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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:40:52,614 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:40:52,616 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:40:52,630 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:40:52,630 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:40:52,631 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:40:52,633 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:40:52,635 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:40:52,636 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:40:52,637 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:40:52,638 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:40:52,638 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:40:52,639 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:40:52,640 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:40:52,641 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:40:52,642 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:40:52,643 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:40:52,644 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:40:52,646 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:40:52,648 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:40:52,649 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:40:52,650 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:40:52,653 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:40:52,653 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:40:52,653 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:40:52,654 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:40:52,655 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:40:52,656 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:40:52,657 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:40:52,658 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:40:52,658 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:40:52,659 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:40:52,659 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:40:52,660 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:40:52,660 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:40:52,661 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:40:52,661 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 18:40:52,677 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:40:52,677 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:40:52,678 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:40:52,678 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:40:52,679 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:40:52,679 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:40:52,679 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:40:52,679 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:40:52,679 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:40:52,680 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:40:52,680 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:40:52,680 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:40:52,680 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:40:52,682 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:40:52,682 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:40:52,682 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:40:52,683 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:40:52,683 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:40:52,683 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:40:52,683 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:40:52,683 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:40:52,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:40:52,685 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:40:52,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:40:52,686 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:40:52,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:40:52,686 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:40:52,686 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:40:52,686 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:40:52,687 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:40:52,687 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:40:52,687 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:40:52,687 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:40:52,687 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:40:52,688 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:40:52,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:40:52,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:40:52,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:40:52,777 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:40:52,777 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:40:52,778 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-11-12 18:40:52,843 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f2bd0f0/b253181c46684b919d1d4a92087bab1b/FLAGfba51880d [2018-11-12 18:40:53,466 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:40:53,466 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-11-12 18:40:53,493 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f2bd0f0/b253181c46684b919d1d4a92087bab1b/FLAGfba51880d [2018-11-12 18:40:53,515 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f2bd0f0/b253181c46684b919d1d4a92087bab1b [2018-11-12 18:40:53,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:40:53,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:40:53,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:40:53,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:40:53,534 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:40:53,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:40:53" (1/1) ... [2018-11-12 18:40:53,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43256e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:53, skipping insertion in model container [2018-11-12 18:40:53,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:40:53" (1/1) ... [2018-11-12 18:40:53,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:40:53,628 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:40:54,290 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:40:54,295 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:40:54,490 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:40:54,511 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:40:54,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54 WrapperNode [2018-11-12 18:40:54,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:40:54,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:40:54,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:40:54,513 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:40:54,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (1/1) ... [2018-11-12 18:40:54,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (1/1) ... [2018-11-12 18:40:54,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:40:54,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:40:54,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:40:54,715 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:40:54,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (1/1) ... [2018-11-12 18:40:54,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (1/1) ... [2018-11-12 18:40:54,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (1/1) ... [2018-11-12 18:40:54,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (1/1) ... [2018-11-12 18:40:54,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (1/1) ... [2018-11-12 18:40:54,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (1/1) ... [2018-11-12 18:40:54,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (1/1) ... [2018-11-12 18:40:54,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:40:54,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:40:54,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:40:54,840 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:40:54,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (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 [2018-11-12 18:40:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:40:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:40:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:40:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:40:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:40:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:40:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:40:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:40:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:40:59,728 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:40:59,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:40:59 BoogieIcfgContainer [2018-11-12 18:40:59,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:40:59,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:40:59,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:40:59,734 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:40:59,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:40:53" (1/3) ... [2018-11-12 18:40:59,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3714e07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:40:59, skipping insertion in model container [2018-11-12 18:40:59,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:40:54" (2/3) ... [2018-11-12 18:40:59,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3714e07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:40:59, skipping insertion in model container [2018-11-12 18:40:59,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:40:59" (3/3) ... [2018-11-12 18:40:59,739 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label41_true-unreach-call.c [2018-11-12 18:40:59,747 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:40:59,756 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:40:59,772 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:40:59,814 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:40:59,815 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:40:59,815 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:40:59,815 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:40:59,815 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:40:59,816 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:40:59,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:40:59,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:40:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-12 18:40:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-12 18:40:59,856 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:40:59,858 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] [2018-11-12 18:40:59,860 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:40:59,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:40:59,866 INFO L82 PathProgramCache]: Analyzing trace with hash -146636772, now seen corresponding path program 1 times [2018-11-12 18:40:59,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:40:59,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:59,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:40:59,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:59,920 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:00,305 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:41:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:41:00,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:41:00,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:41:00,425 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:00,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:41:00,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:41:00,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:41:00,447 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-12 18:41:02,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:02,511 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-12 18:41:02,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:41:02,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-12 18:41:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:02,535 INFO L225 Difference]: With dead ends: 782 [2018-11-12 18:41:02,535 INFO L226 Difference]: Without dead ends: 487 [2018-11-12 18:41:02,545 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 [2018-11-12 18:41:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-12 18:41:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-12 18:41:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-12 18:41:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-11-12 18:41:02,631 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 28 [2018-11-12 18:41:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:02,632 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-11-12 18:41:02,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:41:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-11-12 18:41:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-12 18:41:02,641 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:02,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:41:02,644 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:02,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:02,645 INFO L82 PathProgramCache]: Analyzing trace with hash -425752825, now seen corresponding path program 1 times [2018-11-12 18:41:02,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:02,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:02,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:02,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:02,648 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:41:03,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:41:03,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-12 18:41:03,195 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:03,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 18:41:03,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 18:41:03,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:41:03,198 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-11-12 18:41:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:08,823 INFO L93 Difference]: Finished difference Result 1759 states and 3238 transitions. [2018-11-12 18:41:08,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 18:41:08,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2018-11-12 18:41:08,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:08,843 INFO L225 Difference]: With dead ends: 1759 [2018-11-12 18:41:08,844 INFO L226 Difference]: Without dead ends: 1283 [2018-11-12 18:41:08,849 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-12 18:41:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2018-11-12 18:41:08,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1037. [2018-11-12 18:41:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-11-12 18:41:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-11-12 18:41:08,937 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 103 [2018-11-12 18:41:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:08,937 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-11-12 18:41:08,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 18:41:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-11-12 18:41:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-12 18:41:08,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:08,946 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:41:08,946 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:08,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1279135784, now seen corresponding path program 1 times [2018-11-12 18:41:08,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:08,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:08,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:08,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:08,951 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:09,290 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:41:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:41:09,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:09,349 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:41:09,349 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-11-12 18:41:09,352 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [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], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:41:09,397 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:41:09,397 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:41:09,876 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:41:09,878 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Performed 826 root evaluator evaluations with a maximum evaluation depth of 6. Performed 826 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 28 variables. [2018-11-12 18:41:09,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:09,907 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:41:10,497 INFO L227 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 73.13% of their original sizes. [2018-11-12 18:41:10,497 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:41:10,662 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-11-12 18:41:10,662 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:41:10,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:41:10,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 18:41:10,664 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:10,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 18:41:10,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 18:41:10,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:41:10,665 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 7 states. [2018-11-12 18:41:15,555 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:41:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:33,611 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-11-12 18:41:33,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:41:33,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2018-11-12 18:41:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:33,621 INFO L225 Difference]: With dead ends: 2260 [2018-11-12 18:41:33,621 INFO L226 Difference]: Without dead ends: 1229 [2018-11-12 18:41:33,624 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:41:33,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-11-12 18:41:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-11-12 18:41:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-11-12 18:41:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-11-12 18:41:33,666 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 176 [2018-11-12 18:41:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:33,667 INFO L480 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-11-12 18:41:33,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 18:41:33,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-11-12 18:41:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-12 18:41:33,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:33,672 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:41:33,672 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:33,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:33,676 INFO L82 PathProgramCache]: Analyzing trace with hash 239746622, now seen corresponding path program 1 times [2018-11-12 18:41:33,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:33,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:33,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:33,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:33,677 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 18:41:34,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:34,377 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:41:34,378 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-12 18:41:34,378 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [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], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:41:34,385 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:41:34,385 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:41:34,519 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:41:34,766 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:41:34,767 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Performed 3011 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3011 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:41:34,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:34,801 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:41:35,200 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 73.17% of their original sizes. [2018-11-12 18:41:35,200 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:41:35,589 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-12 18:41:35,590 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:41:35,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:41:35,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:41:35,591 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:35,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:41:35,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:41:35,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:41:35,600 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 11 states. [2018-11-12 18:41:47,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:47,194 INFO L93 Difference]: Finished difference Result 2453 states and 3929 transitions. [2018-11-12 18:41:47,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 18:41:47,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 220 [2018-11-12 18:41:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:47,203 INFO L225 Difference]: With dead ends: 2453 [2018-11-12 18:41:47,203 INFO L226 Difference]: Without dead ends: 1422 [2018-11-12 18:41:47,207 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 228 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:41:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2018-11-12 18:41:47,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1418. [2018-11-12 18:41:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2018-11-12 18:41:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2090 transitions. [2018-11-12 18:41:47,247 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2090 transitions. Word has length 220 [2018-11-12 18:41:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:47,247 INFO L480 AbstractCegarLoop]: Abstraction has 1418 states and 2090 transitions. [2018-11-12 18:41:47,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:41:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2090 transitions. [2018-11-12 18:41:47,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-12 18:41:47,251 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:47,252 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:41:47,252 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:47,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:47,252 INFO L82 PathProgramCache]: Analyzing trace with hash 990984458, now seen corresponding path program 1 times [2018-11-12 18:41:47,252 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:47,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:47,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:47,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:47,254 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 18:41:47,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:41:47,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:41:47,621 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:47,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:41:47,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:41:47,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:41:47,623 INFO L87 Difference]: Start difference. First operand 1418 states and 2090 transitions. Second operand 4 states. [2018-11-12 18:41:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:50,293 INFO L93 Difference]: Finished difference Result 3943 states and 6557 transitions. [2018-11-12 18:41:50,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:41:50,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-11-12 18:41:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:50,311 INFO L225 Difference]: With dead ends: 3943 [2018-11-12 18:41:50,312 INFO L226 Difference]: Without dead ends: 2912 [2018-11-12 18:41:50,320 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:41:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-11-12 18:41:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2896. [2018-11-12 18:41:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2896 states. [2018-11-12 18:41:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4414 transitions. [2018-11-12 18:41:50,399 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4414 transitions. Word has length 230 [2018-11-12 18:41:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:50,400 INFO L480 AbstractCegarLoop]: Abstraction has 2896 states and 4414 transitions. [2018-11-12 18:41:50,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:41:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4414 transitions. [2018-11-12 18:41:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-12 18:41:50,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:50,406 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:41:50,406 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:50,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1760436718, now seen corresponding path program 1 times [2018-11-12 18:41:50,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:50,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:50,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:50,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:50,408 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:41:50,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:50,969 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:41:50,970 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-12 18:41:50,970 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:41:50,991 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:41:50,991 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:41:51,242 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:41:51,606 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:41:51,606 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Performed 6419 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6419 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:41:51,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:51,610 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:41:52,029 INFO L227 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 73.16% of their original sizes. [2018-11-12 18:41:52,029 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:41:52,154 INFO L415 sIntCurrentIteration]: We unified 245 AI predicates to 245 [2018-11-12 18:41:52,154 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:41:52,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:41:52,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:41:52,155 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:52,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:41:52,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:41:52,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:41:52,157 INFO L87 Difference]: Start difference. First operand 2896 states and 4414 transitions. Second operand 11 states. [2018-11-12 18:42:02,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:42:02,681 INFO L93 Difference]: Finished difference Result 5796 states and 9172 transitions. [2018-11-12 18:42:02,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:42:02,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2018-11-12 18:42:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:42:02,699 INFO L225 Difference]: With dead ends: 5796 [2018-11-12 18:42:02,699 INFO L226 Difference]: Without dead ends: 3287 [2018-11-12 18:42:02,712 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 255 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:42:02,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2018-11-12 18:42:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 3281. [2018-11-12 18:42:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3281 states. [2018-11-12 18:42:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4855 transitions. [2018-11-12 18:42:02,785 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4855 transitions. Word has length 246 [2018-11-12 18:42:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:42:02,786 INFO L480 AbstractCegarLoop]: Abstraction has 3281 states and 4855 transitions. [2018-11-12 18:42:02,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:42:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4855 transitions. [2018-11-12 18:42:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-12 18:42:02,792 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:42:02,793 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:42:02,793 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:42:02,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:02,793 INFO L82 PathProgramCache]: Analyzing trace with hash -867635988, now seen corresponding path program 1 times [2018-11-12 18:42:02,793 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:42:02,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:02,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:42:02,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:02,795 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:42:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:42:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-12 18:42:03,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:42:03,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:42:03,027 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:42:03,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:42:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:42:03,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:42:03,028 INFO L87 Difference]: Start difference. First operand 3281 states and 4855 transitions. Second operand 3 states. [2018-11-12 18:42:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:42:04,812 INFO L93 Difference]: Finished difference Result 7810 states and 12108 transitions. [2018-11-12 18:42:04,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:42:04,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2018-11-12 18:42:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:42:04,839 INFO L225 Difference]: With dead ends: 7810 [2018-11-12 18:42:04,840 INFO L226 Difference]: Without dead ends: 4724 [2018-11-12 18:42:04,859 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:42:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2018-11-12 18:42:04,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 4650. [2018-11-12 18:42:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4650 states. [2018-11-12 18:42:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4650 states to 4650 states and 6888 transitions. [2018-11-12 18:42:04,985 INFO L78 Accepts]: Start accepts. Automaton has 4650 states and 6888 transitions. Word has length 251 [2018-11-12 18:42:04,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:42:04,986 INFO L480 AbstractCegarLoop]: Abstraction has 4650 states and 6888 transitions. [2018-11-12 18:42:04,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:42:04,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4650 states and 6888 transitions. [2018-11-12 18:42:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-11-12 18:42:05,007 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:42:05,008 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:42:05,008 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:42:05,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:05,009 INFO L82 PathProgramCache]: Analyzing trace with hash 976752805, now seen corresponding path program 1 times [2018-11-12 18:42:05,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:42:05,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:05,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:42:05,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:05,010 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:42:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:42:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 145 proven. 78 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-11-12 18:42:05,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:42:05,353 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:42:05,354 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-11-12 18:42:05,354 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [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], [530], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [815], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:42:05,359 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:42:05,359 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:42:05,545 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:42:06,083 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:42:06,083 INFO L272 AbstractInterpreter]: Visited 149 different actions 434 times. Merged at 5 different actions 9 times. Never widened. Performed 8185 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8185 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:42:06,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:06,091 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:42:06,916 INFO L227 lantSequenceWeakener]: Weakened 374 states. On average, predicates are now at 73.19% of their original sizes. [2018-11-12 18:42:06,917 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:42:07,068 INFO L415 sIntCurrentIteration]: We unified 376 AI predicates to 376 [2018-11-12 18:42:07,069 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:42:07,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:42:07,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-12 18:42:07,069 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:42:07,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 18:42:07,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 18:42:07,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-12 18:42:07,071 INFO L87 Difference]: Start difference. First operand 4650 states and 6888 transitions. Second operand 13 states. [2018-11-12 18:42:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:42:25,112 INFO L93 Difference]: Finished difference Result 8923 states and 13494 transitions. [2018-11-12 18:42:25,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:42:25,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 377 [2018-11-12 18:42:25,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:42:25,135 INFO L225 Difference]: With dead ends: 8923 [2018-11-12 18:42:25,135 INFO L226 Difference]: Without dead ends: 5045 [2018-11-12 18:42:25,151 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 386 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2018-11-12 18:42:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5045 states. [2018-11-12 18:42:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5045 to 5039. [2018-11-12 18:42:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5039 states. [2018-11-12 18:42:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 7301 transitions. [2018-11-12 18:42:25,282 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 7301 transitions. Word has length 377 [2018-11-12 18:42:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:42:25,283 INFO L480 AbstractCegarLoop]: Abstraction has 5039 states and 7301 transitions. [2018-11-12 18:42:25,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 18:42:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 7301 transitions. [2018-11-12 18:42:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-11-12 18:42:25,304 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:42:25,305 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:42:25,305 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:42:25,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:25,306 INFO L82 PathProgramCache]: Analyzing trace with hash -2103617349, now seen corresponding path program 1 times [2018-11-12 18:42:25,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:42:25,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:25,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:42:25,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:25,307 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:42:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:42:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 18:42:26,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:42:26,054 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:42:26,054 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 381 with the following transitions: [2018-11-12 18:42:26,054 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [815], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:42:26,063 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:42:26,064 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:42:26,163 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:42:27,477 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:42:27,478 INFO L272 AbstractInterpreter]: Visited 147 different actions 579 times. Merged at 7 different actions 24 times. Never widened. Performed 8959 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8959 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:42:27,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:27,483 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:42:27,995 INFO L227 lantSequenceWeakener]: Weakened 377 states. On average, predicates are now at 75.08% of their original sizes. [2018-11-12 18:42:27,996 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:42:28,099 INFO L415 sIntCurrentIteration]: We unified 379 AI predicates to 379 [2018-11-12 18:42:28,099 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:42:28,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:42:28,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:42:28,100 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:42:28,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:42:28,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:42:28,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:42:28,101 INFO L87 Difference]: Start difference. First operand 5039 states and 7301 transitions. Second operand 11 states. [2018-11-12 18:42:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:42:54,975 INFO L93 Difference]: Finished difference Result 14117 states and 21746 transitions. [2018-11-12 18:42:54,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 18:42:54,975 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 380 [2018-11-12 18:42:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:42:55,027 INFO L225 Difference]: With dead ends: 14117 [2018-11-12 18:42:55,027 INFO L226 Difference]: Without dead ends: 10239 [2018-11-12 18:42:55,056 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 391 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-12 18:42:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10239 states. [2018-11-12 18:42:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10239 to 9915. [2018-11-12 18:42:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9915 states. [2018-11-12 18:42:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 14355 transitions. [2018-11-12 18:42:56,115 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 14355 transitions. Word has length 380 [2018-11-12 18:42:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:42:56,116 INFO L480 AbstractCegarLoop]: Abstraction has 9915 states and 14355 transitions. [2018-11-12 18:42:56,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:42:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 14355 transitions. [2018-11-12 18:42:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-11-12 18:42:56,160 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:42:56,160 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:42:56,161 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:42:56,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:56,161 INFO L82 PathProgramCache]: Analyzing trace with hash 134087738, now seen corresponding path program 1 times [2018-11-12 18:42:56,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:42:56,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:56,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:42:56,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:56,162 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:42:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:42:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 145 proven. 78 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-12 18:42:56,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:42:56,486 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:42:56,486 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 394 with the following transitions: [2018-11-12 18:42:56,487 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [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], [530], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [815], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:42:56,490 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:42:56,490 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:42:56,612 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:42:57,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:42:57,435 INFO L272 AbstractInterpreter]: Visited 157 different actions 458 times. Merged at 5 different actions 9 times. Never widened. Performed 8598 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8598 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:42:57,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:57,473 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:42:58,329 INFO L227 lantSequenceWeakener]: Weakened 117 states. On average, predicates are now at 73.69% of their original sizes. [2018-11-12 18:42:58,329 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:42:58,786 INFO L415 sIntCurrentIteration]: We unified 392 AI predicates to 392 [2018-11-12 18:42:58,787 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:42:58,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:42:58,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 18:42:58,787 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:42:58,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 18:42:58,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 18:42:58,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2018-11-12 18:42:58,789 INFO L87 Difference]: Start difference. First operand 9915 states and 14355 transitions. Second operand 23 states. [2018-11-12 18:43:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:43:25,197 INFO L93 Difference]: Finished difference Result 19450 states and 28710 transitions. [2018-11-12 18:43:25,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 18:43:25,197 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 393 [2018-11-12 18:43:25,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:43:25,244 INFO L225 Difference]: With dead ends: 19450 [2018-11-12 18:43:25,244 INFO L226 Difference]: Without dead ends: 10503 [2018-11-12 18:43:25,271 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 411 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2018-11-12 18:43:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10503 states. [2018-11-12 18:43:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10503 to 10494. [2018-11-12 18:43:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10494 states. [2018-11-12 18:43:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10494 states to 10494 states and 14966 transitions. [2018-11-12 18:43:25,500 INFO L78 Accepts]: Start accepts. Automaton has 10494 states and 14966 transitions. Word has length 393 [2018-11-12 18:43:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:43:25,501 INFO L480 AbstractCegarLoop]: Abstraction has 10494 states and 14966 transitions. [2018-11-12 18:43:25,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 18:43:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 10494 states and 14966 transitions. [2018-11-12 18:43:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-11-12 18:43:25,544 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:43:25,545 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:43:25,545 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:43:25,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -205964671, now seen corresponding path program 1 times [2018-11-12 18:43:25,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:43:25,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:25,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:25,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:25,547 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:43:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 293 proven. 128 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 18:43:25,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:25,992 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:43:25,992 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 415 with the following transitions: [2018-11-12 18:43:25,992 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [780], [781], [785], [789], [793], [797], [808], [812], [815], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:43:25,994 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:43:25,994 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:43:26,063 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:43:26,998 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:43:26,998 INFO L272 AbstractInterpreter]: Visited 148 different actions 579 times. Merged at 7 different actions 22 times. Never widened. Performed 8295 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8295 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:43:27,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:27,006 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:43:27,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:27,007 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:43:27,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:27,018 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:43:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:27,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:43:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-12 18:43:27,682 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:43:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-12 18:43:28,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:43:28,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 18:43:28,560 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:43:28,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 18:43:28,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 18:43:28,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:43:28,562 INFO L87 Difference]: Start difference. First operand 10494 states and 14966 transitions. Second operand 9 states. [2018-11-12 18:43:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:43:34,525 INFO L93 Difference]: Finished difference Result 28025 states and 43998 transitions. [2018-11-12 18:43:34,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 18:43:34,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 414 [2018-11-12 18:43:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:43:34,654 INFO L225 Difference]: With dead ends: 28025 [2018-11-12 18:43:34,654 INFO L226 Difference]: Without dead ends: 18884 [2018-11-12 18:43:34,738 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 843 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2018-11-12 18:43:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18884 states. [2018-11-12 18:43:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18884 to 16578. [2018-11-12 18:43:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16578 states. [2018-11-12 18:43:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16578 states to 16578 states and 21433 transitions. [2018-11-12 18:43:35,241 INFO L78 Accepts]: Start accepts. Automaton has 16578 states and 21433 transitions. Word has length 414 [2018-11-12 18:43:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:43:35,242 INFO L480 AbstractCegarLoop]: Abstraction has 16578 states and 21433 transitions. [2018-11-12 18:43:35,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 18:43:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 16578 states and 21433 transitions. [2018-11-12 18:43:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-12 18:43:35,304 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:43:35,305 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:43:35,305 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:43:35,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:35,306 INFO L82 PathProgramCache]: Analyzing trace with hash -947696070, now seen corresponding path program 1 times [2018-11-12 18:43:35,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:43:35,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:35,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:35,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:35,307 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:43:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-12 18:43:36,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:36,264 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:43:36,264 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-12 18:43:36,264 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [785], [789], [793], [797], [808], [812], [815], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:43:36,267 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:43:36,267 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:43:36,373 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:43:36,892 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:43:36,892 INFO L272 AbstractInterpreter]: Visited 147 different actions 581 times. Merged at 7 different actions 26 times. Never widened. Performed 8613 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8613 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:43:36,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:36,898 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:43:37,437 INFO L227 lantSequenceWeakener]: Weakened 412 states. On average, predicates are now at 73.15% of their original sizes. [2018-11-12 18:43:37,437 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:43:37,737 INFO L415 sIntCurrentIteration]: We unified 414 AI predicates to 414 [2018-11-12 18:43:37,737 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:43:37,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:43:37,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 18:43:37,738 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:43:37,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:43:37,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:43:37,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:43:37,738 INFO L87 Difference]: Start difference. First operand 16578 states and 21433 transitions. Second operand 10 states. [2018-11-12 18:43:50,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:43:50,292 INFO L93 Difference]: Finished difference Result 36466 states and 47713 transitions. [2018-11-12 18:43:50,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 18:43:50,292 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 415 [2018-11-12 18:43:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:43:50,369 INFO L225 Difference]: With dead ends: 36466 [2018-11-12 18:43:50,370 INFO L226 Difference]: Without dead ends: 18276 [2018-11-12 18:43:50,444 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 421 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-12 18:43:50,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18276 states. [2018-11-12 18:43:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18276 to 18262. [2018-11-12 18:43:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18262 states. [2018-11-12 18:43:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18262 states to 18262 states and 23446 transitions. [2018-11-12 18:43:50,846 INFO L78 Accepts]: Start accepts. Automaton has 18262 states and 23446 transitions. Word has length 415 [2018-11-12 18:43:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:43:50,847 INFO L480 AbstractCegarLoop]: Abstraction has 18262 states and 23446 transitions. [2018-11-12 18:43:50,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 18:43:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 18262 states and 23446 transitions. [2018-11-12 18:43:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-11-12 18:43:50,921 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:43:50,922 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:43:50,922 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:43:50,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:50,923 INFO L82 PathProgramCache]: Analyzing trace with hash -641655353, now seen corresponding path program 1 times [2018-11-12 18:43:50,923 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:43:50,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:50,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:50,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:50,924 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:43:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-12 18:43:51,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:51,381 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:43:51,381 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 467 with the following transitions: [2018-11-12 18:43:51,381 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [558], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [815], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:43:51,384 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:43:51,384 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:43:51,490 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:43:53,488 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:43:53,488 INFO L272 AbstractInterpreter]: Visited 149 different actions 739 times. Merged at 8 different actions 41 times. Widened at 1 different actions 1 times. Performed 11490 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11490 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:43:53,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:53,495 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:43:53,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:53,495 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:43:53,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:53,503 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:43:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:53,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:43:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-12 18:43:53,969 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:43:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-12 18:43:54,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:43:54,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-11-12 18:43:54,295 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:43:54,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 18:43:54,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 18:43:54,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:43:54,297 INFO L87 Difference]: Start difference. First operand 18262 states and 23446 transitions. Second operand 8 states. [2018-11-12 18:44:03,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:44:03,169 INFO L93 Difference]: Finished difference Result 49743 states and 66873 transitions. [2018-11-12 18:44:03,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 18:44:03,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 466 [2018-11-12 18:44:03,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:44:03,284 INFO L225 Difference]: With dead ends: 49743 [2018-11-12 18:44:03,284 INFO L226 Difference]: Without dead ends: 30731 [2018-11-12 18:44:03,423 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 953 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=310, Invalid=1096, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 18:44:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30731 states. [2018-11-12 18:44:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30731 to 29961. [2018-11-12 18:44:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29961 states. [2018-11-12 18:44:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29961 states to 29961 states and 37122 transitions. [2018-11-12 18:44:03,994 INFO L78 Accepts]: Start accepts. Automaton has 29961 states and 37122 transitions. Word has length 466 [2018-11-12 18:44:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:44:03,995 INFO L480 AbstractCegarLoop]: Abstraction has 29961 states and 37122 transitions. [2018-11-12 18:44:03,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 18:44:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 29961 states and 37122 transitions. [2018-11-12 18:44:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-11-12 18:44:04,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:44:04,078 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:44:04,078 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:44:04,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:04,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1288660798, now seen corresponding path program 1 times [2018-11-12 18:44:04,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:44:04,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:04,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:04,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:04,080 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:44:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 427 proven. 2 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-12 18:44:04,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:44:04,583 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:44:04,583 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 506 with the following transitions: [2018-11-12 18:44:04,584 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [785], [789], [793], [797], [808], [812], [815], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:44:04,586 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:44:04,586 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:44:04,724 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:44:05,998 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:44:05,998 INFO L272 AbstractInterpreter]: Visited 148 different actions 885 times. Merged at 8 different actions 52 times. Widened at 1 different actions 2 times. Performed 15653 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15653 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 11 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:44:06,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:06,007 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:44:06,709 INFO L227 lantSequenceWeakener]: Weakened 502 states. On average, predicates are now at 73.14% of their original sizes. [2018-11-12 18:44:06,709 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:44:06,824 INFO L415 sIntCurrentIteration]: We unified 504 AI predicates to 504 [2018-11-12 18:44:06,824 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:44:06,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:44:06,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 18:44:06,825 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:44:06,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:44:06,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:44:06,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:44:06,826 INFO L87 Difference]: Start difference. First operand 29961 states and 37122 transitions. Second operand 10 states. [2018-11-12 18:44:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:44:27,841 INFO L93 Difference]: Finished difference Result 63573 states and 79332 transitions. [2018-11-12 18:44:27,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 18:44:27,841 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 505 [2018-11-12 18:44:27,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:44:27,967 INFO L225 Difference]: With dead ends: 63573 [2018-11-12 18:44:27,967 INFO L226 Difference]: Without dead ends: 40127 [2018-11-12 18:44:28,031 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 511 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-12 18:44:28,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40127 states. [2018-11-12 18:44:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40127 to 40049. [2018-11-12 18:44:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40049 states. [2018-11-12 18:44:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40049 states to 40049 states and 49489 transitions. [2018-11-12 18:44:28,767 INFO L78 Accepts]: Start accepts. Automaton has 40049 states and 49489 transitions. Word has length 505 [2018-11-12 18:44:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:44:28,767 INFO L480 AbstractCegarLoop]: Abstraction has 40049 states and 49489 transitions. [2018-11-12 18:44:28,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 18:44:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 40049 states and 49489 transitions. Received shutdown request... [2018-11-12 18:44:28,785 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:44:28,789 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:44:28,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:44:28 BoogieIcfgContainer [2018-11-12 18:44:28,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:44:28,791 INFO L168 Benchmark]: Toolchain (without parser) took 215263.40 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 77.4 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-12 18:44:28,792 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:44:28,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 982.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:44:28,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 201.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 677.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -791.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-12 18:44:28,795 INFO L168 Benchmark]: Boogie Preprocessor took 124.49 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:44:28,795 INFO L168 Benchmark]: RCFGBuilder took 4889.82 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 167.1 MB). Peak memory consumption was 167.1 MB. Max. memory is 7.1 GB. [2018-11-12 18:44:28,797 INFO L168 Benchmark]: TraceAbstraction took 209059.34 ms. Allocated memory was 2.2 GB in the beginning and 4.3 GB in the end (delta: 2.1 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 638.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 18:44:28,801 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 982.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 201.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 677.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -791.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.49 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4889.82 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 167.1 MB). Peak memory consumption was 167.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209059.34 ms. Allocated memory was 2.2 GB in the beginning and 4.3 GB in the end (delta: 2.1 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 638.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 69). Cancelled while IsEmpty was searching accepting run (input had 40049 states). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 208.9s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 178.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3800 SDtfs, 16156 SDslu, 5132 SDs, 0 SdLazy, 33205 SolverSat, 4464 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.6s Time, PredicateUnifierStatistics: 16 DeclaredPredicates, 4672 GetRequests, 4431 SyntacticMatches, 6 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40049occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.9s AbstIntTime, 10 AbstIntIterations, 8 AbstIntStrong, 0.9976835009880282 AbsIntWeakeningRatio, 0.09652366863905325 AbsIntAvgWeakeningVarsNumRemoved, 23.321005917159763 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 3860 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 5084 NumberOfCodeBlocks, 5084 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5946 ConstructedInterpolants, 0 QuantifiedInterpolants, 5823264 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1424 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 5667/6082 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown