java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:46:51,620 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:46:51,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:46:51,640 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:46:51,640 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:46:51,641 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:46:51,642 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:46:51,644 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:46:51,646 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:46:51,647 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:46:51,648 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:46:51,648 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:46:51,649 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:46:51,650 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:46:51,651 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:46:51,652 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:46:51,653 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:46:51,654 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:46:51,656 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:46:51,658 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:46:51,661 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:46:51,662 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:46:51,667 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 02:46:51,667 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 02:46:51,671 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 02:46:51,672 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 02:46:51,673 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 02:46:51,674 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 02:46:51,678 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 02:46:51,679 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 02:46:51,679 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 02:46:51,681 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 02:46:51,682 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:46:51,682 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:46:51,683 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:46:51,683 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:46:51,684 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:46:51,712 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:46:51,712 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:46:51,713 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:46:51,713 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:46:51,713 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:46:51,714 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:46:51,714 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:46:51,714 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:46:51,714 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:46:51,714 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:46:51,715 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:46:51,715 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:46:51,715 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:46:51,716 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:46:51,716 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:46:51,716 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:46:51,716 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:46:51,716 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:46:51,717 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:46:51,717 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:46:51,717 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:46:51,717 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:46:51,717 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:46:51,718 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:46:51,718 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:46:51,718 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:46:51,718 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:46:51,718 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:46:51,719 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:46:51,719 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:46:51,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:46:51,719 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:46:51,719 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:46:51,720 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:46:51,786 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:46:51,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:46:51,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:46:51,805 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:46:51,806 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:46:51,806 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30_true-unreach-call.c [2018-11-07 02:46:51,869 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ff9dd42/292f94fe1d3e441a9de9317febc61a71/FLAGbd38f14b4 [2018-11-07 02:46:52,447 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:46:52,451 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label30_true-unreach-call.c [2018-11-07 02:46:52,477 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ff9dd42/292f94fe1d3e441a9de9317febc61a71/FLAGbd38f14b4 [2018-11-07 02:46:52,502 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ff9dd42/292f94fe1d3e441a9de9317febc61a71 [2018-11-07 02:46:52,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:46:52,519 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:46:52,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:46:52,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:46:52,525 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:46:52,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:46:52" (1/1) ... [2018-11-07 02:46:52,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631d54ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:52, skipping insertion in model container [2018-11-07 02:46:52,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:46:52" (1/1) ... [2018-11-07 02:46:52,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:46:52,630 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:46:53,129 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:46:53,134 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:46:53,276 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:46:53,301 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:46:53,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53 WrapperNode [2018-11-07 02:46:53,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:46:53,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:46:53,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:46:53,305 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:46:53,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... [2018-11-07 02:46:53,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... [2018-11-07 02:46:53,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:46:53,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:46:53,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:46:53,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:46:53,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... [2018-11-07 02:46:53,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... [2018-11-07 02:46:53,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... [2018-11-07 02:46:53,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... [2018-11-07 02:46:53,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... [2018-11-07 02:46:53,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... [2018-11-07 02:46:53,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... [2018-11-07 02:46:53,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:46:53,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:46:53,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:46:53,584 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:46:53,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 02:46:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:46:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:46:53,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:46:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:46:53,681 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:46:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:46:53,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:46:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:46:53,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:46:56,708 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:46:56,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:46:56 BoogieIcfgContainer [2018-11-07 02:46:56,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:46:56,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:46:56,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:46:56,714 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:46:56,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:46:52" (1/3) ... [2018-11-07 02:46:56,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fbd5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:46:56, skipping insertion in model container [2018-11-07 02:46:56,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:46:53" (2/3) ... [2018-11-07 02:46:56,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fbd5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:46:56, skipping insertion in model container [2018-11-07 02:46:56,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:46:56" (3/3) ... [2018-11-07 02:46:56,719 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label30_true-unreach-call.c [2018-11-07 02:46:56,730 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:46:56,742 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:46:56,761 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:46:56,814 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:46:56,814 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:46:56,815 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:46:56,815 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:46:56,815 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:46:56,815 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:46:56,815 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:46:56,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:46:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 02:46:56,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 02:46:56,862 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:46:56,864 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:46:56,866 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:46:56,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:46:56,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1431628569, now seen corresponding path program 1 times [2018-11-07 02:46:56,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:46:56,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:46:56,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:46:56,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:46:56,927 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:46:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:46:57,374 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:46:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:46:57,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:46:57,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:46:57,490 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:46:57,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:46:57,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:46:57,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:46:57,517 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 02:46:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:46:59,137 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 02:46:59,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:46:59,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-07 02:46:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:46:59,159 INFO L225 Difference]: With dead ends: 574 [2018-11-07 02:46:59,159 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 02:46:59,168 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:46:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 02:46:59,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 02:46:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 02:46:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 02:46:59,257 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 41 [2018-11-07 02:46:59,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:46:59,258 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 02:46:59,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:46:59,258 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 02:46:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 02:46:59,266 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:46:59,266 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:46:59,267 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:46:59,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:46:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash -965604765, now seen corresponding path program 1 times [2018-11-07 02:46:59,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:46:59,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:46:59,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:46:59,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:46:59,269 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:46:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:46:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:46:59,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:46:59,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 02:46:59,680 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:46:59,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 02:46:59,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 02:46:59,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 02:46:59,684 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 02:47:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:47:02,322 INFO L93 Difference]: Finished difference Result 1287 states and 2312 transitions. [2018-11-07 02:47:02,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 02:47:02,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-11-07 02:47:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:47:02,334 INFO L225 Difference]: With dead ends: 1287 [2018-11-07 02:47:02,334 INFO L226 Difference]: Without dead ends: 937 [2018-11-07 02:47:02,339 INFO L604 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 [2018-11-07 02:47:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2018-11-07 02:47:02,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 924. [2018-11-07 02:47:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2018-11-07 02:47:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1441 transitions. [2018-11-07 02:47:02,417 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1441 transitions. Word has length 124 [2018-11-07 02:47:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:47:02,418 INFO L480 AbstractCegarLoop]: Abstraction has 924 states and 1441 transitions. [2018-11-07 02:47:02,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 02:47:02,418 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1441 transitions. [2018-11-07 02:47:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 02:47:02,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:47:02,425 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:47:02,425 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:47:02,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:47:02,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1367473027, now seen corresponding path program 1 times [2018-11-07 02:47:02,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:47:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:47:02,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:47:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:47:02,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:47:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:47:02,678 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:47:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:47:02,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:47:02,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:47:02,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:47:02,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:47:02,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:47:02,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:47:02,780 INFO L87 Difference]: Start difference. First operand 924 states and 1441 transitions. Second operand 6 states. [2018-11-07 02:47:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:47:06,494 INFO L93 Difference]: Finished difference Result 2533 states and 4079 transitions. [2018-11-07 02:47:06,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:47:06,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 02:47:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:47:06,506 INFO L225 Difference]: With dead ends: 2533 [2018-11-07 02:47:06,507 INFO L226 Difference]: Without dead ends: 1615 [2018-11-07 02:47:06,514 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:47:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2018-11-07 02:47:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1584. [2018-11-07 02:47:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2018-11-07 02:47:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2317 transitions. [2018-11-07 02:47:06,570 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2317 transitions. Word has length 140 [2018-11-07 02:47:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:47:06,571 INFO L480 AbstractCegarLoop]: Abstraction has 1584 states and 2317 transitions. [2018-11-07 02:47:06,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:47:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2317 transitions. [2018-11-07 02:47:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-07 02:47:06,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:47:06,577 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:47:06,577 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:47:06,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:47:06,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1368152781, now seen corresponding path program 1 times [2018-11-07 02:47:06,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:47:06,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:47:06,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:47:06,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:47:06,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:47:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:47:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:47:06,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:47:06,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:47:06,860 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:47:06,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:47:06,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:47:06,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:47:06,862 INFO L87 Difference]: Start difference. First operand 1584 states and 2317 transitions. Second operand 6 states. [2018-11-07 02:47:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:47:08,288 INFO L93 Difference]: Finished difference Result 3502 states and 5313 transitions. [2018-11-07 02:47:08,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:47:08,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-11-07 02:47:08,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:47:08,307 INFO L225 Difference]: With dead ends: 3502 [2018-11-07 02:47:08,307 INFO L226 Difference]: Without dead ends: 1924 [2018-11-07 02:47:08,314 INFO L604 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 [2018-11-07 02:47:08,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2018-11-07 02:47:08,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1885. [2018-11-07 02:47:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2018-11-07 02:47:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2678 transitions. [2018-11-07 02:47:08,375 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2678 transitions. Word has length 164 [2018-11-07 02:47:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:47:08,376 INFO L480 AbstractCegarLoop]: Abstraction has 1885 states and 2678 transitions. [2018-11-07 02:47:08,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:47:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2678 transitions. [2018-11-07 02:47:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 02:47:08,384 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:47:08,384 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:47:08,384 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:47:08,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:47:08,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1210373809, now seen corresponding path program 1 times [2018-11-07 02:47:08,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:47:08,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:47:08,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:47:08,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:47:08,386 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:47:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:47:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:47:08,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:47:08,758 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:47:08,759 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-11-07 02:47:08,762 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [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], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:47:08,833 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:47:08,833 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:47:11,153 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:47:23,713 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:47:23,714 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 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. [2018-11-07 02:47:23,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:47:23,753 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:47:26,928 INFO L227 lantSequenceWeakener]: Weakened 44 states. On average, predicates are now at 76.31% of their original sizes. [2018-11-07 02:47:26,929 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:47:32,599 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-11-07 02:47:32,599 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:47:32,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:47:32,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 02:47:32,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:47:32,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 02:47:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 02:47:32,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-11-07 02:47:32,602 INFO L87 Difference]: Start difference. First operand 1885 states and 2678 transitions. Second operand 16 states. [2018-11-07 02:49:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:49:48,684 INFO L93 Difference]: Finished difference Result 4445 states and 6400 transitions. [2018-11-07 02:49:48,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 02:49:48,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2018-11-07 02:49:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:49:48,698 INFO L225 Difference]: With dead ends: 4445 [2018-11-07 02:49:48,699 INFO L226 Difference]: Without dead ends: 2566 [2018-11-07 02:49:48,707 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 201 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-11-07 02:49:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2018-11-07 02:49:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2331. [2018-11-07 02:49:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2018-11-07 02:49:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3169 transitions. [2018-11-07 02:49:48,848 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3169 transitions. Word has length 195 [2018-11-07 02:49:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:49:48,849 INFO L480 AbstractCegarLoop]: Abstraction has 2331 states and 3169 transitions. [2018-11-07 02:49:48,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 02:49:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3169 transitions. [2018-11-07 02:49:48,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-07 02:49:48,854 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:49:48,855 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:49:48,855 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:49:48,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:49:48,856 INFO L82 PathProgramCache]: Analyzing trace with hash -443715368, now seen corresponding path program 1 times [2018-11-07 02:49:48,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:49:48,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:49:48,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:49:48,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:49:48,858 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:49:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:49:49,249 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 02:49:49,430 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 02:49:49,979 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 02:49:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:49:50,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:49:50,197 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:49:50,197 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 205 with the following transitions: [2018-11-07 02:49:50,197 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [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], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:49:50,203 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:49:50,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:49:51,655 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:50:01,693 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:50:01,693 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 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. [2018-11-07 02:50:01,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:50:01,700 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:50:04,009 INFO L227 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 78.41% of their original sizes. [2018-11-07 02:50:04,010 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:50:36,029 INFO L415 sIntCurrentIteration]: We unified 203 AI predicates to 203 [2018-11-07 02:50:36,030 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:50:36,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:50:36,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [12] total 27 [2018-11-07 02:50:36,031 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:50:36,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 02:50:36,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 02:50:36,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 02:50:36,032 INFO L87 Difference]: Start difference. First operand 2331 states and 3169 transitions. Second operand 17 states. Received shutdown request... [2018-11-07 02:50:52,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 02:50:52,051 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:50:52,057 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:50:52,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:50:52 BoogieIcfgContainer [2018-11-07 02:50:52,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:50:52,059 INFO L168 Benchmark]: Toolchain (without parser) took 239541.10 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -301.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 02:50:52,060 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. [2018-11-07 02:50:52,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.82 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 02:50:52,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 144.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -804.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-11-07 02:50:52,069 INFO L168 Benchmark]: Boogie Preprocessor took 133.66 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:50:52,070 INFO L168 Benchmark]: RCFGBuilder took 3125.59 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-07 02:50:52,070 INFO L168 Benchmark]: TraceAbstraction took 235346.80 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 1.7 GB in the end (delta: 365.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 02:50:52,083 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 783.82 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 144.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -804.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.66 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3125.59 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235346.80 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 1.7 GB in the end (delta: 365.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 106). Cancelled while BasicCegarLoop was constructing difference of abstraction (2331states) and FLOYD_HOARE automaton (currently 11 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 235.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 161.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 556 SDtfs, 3663 SDslu, 576 SDs, 0 SdLazy, 5405 SolverSat, 1192 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 446 GetRequests, 335 SyntacticMatches, 46 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 40.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2331occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9940587011280253 AbsIntWeakeningRatio, 0.1309823677581864 AbsIntAvgWeakeningVarsNumRemoved, 172.9647355163728 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 318 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 868 NumberOfCodeBlocks, 868 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 862 ConstructedInterpolants, 0 QuantifiedInterpolants, 953669 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 385/389 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown