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/Problem18_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:46:44,140 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:46:44,142 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:46:44,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:46:44,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:46:44,160 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:46:44,161 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:46:44,163 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:46:44,164 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:46:44,165 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:46:44,166 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:46:44,166 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:46:44,167 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:46:44,168 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:46:44,169 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:46:44,170 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:46:44,171 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:46:44,173 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:46:44,175 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:46:44,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:46:44,178 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:46:44,179 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:46:44,182 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:46:44,188 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:46:44,188 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:46:44,189 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:46:44,190 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:46:44,190 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:46:44,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:46:44,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:46:44,207 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:46:44,208 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:46:44,208 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:46:44,208 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:46:44,208 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:46:44,208 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:46:44,208 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:46:44,209 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:46:44,209 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:46:44,209 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:46:44,210 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:46:44,210 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:46:44,210 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:46:44,210 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:46:44,211 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:46:44,211 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:46:44,211 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:46:44,211 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:46:44,211 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:46:44,212 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:46:44,212 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:46:44,212 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:46:44,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:46:44,212 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:46:44,213 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:46:44,216 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:46:44,216 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:46:44,216 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:46:44,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:46:44,217 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:46:44,217 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:46:44,217 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:46:44,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:46:44,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:46:44,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:46:44,294 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:46:44,294 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:46:44,296 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label53_true-unreach-call.c [2018-10-27 03:46:44,364 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2b96988b9/e64f08d95627434b9e1cf95f83c6b996/FLAG77758d219 [2018-10-27 03:46:45,112 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:46:45,113 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label53_true-unreach-call.c [2018-10-27 03:46:45,145 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2b96988b9/e64f08d95627434b9e1cf95f83c6b996/FLAG77758d219 [2018-10-27 03:46:45,165 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2b96988b9/e64f08d95627434b9e1cf95f83c6b996 [2018-10-27 03:46:45,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:46:45,180 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:46:45,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:46:45,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:46:45,190 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:46:45,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:46:45" (1/1) ... [2018-10-27 03:46:45,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:45, skipping insertion in model container [2018-10-27 03:46:45,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:46:45" (1/1) ... [2018-10-27 03:46:45,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:46:45,358 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:46:46,456 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:46:46,461 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:46:46,999 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:46:47,029 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:46:47,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47 WrapperNode [2018-10-27 03:46:47,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:46:47,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:46:47,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:46:47,032 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:46:47,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (1/1) ... [2018-10-27 03:46:47,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (1/1) ... [2018-10-27 03:46:47,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:46:47,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:46:47,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:46:47,425 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:46:47,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (1/1) ... [2018-10-27 03:46:47,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (1/1) ... [2018-10-27 03:46:47,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (1/1) ... [2018-10-27 03:46:47,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (1/1) ... [2018-10-27 03:46:47,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (1/1) ... [2018-10-27 03:46:47,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (1/1) ... [2018-10-27 03:46:47,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (1/1) ... [2018-10-27 03:46:47,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:46:47,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:46:47,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:46:47,653 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:46:47,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (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 03:46:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:46:47,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:46:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 03:46:47,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 03:46:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:46:47,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:46:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:46:47,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:46:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:46:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:46:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:46:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:46:55,944 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:46:55,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:46:55 BoogieIcfgContainer [2018-10-27 03:46:55,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:46:55,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:46:55,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:46:55,950 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:46:55,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:46:45" (1/3) ... [2018-10-27 03:46:55,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316b4788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:46:55, skipping insertion in model container [2018-10-27 03:46:55,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:46:47" (2/3) ... [2018-10-27 03:46:55,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316b4788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:46:55, skipping insertion in model container [2018-10-27 03:46:55,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:46:55" (3/3) ... [2018-10-27 03:46:55,954 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label53_true-unreach-call.c [2018-10-27 03:46:55,965 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:46:55,975 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:46:55,994 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:46:56,041 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:46:56,041 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:46:56,041 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:46:56,042 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:46:56,042 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:46:56,042 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:46:56,042 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:46:56,042 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:46:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 03:46:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-27 03:46:56,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:46:56,096 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] [2018-10-27 03:46:56,099 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:46:56,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:46:56,105 INFO L82 PathProgramCache]: Analyzing trace with hash 861122892, now seen corresponding path program 1 times [2018-10-27 03:46:56,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:46:56,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:56,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:46:56,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:46:56,169 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:46:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:46:56,651 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:46:56,770 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 03:46:56,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:46:56,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:46:56,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:46:56,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:46:56,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:46:56,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:46:56,802 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 03:47:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:47:03,973 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 03:47:03,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:47:03,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-27 03:47:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:47:04,011 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 03:47:04,012 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 03:47:04,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:47:04,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 03:47:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 03:47:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 03:47:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-27 03:47:04,215 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 40 [2018-10-27 03:47:04,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:47:04,216 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-27 03:47:04,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:47:04,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-27 03:47:04,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-27 03:47:04,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:47:04,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:47:04,238 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:47:04,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:47:04,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1815461261, now seen corresponding path program 1 times [2018-10-27 03:47:04,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:47:04,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:04,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:47:04,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:04,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:47:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:47:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:47:04,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:47:04,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:47:04,616 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:47:04,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:47:04,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:47:04,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:47:04,619 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-10-27 03:47:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:47:19,095 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-10-27 03:47:19,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:47:19,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-27 03:47:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:47:19,117 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 03:47:19,117 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 03:47:19,123 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 03:47:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 03:47:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-10-27 03:47:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-27 03:47:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-10-27 03:47:19,221 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 129 [2018-10-27 03:47:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:47:19,222 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-10-27 03:47:19,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:47:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-10-27 03:47:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-27 03:47:19,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:47:19,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:47:19,230 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:47:19,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:47:19,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1289606006, now seen corresponding path program 1 times [2018-10-27 03:47:19,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:47:19,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:19,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:47:19,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:19,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:47:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:47:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:47:19,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:47:19,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:47:19,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:47:19,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:47:19,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:47:19,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:47:19,600 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-10-27 03:47:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:47:30,357 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-10-27 03:47:30,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:47:30,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-10-27 03:47:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:47:30,409 INFO L225 Difference]: With dead ends: 10194 [2018-10-27 03:47:30,409 INFO L226 Difference]: Without dead ends: 7272 [2018-10-27 03:47:30,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:47:30,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-10-27 03:47:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-10-27 03:47:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-10-27 03:47:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-10-27 03:47:30,661 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 176 [2018-10-27 03:47:30,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:47:30,662 INFO L481 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-10-27 03:47:30,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:47:30,662 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-10-27 03:47:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-27 03:47:30,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:47:30,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:47:30,668 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:47:30,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:47:30,670 INFO L82 PathProgramCache]: Analyzing trace with hash -680969838, now seen corresponding path program 1 times [2018-10-27 03:47:30,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:47:30,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:30,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:47:30,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:30,671 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:47:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:47:31,026 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:47:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:47:31,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:47:31,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:47:31,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:47:31,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:47:31,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:47:31,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:47:31,443 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-10-27 03:47:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:47:37,295 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-10-27 03:47:37,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:47:37,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-10-27 03:47:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:47:37,347 INFO L225 Difference]: With dead ends: 17365 [2018-10-27 03:47:37,347 INFO L226 Difference]: Without dead ends: 10163 [2018-10-27 03:47:37,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:47:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-10-27 03:47:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-10-27 03:47:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-10-27 03:47:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-10-27 03:47:37,638 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 178 [2018-10-27 03:47:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:47:37,639 INFO L481 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-10-27 03:47:37,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:47:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-10-27 03:47:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 03:47:37,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:47:37,647 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:47:37,648 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:47:37,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:47:37,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1490762096, now seen corresponding path program 1 times [2018-10-27 03:47:37,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:47:37,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:37,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:47:37,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:37,651 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:47:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:47:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-27 03:47:37,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:47:37,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:47:37,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:47:37,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:47:37,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:47:37,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:47:37,916 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-10-27 03:47:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:47:45,642 INFO L93 Difference]: Finished difference Result 28819 states and 41884 transitions. [2018-10-27 03:47:45,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:47:45,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2018-10-27 03:47:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:47:45,710 INFO L225 Difference]: With dead ends: 28819 [2018-10-27 03:47:45,710 INFO L226 Difference]: Without dead ends: 18717 [2018-10-27 03:47:45,760 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 03:47:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18717 states. [2018-10-27 03:47:46,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18717 to 18717. [2018-10-27 03:47:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18717 states. [2018-10-27 03:47:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 26000 transitions. [2018-10-27 03:47:46,161 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 26000 transitions. Word has length 236 [2018-10-27 03:47:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:47:46,161 INFO L481 AbstractCegarLoop]: Abstraction has 18717 states and 26000 transitions. [2018-10-27 03:47:46,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:47:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 26000 transitions. [2018-10-27 03:47:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-27 03:47:46,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:47:46,200 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:47:46,200 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:47:46,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:47:46,200 INFO L82 PathProgramCache]: Analyzing trace with hash -205377436, now seen corresponding path program 1 times [2018-10-27 03:47:46,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:47:46,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:46,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:47:46,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:47:46,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:47:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:47:46,519 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:47:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 66 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:47:46,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:47:46,711 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:47:46,713 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 391 with the following transitions: [2018-10-27 03:47:46,716 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1843], [1845], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:47:46,800 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:47:46,800 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:47:54,149 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:47:54,151 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:47:54,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:47:54,198 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:47:57,289 INFO L227 lantSequenceWeakener]: Weakened 382 states. On average, predicates are now at 77.59% of their original sizes. [2018-10-27 03:47:57,290 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:47:57,930 INFO L415 sIntCurrentIteration]: We unified 389 AI predicates to 389 [2018-10-27 03:47:57,930 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:47:57,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:47:57,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-27 03:47:57,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:47:57,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 03:47:57,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 03:47:57,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:47:57,934 INFO L87 Difference]: Start difference. First operand 18717 states and 26000 transitions. Second operand 8 states. [2018-10-27 03:48:03,726 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:50:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:50:09,118 INFO L93 Difference]: Finished difference Result 38133 states and 52855 transitions. [2018-10-27 03:50:09,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:50:09,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 390 [2018-10-27 03:50:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:50:09,181 INFO L225 Difference]: With dead ends: 38133 [2018-10-27 03:50:09,181 INFO L226 Difference]: Without dead ends: 19422 [2018-10-27 03:50:09,228 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 391 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:50:09,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19422 states. [2018-10-27 03:50:09,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19422 to 19420. [2018-10-27 03:50:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19420 states. [2018-10-27 03:50:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19420 states to 19420 states and 26715 transitions. [2018-10-27 03:50:09,575 INFO L78 Accepts]: Start accepts. Automaton has 19420 states and 26715 transitions. Word has length 390 [2018-10-27 03:50:09,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:50:09,575 INFO L481 AbstractCegarLoop]: Abstraction has 19420 states and 26715 transitions. [2018-10-27 03:50:09,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 03:50:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 19420 states and 26715 transitions. [2018-10-27 03:50:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-10-27 03:50:09,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:50:09,620 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:50:09,620 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:50:09,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:50:09,621 INFO L82 PathProgramCache]: Analyzing trace with hash 750847463, now seen corresponding path program 1 times [2018-10-27 03:50:09,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:50:09,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:50:09,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:50:09,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:50:09,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:50:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:50:10,377 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:50:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:50:10,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:50:10,905 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:50:10,905 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 578 with the following transitions: [2018-10-27 03:50:10,906 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1843], [1845], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:50:10,923 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:50:10,923 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 03:50:24,299 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 03:50:24,300 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 03:50:24,302 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 03:50:24,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:50:24,302 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 03:50:24,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:50:24,312 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:50:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:50:24,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:50:24,550 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 03:50:24,751 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:50:24,752 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:50:24,757 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:50:24,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:50:24 BoogieIcfgContainer [2018-10-27 03:50:24,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:50:24,759 INFO L168 Benchmark]: Toolchain (without parser) took 219579.89 ms. Allocated memory was 1.6 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -189.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 03:50:24,760 INFO L168 Benchmark]: CDTParser took 0.22 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 03:50:24,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1845.00 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:50:24,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 393.45 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 788.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -966.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:50:24,762 INFO L168 Benchmark]: Boogie Preprocessor took 227.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:50:24,763 INFO L168 Benchmark]: RCFGBuilder took 8292.70 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: 497.3 MB). Peak memory consumption was 497.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:50:24,764 INFO L168 Benchmark]: TraceAbstraction took 208811.73 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 1.6 GB in the end (delta: 117.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-27 03:50:24,771 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1845.00 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 393.45 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 788.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -966.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 227.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8292.70 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: 497.3 MB). Peak memory consumption was 497.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208811.73 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 1.6 GB in the end (delta: 117.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was analyzing trace of length 578 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 208.7s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 177.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1467 SDtfs, 11902 SDslu, 979 SDs, 0 SdLazy, 23837 SolverSat, 6594 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 122.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 431 GetRequests, 394 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19420occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.8s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9974060206400652 AbsIntWeakeningRatio, 0.06683804627249357 AbsIntAvgWeakeningVarsNumRemoved, 909.2107969151671 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 144 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1149 NumberOfCodeBlocks, 1149 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1143 ConstructedInterpolants, 0 QuantifiedInterpolants, 674947 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 325/392 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown