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/Problem14_label08_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:28:44,628 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:28:44,630 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:28:44,642 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:28:44,642 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:28:44,644 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:28:44,645 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:28:44,647 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:28:44,648 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:28:44,649 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:28:44,650 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:28:44,651 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:28:44,652 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:28:44,653 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:28:44,654 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:28:44,655 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:28:44,656 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:28:44,658 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:28:44,662 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:28:44,667 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:28:44,668 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:28:44,669 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:28:44,672 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:28:44,672 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:28:44,672 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:28:44,673 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:28:44,674 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:28:44,675 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:28:44,676 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:28:44,677 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:28:44,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:28:44,678 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:28:44,678 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:28:44,679 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:28:44,680 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:28:44,680 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:28:44,681 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 18:28:44,696 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:28:44,696 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:28:44,697 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:28:44,697 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:28:44,697 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:28:44,697 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:28:44,698 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:28:44,698 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:28:44,698 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:28:44,698 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:28:44,698 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:28:44,698 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:28:44,699 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:28:44,699 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:28:44,700 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:28:44,700 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:28:44,700 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:28:44,700 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:28:44,700 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:28:44,700 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:28:44,701 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:28:44,701 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:28:44,701 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:28:44,701 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:28:44,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:28:44,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:28:44,702 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:28:44,702 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:28:44,702 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:28:44,702 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:28:44,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:28:44,703 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:28:44,703 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:28:44,703 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:28:44,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:28:44,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:28:44,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:28:44,774 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:28:44,775 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:28:44,775 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label08_false-unreach-call_false-termination.c [2018-10-24 18:28:44,831 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f41a41dab/73b630eea8f14eef97a93acce33aac97/FLAG20abefbb9 [2018-10-24 18:28:45,386 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:28:45,387 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label08_false-unreach-call_false-termination.c [2018-10-24 18:28:45,408 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f41a41dab/73b630eea8f14eef97a93acce33aac97/FLAG20abefbb9 [2018-10-24 18:28:45,430 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f41a41dab/73b630eea8f14eef97a93acce33aac97 [2018-10-24 18:28:45,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:28:45,449 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:28:45,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:28:45,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:28:45,457 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:28:45,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:28:45" (1/1) ... [2018-10-24 18:28:45,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570fd3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:45, skipping insertion in model container [2018-10-24 18:28:45,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:28:45" (1/1) ... [2018-10-24 18:28:45,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:28:45,554 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:28:46,108 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:28:46,113 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:28:46,258 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:28:46,275 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:28:46,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46 WrapperNode [2018-10-24 18:28:46,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:28:46,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:28:46,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:28:46,278 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:28:46,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (1/1) ... [2018-10-24 18:28:46,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (1/1) ... [2018-10-24 18:28:46,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:28:46,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:28:46,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:28:46,511 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:28:46,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (1/1) ... [2018-10-24 18:28:46,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (1/1) ... [2018-10-24 18:28:46,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (1/1) ... [2018-10-24 18:28:46,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (1/1) ... [2018-10-24 18:28:46,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (1/1) ... [2018-10-24 18:28:46,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (1/1) ... [2018-10-24 18:28:46,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (1/1) ... [2018-10-24 18:28:46,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:28:46,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:28:46,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:28:46,628 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:28:46,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (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 18:28:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:28:46,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:28:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:28:46,698 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:28:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:28:46,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:28:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:28:46,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:28:50,150 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:28:50,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:28:50 BoogieIcfgContainer [2018-10-24 18:28:50,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:28:50,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:28:50,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:28:50,156 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:28:50,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:28:45" (1/3) ... [2018-10-24 18:28:50,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa21274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:28:50, skipping insertion in model container [2018-10-24 18:28:50,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:46" (2/3) ... [2018-10-24 18:28:50,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa21274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:28:50, skipping insertion in model container [2018-10-24 18:28:50,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:28:50" (3/3) ... [2018-10-24 18:28:50,162 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label08_false-unreach-call_false-termination.c [2018-10-24 18:28:50,172 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:28:50,180 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:28:50,199 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:28:50,239 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:28:50,239 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:28:50,240 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:28:50,240 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:28:50,240 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:28:50,240 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:28:50,240 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:28:50,241 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:28:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:28:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-24 18:28:50,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:28:50,279 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:28:50,281 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:28:50,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:28:50,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1967865695, now seen corresponding path program 1 times [2018-10-24 18:28:50,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:28:50,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:50,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:28:50,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:50,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:28:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:28:50,708 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:28:50,727 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 18:28:50,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:28:50,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:28:50,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:28:50,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:28:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:28:50,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:28:50,749 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 18:28:52,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:28:52,609 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 18:28:52,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:28:52,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-24 18:28:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:28:52,635 INFO L225 Difference]: With dead ends: 691 [2018-10-24 18:28:52,636 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 18:28:52,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:28:52,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 18:28:52,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 18:28:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 18:28:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 18:28:52,763 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 19 [2018-10-24 18:28:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:28:52,764 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 18:28:52,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:28:52,764 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 18:28:52,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-24 18:28:52,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:28:52,774 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:28:52,774 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:28:52,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:28:52,776 INFO L82 PathProgramCache]: Analyzing trace with hash 996215900, now seen corresponding path program 1 times [2018-10-24 18:28:52,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:28:52,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:52,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:28:52,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:52,780 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:28:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:28:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:28:53,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:28:53,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:28:53,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:28:53,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:28:53,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:28:53,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:28:53,187 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 18:28:56,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:28:56,989 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-10-24 18:28:56,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:28:56,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-10-24 18:28:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:28:57,007 INFO L225 Difference]: With dead ends: 1588 [2018-10-24 18:28:57,007 INFO L226 Difference]: Without dead ends: 1160 [2018-10-24 18:28:57,013 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 [2018-10-24 18:28:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-10-24 18:28:57,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-10-24 18:28:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-24 18:28:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-10-24 18:28:57,076 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 89 [2018-10-24 18:28:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:28:57,077 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-10-24 18:28:57,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:28:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-10-24 18:28:57,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-24 18:28:57,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:28:57,081 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:28:57,081 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:28:57,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:28:57,082 INFO L82 PathProgramCache]: Analyzing trace with hash 443394711, now seen corresponding path program 1 times [2018-10-24 18:28:57,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:28:57,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:57,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:28:57,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:57,083 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:28:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:28:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:28:57,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:28:57,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:28:57,241 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:28:57,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:28:57,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:28:57,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:28:57,242 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-10-24 18:28:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:28:59,679 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-10-24 18:28:59,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:28:59,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-10-24 18:28:59,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:28:59,700 INFO L225 Difference]: With dead ends: 2716 [2018-10-24 18:28:59,700 INFO L226 Difference]: Without dead ends: 1569 [2018-10-24 18:28:59,707 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 18:28:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-10-24 18:28:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-10-24 18:28:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-10-24 18:28:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-10-24 18:28:59,779 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 90 [2018-10-24 18:28:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:28:59,780 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-10-24 18:28:59,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:28:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-10-24 18:28:59,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 18:28:59,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:28:59,785 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:28:59,785 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:28:59,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:28:59,785 INFO L82 PathProgramCache]: Analyzing trace with hash 48842683, now seen corresponding path program 1 times [2018-10-24 18:28:59,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:28:59,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:59,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:28:59,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:59,787 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:28:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:28:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:28:59,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:28:59,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:28:59,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:28:59,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:28:59,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:28:59,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:28:59,976 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-10-24 18:29:02,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:02,510 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-10-24 18:29:02,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:29:02,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2018-10-24 18:29:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:02,534 INFO L225 Difference]: With dead ends: 4906 [2018-10-24 18:29:02,534 INFO L226 Difference]: Without dead ends: 3374 [2018-10-24 18:29:02,547 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 18:29:02,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-10-24 18:29:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-10-24 18:29:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-10-24 18:29:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-10-24 18:29:02,663 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 92 [2018-10-24 18:29:02,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:02,664 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-10-24 18:29:02,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:29:02,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-10-24 18:29:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 18:29:02,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:02,674 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:02,674 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:02,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:02,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1675787813, now seen corresponding path program 1 times [2018-10-24 18:29:02,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:02,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:02,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:02,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:02,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 18:29:02,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:02,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:29:02,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:02,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:29:02,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:29:02,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:29:02,916 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 4 states. [2018-10-24 18:29:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:05,278 INFO L93 Difference]: Finished difference Result 8796 states and 12469 transitions. [2018-10-24 18:29:05,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:29:05,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-10-24 18:29:05,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:05,311 INFO L225 Difference]: With dead ends: 8796 [2018-10-24 18:29:05,312 INFO L226 Difference]: Without dead ends: 5539 [2018-10-24 18:29:05,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:29:05,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2018-10-24 18:29:05,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5539. [2018-10-24 18:29:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5539 states. [2018-10-24 18:29:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 7494 transitions. [2018-10-24 18:29:05,484 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 7494 transitions. Word has length 177 [2018-10-24 18:29:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:05,484 INFO L481 AbstractCegarLoop]: Abstraction has 5539 states and 7494 transitions. [2018-10-24 18:29:05,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:29:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 7494 transitions. [2018-10-24 18:29:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-24 18:29:05,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:05,498 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:05,498 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:05,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2080310447, now seen corresponding path program 1 times [2018-10-24 18:29:05,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:05,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:05,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:05,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:05,500 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-24 18:29:05,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:05,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:29:05,741 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:05,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:29:05,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:29:05,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:05,742 INFO L87 Difference]: Start difference. First operand 5539 states and 7494 transitions. Second operand 3 states. [2018-10-24 18:29:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:07,283 INFO L93 Difference]: Finished difference Result 12598 states and 17780 transitions. [2018-10-24 18:29:07,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:29:07,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2018-10-24 18:29:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:07,326 INFO L225 Difference]: With dead ends: 12598 [2018-10-24 18:29:07,327 INFO L226 Difference]: Without dead ends: 7065 [2018-10-24 18:29:07,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7065 states. [2018-10-24 18:29:07,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7065 to 7060. [2018-10-24 18:29:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7060 states. [2018-10-24 18:29:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 9592 transitions. [2018-10-24 18:29:07,547 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 9592 transitions. Word has length 237 [2018-10-24 18:29:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:07,548 INFO L481 AbstractCegarLoop]: Abstraction has 7060 states and 9592 transitions. [2018-10-24 18:29:07,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:29:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 9592 transitions. [2018-10-24 18:29:07,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-24 18:29:07,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:07,566 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 18:29:07,567 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:07,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:07,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1716679298, now seen corresponding path program 1 times [2018-10-24 18:29:07,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:07,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:07,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:07,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:07,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:08,216 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-24 18:29:08,858 WARN L179 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-10-24 18:29:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:09,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:29:09,489 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:29:09,490 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-24 18:29:09,492 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [734], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:29:09,571 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:29:09,571 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:29:12,405 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:29:16,137 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:29:16,138 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:29:16,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:16,179 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:29:19,135 INFO L232 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 77.37% of their original sizes. [2018-10-24 18:29:19,135 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:29:19,581 INFO L413 sIntCurrentIteration]: We have 261 unified AI predicates [2018-10-24 18:29:19,583 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:29:19,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:29:19,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-24 18:29:19,584 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:19,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:29:19,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:29:19,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:29:19,585 INFO L87 Difference]: Start difference. First operand 7060 states and 9592 transitions. Second operand 7 states. [2018-10-24 18:29:34,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:34,996 INFO L93 Difference]: Finished difference Result 14299 states and 19408 transitions. [2018-10-24 18:29:34,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:29:34,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2018-10-24 18:29:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:35,038 INFO L225 Difference]: With dead ends: 14299 [2018-10-24 18:29:35,045 INFO L226 Difference]: Without dead ends: 7245 [2018-10-24 18:29:35,080 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:29:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2018-10-24 18:29:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 7243. [2018-10-24 18:29:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7243 states. [2018-10-24 18:29:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7243 states to 7243 states and 9783 transitions. [2018-10-24 18:29:35,285 INFO L78 Accepts]: Start accepts. Automaton has 7243 states and 9783 transitions. Word has length 262 [2018-10-24 18:29:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:35,286 INFO L481 AbstractCegarLoop]: Abstraction has 7243 states and 9783 transitions. [2018-10-24 18:29:35,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:29:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7243 states and 9783 transitions. [2018-10-24 18:29:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-24 18:29:35,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:35,306 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-10-24 18:29:35,306 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:35,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1519194548, now seen corresponding path program 1 times [2018-10-24 18:29:35,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:35,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:35,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:35,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:35,308 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:35,798 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:29:35,988 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 18:29:36,204 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:29:36,731 WARN L179 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-24 18:29:36,943 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-24 18:29:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 124 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:29:37,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:29:37,515 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:29:37,516 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-10-24 18:29:37,516 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [734], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:29:37,523 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:29:37,523 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:29:40,225 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:29:50,139 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:29:50,139 INFO L272 AbstractInterpreter]: Visited 139 different actions 271 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:29:50,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:50,148 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:29:54,100 INFO L232 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 77.59% of their original sizes. [2018-10-24 18:29:54,101 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:30:17,224 INFO L413 sIntCurrentIteration]: We have 346 unified AI predicates [2018-10-24 18:30:17,225 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:30:17,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:30:17,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-10-24 18:30:17,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:30:17,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 18:30:17,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 18:30:17,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-10-24 18:30:17,227 INFO L87 Difference]: Start difference. First operand 7243 states and 9783 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 18:32:41,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 18:32:41,374 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:32:41,379 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:32:41,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:32:41 BoogieIcfgContainer [2018-10-24 18:32:41,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:32:41,380 INFO L168 Benchmark]: Toolchain (without parser) took 235933.23 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 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 196.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:41,381 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 18:32:41,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 826.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:41,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 233.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:41,383 INFO L168 Benchmark]: Boogie Preprocessor took 116.62 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:41,384 INFO L168 Benchmark]: RCFGBuilder took 3523.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.7 MB). Peak memory consumption was 116.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:41,385 INFO L168 Benchmark]: TraceAbstraction took 231226.78 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:41,390 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 826.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 233.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.62 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3523.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.7 MB). Peak memory consumption was 116.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231226.78 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was constructing difference of abstraction (7243states) and FLOYD_HOARE automaton (currently 23 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (2678 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 231.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 174.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1220 SDtfs, 6084 SDslu, 669 SDs, 0 SdLazy, 8112 SolverSat, 1694 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 658 GetRequests, 579 SyntacticMatches, 25 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 26.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7243occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995973903493064 AbsIntWeakeningRatio, 0.09555189456342669 AbsIntAvgWeakeningVarsNumRemoved, 443.83525535420097 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 156 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1313 NumberOfCodeBlocks, 1313 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1305 ConstructedInterpolants, 0 QuantifiedInterpolants, 3335457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 527/719 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown