04:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:04:58,715 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 02:04:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:04:58,857 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:04:58,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-24 02:04:58,858 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:04:58,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:04:58,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:04:58,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:04:58,862 INFO L87 Difference]: Start difference. First operand 5576 states and 8741 transitions. Second operand 3 states. [2018-10-24 02:05:05,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:05:05,835 INFO L93 Difference]: Finished difference Result 13771 states and 21566 transitions. [2018-10-24 02:05:05,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:05:05,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2018-10-24 02:05:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:05:05,887 INFO L225 Difference]: With dead ends: 13771 [2018-10-24 02:05:05,887 INFO L226 Difference]: Without dead ends: 8201 [2018-10-24 02:05:05,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 261 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:05:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2018-10-24 02:05:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 8200. [2018-10-24 02:05:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8200 states. [2018-10-24 02:05:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 12097 transitions. [2018-10-24 02:05:06,174 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 12097 transitions. Word has length 131 [2018-10-24 02:05:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:05:06,175 INFO L481 AbstractCegarLoop]: Abstraction has 8200 states and 12097 transitions. [2018-10-24 02:05:06,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:05:06,175 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 12097 transitions. [2018-10-24 02:05:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 02:05:06,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:05:06,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:05:06,180 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:05:06,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:06,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1575860037, now seen corresponding path program 1 times [2018-10-24 02:05:06,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:05:06,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:06,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:06,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:06,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:05:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:05:06,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:05:06,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:05:06,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:05:06,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:05:06,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:05:06,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:05:06,422 INFO L87 Difference]: Start difference. First operand 8200 states and 12097 transitions. Second operand 5 states. [2018-10-24 02:05:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:05:25,169 INFO L93 Difference]: Finished difference Result 25907 states and 40255 transitions. [2018-10-24 02:05:25,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:05:25,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-10-24 02:05:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:05:25,267 INFO L225 Difference]: With dead ends: 25907 [2018-10-24 02:05:25,268 INFO L226 Difference]: Without dead ends: 17713 [2018-10-24 02:05:25,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:05:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17713 states. [2018-10-24 02:05:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17713 to 17588. [2018-10-24 02:05:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17588 states. [2018-10-24 02:05:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17588 states to 17588 states and 24405 transitions. [2018-10-24 02:05:25,783 INFO L78 Accepts]: Start accepts. Automaton has 17588 states and 24405 transitions. Word has length 133 [2018-10-24 02:05:25,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:05:25,784 INFO L481 AbstractCegarLoop]: Abstraction has 17588 states and 24405 transitions. [2018-10-24 02:05:25,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:05:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 17588 states and 24405 transitions. [2018-10-24 02:05:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 02:05:25,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:05:25,791 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 02:05:25,791 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:05:25,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:25,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1752060658, now seen corresponding path program 1 times [2018-10-24 02:05:25,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:05:25,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:25,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:25,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:25,799 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:05:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:26,048 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:05:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 02:05:26,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:05:26,484 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:05:26,485 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-24 02:05:26,485 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [954], [956], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1235], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:05:26,493 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:05:26,493 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:05:27,388 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:05:45,386 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 02:05:45,387 INFO L272 AbstractInterpreter]: Visited 87 different actions 572 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 02:05:45,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:45,394 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 02:05:45,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:05:45,394 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 [2018-10-24 02:05:45,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:45,404 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 02:05:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:45,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 02:05:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:05:45,617 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 02:05:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:05:45,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 02:05:45,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 02:05:45,812 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 02:05:45,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 02:05:45,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 02:05:45,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 02:05:45,813 INFO L87 Difference]: Start difference. First operand 17588 states and 24405 transitions. Second operand 9 states. [2018-10-24 02:05:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:05:56,880 INFO L93 Difference]: Finished difference Result 35690 states and 50065 transitions. [2018-10-24 02:05:56,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 02:05:56,881 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2018-10-24 02:05:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:05:56,934 INFO L225 Difference]: With dead ends: 35690 [2018-10-24 02:05:56,934 INFO L226 Difference]: Without dead ends: 15465 [2018-10-24 02:05:56,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 390 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-24 02:05:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15465 states. [2018-10-24 02:05:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15465 to 14993. [2018-10-24 02:05:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14993 states. [2018-10-24 02:05:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14993 states to 14993 states and 17822 transitions. [2018-10-24 02:05:57,311 INFO L78 Accepts]: Start accepts. Automaton has 14993 states and 17822 transitions. Word has length 196 [2018-10-24 02:05:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:05:57,311 INFO L481 AbstractCegarLoop]: Abstraction has 14993 states and 17822 transitions. [2018-10-24 02:05:57,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 02:05:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 14993 states and 17822 transitions. [2018-10-24 02:05:57,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-24 02:05:57,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:05:57,321 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:05:57,321 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:05:57,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:57,322 INFO L82 PathProgramCache]: Analyzing trace with hash 768786709, now seen corresponding path program 1 times [2018-10-24 02:05:57,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:05:57,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:57,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:57,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:57,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:05:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:58,003 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 02:05:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 73 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 02:05:58,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:05:58,837 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:05:58,837 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-10-24 02:05:58,838 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [954], [956], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1692], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:05:58,857 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:05:58,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:06:00,138 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:06:19,583 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 02:06:19,584 INFO L272 AbstractInterpreter]: Visited 175 different actions 511 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 02:06:19,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:06:19,592 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 02:06:19,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:06:19,592 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 [2018-10-24 02:06:19,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:06:19,602 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 02:06:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:06:19,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 02:06:22,114 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-24 02:06:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-24 02:06:22,330 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 02:06:23,123 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-24 02:06:23,234 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-24 02:06:25,961 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-10-24 02:06:25,971 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2018-10-24 02:06:26,470 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2018-10-24 02:06:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 77 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:06:27,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 02:06:27,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 21 [2018-10-24 02:06:27,898 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:06:27,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:06:27,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:06:27,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2018-10-24 02:06:27,901 INFO L87 Difference]: Start difference. First operand 14993 states and 17822 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 02:06:31,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 02:06:31,378 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:06:31,383 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:06:31,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:06:31 BoogieIcfgContainer [2018-10-24 02:06:31,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:06:31,384 INFO L168 Benchmark]: Toolchain (without parser) took 241181.30 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -361.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 02:06:31,385 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:06:31,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1688.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 02:06:31,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 450.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:06:31,388 INFO L168 Benchmark]: Boogie Preprocessor took 225.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-24 02:06:31,388 INFO L168 Benchmark]: RCFGBuilder took 10209.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 479.0 MB). Peak memory consumption was 479.0 MB. Max. memory is 7.1 GB. [2018-10-24 02:06:31,389 INFO L168 Benchmark]: TraceAbstraction took 228601.32 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -55.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 02:06:31,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1688.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 450.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10209.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 479.0 MB). Peak memory consumption was 479.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228601.32 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -55.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 116). Cancelled while BasicCegarLoop was constructing difference of abstraction (14993states) and FLOYD_HOARE automaton (currently 10 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (3064 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 228.5s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 135.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2001 SDtfs, 12500 SDslu, 1556 SDs, 0 SdLazy, 17904 SolverSat, 5463 SolverUnsat, 23 SolverUnknown, 0 SolverNotchecked, 127.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1557 GetRequests, 1474 SyntacticMatches, 13 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17588occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 72.9s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 1134 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 1775 NumberOfCodeBlocks, 1775 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2502 ConstructedInterpolants, 346 QuantifiedInterpolants, 5676185 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1432 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 956/1209 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown