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/Problem10_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:32:17,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:32:17,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:32:17,764 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:32:17,765 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:32:17,766 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:32:17,767 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:32:17,769 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:32:17,771 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:32:17,772 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:32:17,772 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:32:17,773 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:32:17,774 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:32:17,775 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:32:17,776 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:32:17,777 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:32:17,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:32:17,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:32:17,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:32:17,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:32:17,785 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:32:17,786 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:32:17,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:32:17,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:32:17,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:32:17,790 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:32:17,792 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:32:17,792 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:32:17,793 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:32:17,795 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:32:17,795 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:32:17,796 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:32:17,796 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:32:17,796 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:32:17,797 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:32:17,798 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:32:17,799 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 [2018-10-26 23:32:17,814 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:32:17,815 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:32:17,816 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:32:17,816 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:32:17,816 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:32:17,817 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:32:17,817 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:32:17,817 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:32:17,817 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:32:17,818 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:32:17,818 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:32:17,818 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:32:17,819 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:32:17,819 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:32:17,820 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:32:17,820 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:32:17,820 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:32:17,820 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:32:17,821 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:32:17,821 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:32:17,821 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:32:17,821 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:32:17,821 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:32:17,822 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:32:17,822 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:32:17,822 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:32:17,822 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:32:17,823 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:32:17,823 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:32:17,823 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:32:17,823 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:32:17,824 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:32:17,824 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:32:17,824 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:32:17,888 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:32:17,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:32:17,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:32:17,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:32:17,914 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:32:17,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label50_false-unreach-call.c [2018-10-26 23:32:17,982 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9d6453df/4dbb6a65d1144411a4e9b1b394718d06/FLAG09facd261 [2018-10-26 23:32:18,619 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:32:18,620 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label50_false-unreach-call.c [2018-10-26 23:32:18,637 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9d6453df/4dbb6a65d1144411a4e9b1b394718d06/FLAG09facd261 [2018-10-26 23:32:18,660 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9d6453df/4dbb6a65d1144411a4e9b1b394718d06 [2018-10-26 23:32:18,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:32:18,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:32:18,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:32:18,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:32:18,680 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:32:18,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:32:18" (1/1) ... [2018-10-26 23:32:18,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309cd1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:18, skipping insertion in model container [2018-10-26 23:32:18,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:32:18" (1/1) ... [2018-10-26 23:32:18,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:32:18,780 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:32:19,244 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:32:19,249 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:32:19,363 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:32:19,383 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:32:19,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19 WrapperNode [2018-10-26 23:32:19,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:32:19,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:32:19,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:32:19,386 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:32:19,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (1/1) ... [2018-10-26 23:32:19,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (1/1) ... [2018-10-26 23:32:19,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:32:19,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:32:19,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:32:19,620 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:32:19,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (1/1) ... [2018-10-26 23:32:19,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (1/1) ... [2018-10-26 23:32:19,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (1/1) ... [2018-10-26 23:32:19,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (1/1) ... [2018-10-26 23:32:19,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (1/1) ... [2018-10-26 23:32:19,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (1/1) ... [2018-10-26 23:32:19,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (1/1) ... [2018-10-26 23:32:19,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:32:19,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:32:19,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:32:19,748 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:32:19,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (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 [2018-10-26 23:32:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:32:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:32:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:32:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:32:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:32:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:32:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:32:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:32:23,177 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:32:23,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:32:23 BoogieIcfgContainer [2018-10-26 23:32:23,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:32:23,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:32:23,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:32:23,183 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:32:23,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:32:18" (1/3) ... [2018-10-26 23:32:23,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75752535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:32:23, skipping insertion in model container [2018-10-26 23:32:23,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:19" (2/3) ... [2018-10-26 23:32:23,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75752535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:32:23, skipping insertion in model container [2018-10-26 23:32:23,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:32:23" (3/3) ... [2018-10-26 23:32:23,187 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label50_false-unreach-call.c [2018-10-26 23:32:23,195 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:32:23,205 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:32:23,223 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:32:23,264 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:32:23,265 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:32:23,265 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:32:23,265 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:32:23,265 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:32:23,266 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:32:23,266 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:32:23,266 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:32:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-26 23:32:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:32:23,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:23,306 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:32:23,309 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:23,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:23,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1440940844, now seen corresponding path program 1 times [2018-10-26 23:32:23,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:23,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:23,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:23,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:23,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:23,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:23,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:32:23,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:23,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:32:23,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:32:23,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:32:23,652 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-26 23:32:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:25,486 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-26 23:32:25,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:32:25,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-26 23:32:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:25,508 INFO L225 Difference]: With dead ends: 574 [2018-10-26 23:32:25,508 INFO L226 Difference]: Without dead ends: 356 [2018-10-26 23:32:25,517 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 [2018-10-26 23:32:25,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-26 23:32:25,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-26 23:32:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-26 23:32:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-26 23:32:25,598 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 16 [2018-10-26 23:32:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:25,599 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-26 23:32:25,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:32:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-26 23:32:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-26 23:32:25,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:25,605 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:32:25,605 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:25,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:25,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2043467860, now seen corresponding path program 1 times [2018-10-26 23:32:25,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:25,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:25,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:25,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:25,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:26,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:26,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:32:26,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:26,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:32:26,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:32:26,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:32:26,004 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 6 states. [2018-10-26 23:32:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:27,897 INFO L93 Difference]: Finished difference Result 867 states and 1507 transitions. [2018-10-26 23:32:27,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:32:27,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-10-26 23:32:27,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:27,903 INFO L225 Difference]: With dead ends: 867 [2018-10-26 23:32:27,904 INFO L226 Difference]: Without dead ends: 517 [2018-10-26 23:32:27,907 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 [2018-10-26 23:32:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-10-26 23:32:27,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 508. [2018-10-26 23:32:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-10-26 23:32:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 831 transitions. [2018-10-26 23:32:27,950 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 831 transitions. Word has length 90 [2018-10-26 23:32:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:27,951 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 831 transitions. [2018-10-26 23:32:27,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:32:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 831 transitions. [2018-10-26 23:32:27,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-26 23:32:27,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:27,955 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:32:27,955 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:27,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:27,956 INFO L82 PathProgramCache]: Analyzing trace with hash -663284288, now seen corresponding path program 1 times [2018-10-26 23:32:27,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:27,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:27,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:27,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:27,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:28,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:28,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:32:28,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:28,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:32:28,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:32:28,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:32:28,206 INFO L87 Difference]: Start difference. First operand 508 states and 831 transitions. Second operand 4 states. [2018-10-26 23:32:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:30,515 INFO L93 Difference]: Finished difference Result 1742 states and 2991 transitions. [2018-10-26 23:32:30,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:32:30,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2018-10-26 23:32:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:30,530 INFO L225 Difference]: With dead ends: 1742 [2018-10-26 23:32:30,530 INFO L226 Difference]: Without dead ends: 1240 [2018-10-26 23:32:30,584 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 [2018-10-26 23:32:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2018-10-26 23:32:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2018-10-26 23:32:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2018-10-26 23:32:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1869 transitions. [2018-10-26 23:32:30,663 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1869 transitions. Word has length 96 [2018-10-26 23:32:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:30,665 INFO L481 AbstractCegarLoop]: Abstraction has 1240 states and 1869 transitions. [2018-10-26 23:32:30,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:32:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1869 transitions. [2018-10-26 23:32:30,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-26 23:32:30,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:30,682 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:32:30,682 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:30,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:30,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2144106089, now seen corresponding path program 1 times [2018-10-26 23:32:30,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:30,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:30,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:30,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:30,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:30,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:30,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:32:30,956 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:30,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:32:30,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:32:30,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:32:30,957 INFO L87 Difference]: Start difference. First operand 1240 states and 1869 transitions. Second operand 6 states. [2018-10-26 23:32:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:33,676 INFO L93 Difference]: Finished difference Result 2759 states and 4120 transitions. [2018-10-26 23:32:33,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:32:33,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-26 23:32:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:33,689 INFO L225 Difference]: With dead ends: 2759 [2018-10-26 23:32:33,689 INFO L226 Difference]: Without dead ends: 1525 [2018-10-26 23:32:33,697 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 [2018-10-26 23:32:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2018-10-26 23:32:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1485. [2018-10-26 23:32:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-26 23:32:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2034 transitions. [2018-10-26 23:32:33,744 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2034 transitions. Word has length 153 [2018-10-26 23:32:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:33,744 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2034 transitions. [2018-10-26 23:32:33,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:32:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2034 transitions. [2018-10-26 23:32:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-26 23:32:33,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:33,749 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:32:33,749 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:33,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:33,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1320283371, now seen corresponding path program 1 times [2018-10-26 23:32:33,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:33,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:33,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:33,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:33,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:33,994 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:32:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:34,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:34,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:32:34,058 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:34,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:32:34,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:32:34,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:32:34,059 INFO L87 Difference]: Start difference. First operand 1485 states and 2034 transitions. Second operand 6 states. [2018-10-26 23:32:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:35,510 INFO L93 Difference]: Finished difference Result 3547 states and 5008 transitions. [2018-10-26 23:32:35,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:32:35,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-10-26 23:32:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:35,523 INFO L225 Difference]: With dead ends: 3547 [2018-10-26 23:32:35,523 INFO L226 Difference]: Without dead ends: 2068 [2018-10-26 23:32:35,531 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 [2018-10-26 23:32:35,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2018-10-26 23:32:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2051. [2018-10-26 23:32:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2018-10-26 23:32:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2708 transitions. [2018-10-26 23:32:35,588 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2708 transitions. Word has length 159 [2018-10-26 23:32:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:35,588 INFO L481 AbstractCegarLoop]: Abstraction has 2051 states and 2708 transitions. [2018-10-26 23:32:35,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:32:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2708 transitions. [2018-10-26 23:32:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-26 23:32:35,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:35,597 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:32:35,597 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:35,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:35,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1348361603, now seen corresponding path program 1 times [2018-10-26 23:32:35,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:35,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:35,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:35,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:35,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:35,940 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:32:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-26 23:32:36,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:32:36,081 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:32:36,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-26 23:32:36,085 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [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], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:32:36,160 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:32:36,160 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:32:38,482 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:33:04,130 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:33:04,132 INFO L272 AbstractInterpreter]: Visited 145 different actions 840 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:33:04,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:33:04,152 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:33:07,573 INFO L227 lantSequenceWeakener]: Weakened 72 states. On average, predicates are now at 73.49% of their original sizes. [2018-10-26 23:33:07,573 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:33:36,242 INFO L415 sIntCurrentIteration]: We unified 232 AI predicates to 232 [2018-10-26 23:33:36,243 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:33:36,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:33:36,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [8] total 33 [2018-10-26 23:33:36,244 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:33:36,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-26 23:33:36,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-26 23:33:36,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2018-10-26 23:33:36,246 INFO L87 Difference]: Start difference. First operand 2051 states and 2708 transitions. Second operand 27 states. Received shutdown request... [2018-10-26 23:36:19,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-26 23:36:19,514 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:36:19,520 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:36:19,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:36:19 BoogieIcfgContainer [2018-10-26 23:36:19,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:36:19,521 INFO L168 Benchmark]: Toolchain (without parser) took 240848.44 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 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-26 23:36:19,523 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. [2018-10-26 23:36:19,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.47 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:36:19,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 234.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-26 23:36:19,525 INFO L168 Benchmark]: Boogie Preprocessor took 127.51 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-26 23:36:19,526 INFO L168 Benchmark]: RCFGBuilder took 3430.47 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: 118.3 MB). Peak memory consumption was 118.3 MB. Max. memory is 7.1 GB. [2018-10-26 23:36:19,527 INFO L168 Benchmark]: TraceAbstraction took 236341.57 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 2.6 GB in the end (delta: -570.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 23:36:19,536 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 709.47 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 234.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.51 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3430.47 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: 118.3 MB). Peak memory consumption was 118.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236341.57 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 2.6 GB in the end (delta: -570.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 31). Cancelled while BasicCegarLoop was constructing difference of abstraction (2051states) and FLOYD_HOARE automaton (currently 32 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (2950 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 236.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 173.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 590 SDtfs, 5904 SDslu, 688 SDs, 0 SdLazy, 6111 SolverSat, 1042 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 285 GetRequests, 186 SyntacticMatches, 37 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 33.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2051occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 28.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9949166041979014 AbsIntWeakeningRatio, 0.11206896551724138 AbsIntAvgWeakeningVarsNumRemoved, 394.83620689655174 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 66 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 747 NumberOfCodeBlocks, 747 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 741 ConstructedInterpolants, 0 QuantifiedInterpolants, 626574 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 128/134 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown