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/Problem16_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:21:05,900 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:21:05,902 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:21:05,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:21:05,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:21:05,915 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:21:05,916 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:21:05,918 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:21:05,921 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:21:05,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:21:05,922 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:21:05,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:21:05,924 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:21:05,926 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:21:05,929 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:21:05,930 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:21:05,931 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:21:05,933 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:21:05,935 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:21:05,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:21:05,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:21:05,939 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:21:05,942 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-12 19:21:05,954 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 19:21:05,970 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:21:05,970 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:21:05,971 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:21:05,971 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:21:05,971 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:21:05,971 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:21:05,972 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:21:05,972 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:21:05,972 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:21:05,972 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:21:05,972 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:21:05,972 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:21:05,973 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:21:05,973 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:21:05,974 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:21:05,974 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:21:05,974 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:21:05,974 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:21:05,974 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:21:05,975 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:21:05,975 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:21:05,975 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:21:05,975 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:21:05,975 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:21:05,976 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:21:05,976 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:21:05,976 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:21:05,976 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:21:05,976 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:21:05,977 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:21:05,977 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:21:05,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:21:05,977 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:21:05,977 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:21:05,978 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:21:06,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:21:06,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:21:06,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:21:06,048 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:21:06,048 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:21:06,049 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label24_true-unreach-call.c [2018-11-12 19:21:06,122 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b23218c/17b83e528a32484a952d7966d7a2e334/FLAG40b9c0e79 [2018-11-12 19:21:06,780 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:21:06,781 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label24_true-unreach-call.c [2018-11-12 19:21:06,798 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b23218c/17b83e528a32484a952d7966d7a2e334/FLAG40b9c0e79 [2018-11-12 19:21:06,813 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b23218c/17b83e528a32484a952d7966d7a2e334 [2018-11-12 19:21:06,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:21:06,826 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:21:06,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:21:06,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:21:06,831 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:21:06,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:21:06" (1/1) ... [2018-11-12 19:21:06,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7533e6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:06, skipping insertion in model container [2018-11-12 19:21:06,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:21:06" (1/1) ... [2018-11-12 19:21:06,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:21:06,928 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:21:07,776 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:21:07,782 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:21:08,054 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:21:08,077 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:21:08,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08 WrapperNode [2018-11-12 19:21:08,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:21:08,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:21:08,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:21:08,079 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:21:08,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (1/1) ... [2018-11-12 19:21:08,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (1/1) ... [2018-11-12 19:21:08,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:21:08,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:21:08,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:21:08,265 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:21:08,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (1/1) ... [2018-11-12 19:21:08,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (1/1) ... [2018-11-12 19:21:08,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (1/1) ... [2018-11-12 19:21:08,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (1/1) ... [2018-11-12 19:21:08,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (1/1) ... [2018-11-12 19:21:08,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (1/1) ... [2018-11-12 19:21:08,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (1/1) ... [2018-11-12 19:21:08,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:21:08,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:21:08,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:21:08,423 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:21:08,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (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 19:21:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:21:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:21:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:21:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:21:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:21:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:21:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:21:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:21:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:21:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:21:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:21:15,513 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:21:15,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:21:15 BoogieIcfgContainer [2018-11-12 19:21:15,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:21:15,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:21:15,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:21:15,520 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:21:15,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:21:06" (1/3) ... [2018-11-12 19:21:15,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5effdb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:21:15, skipping insertion in model container [2018-11-12 19:21:15,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:08" (2/3) ... [2018-11-12 19:21:15,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5effdb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:21:15, skipping insertion in model container [2018-11-12 19:21:15,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:21:15" (3/3) ... [2018-11-12 19:21:15,524 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label24_true-unreach-call.c [2018-11-12 19:21:15,539 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:21:15,551 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:21:15,569 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:21:15,623 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:21:15,623 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:21:15,623 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:21:15,623 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:21:15,624 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:21:15,624 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:21:15,624 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:21:15,624 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:21:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 19:21:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-12 19:21:15,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:15,683 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:21:15,685 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:15,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:15,691 INFO L82 PathProgramCache]: Analyzing trace with hash -2128863117, now seen corresponding path program 1 times [2018-11-12 19:21:15,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:15,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:15,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:15,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:15,743 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:16,126 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:21:16,227 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 19:21:16,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:21:16,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:21:16,230 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:16,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:21:16,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:21:16,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:21:16,257 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 19:21:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:21:19,987 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 19:21:19,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:21:19,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-11-12 19:21:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:21:20,015 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 19:21:20,015 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 19:21:20,024 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 19:21:20,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 19:21:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 19:21:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 19:21:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-12 19:21:20,144 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 59 [2018-11-12 19:21:20,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:21:20,145 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-12 19:21:20,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:21:20,145 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-12 19:21:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-12 19:21:20,157 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:20,158 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:21:20,158 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:20,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:20,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2051770448, now seen corresponding path program 1 times [2018-11-12 19:21:20,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:20,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:20,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:20,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:20,161 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:21:20,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:21:20,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:21:20,695 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:20,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:21:20,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:21:20,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:21:20,698 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-12 19:21:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:21:28,403 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-12 19:21:28,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:21:28,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-11-12 19:21:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:21:28,416 INFO L225 Difference]: With dead ends: 2183 [2018-11-12 19:21:28,417 INFO L226 Difference]: Without dead ends: 1445 [2018-11-12 19:21:28,422 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:21:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-12 19:21:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-12 19:21:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-12 19:21:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-12 19:21:28,504 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 167 [2018-11-12 19:21:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:21:28,505 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-12 19:21:28,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:21:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-12 19:21:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-12 19:21:28,509 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:28,509 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:21:28,509 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:28,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1876159715, now seen corresponding path program 1 times [2018-11-12 19:21:28,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:28,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:28,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:28,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:28,511 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:21:28,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:21:28,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:21:28,809 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:28,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:21:28,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:21:28,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:21:28,811 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-12 19:21:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:21:32,531 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-12 19:21:32,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:21:32,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-11-12 19:21:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:21:32,555 INFO L225 Difference]: With dead ends: 3902 [2018-11-12 19:21:32,555 INFO L226 Difference]: Without dead ends: 2484 [2018-11-12 19:21:32,562 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:21:32,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-12 19:21:32,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-12 19:21:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-12 19:21:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-12 19:21:32,651 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 170 [2018-11-12 19:21:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:21:32,652 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-12 19:21:32,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:21:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-12 19:21:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-12 19:21:32,661 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:32,661 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:21:32,661 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:32,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:32,662 INFO L82 PathProgramCache]: Analyzing trace with hash -170942544, now seen corresponding path program 1 times [2018-11-12 19:21:32,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:32,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:32,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:32,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:32,663 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 104 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:21:33,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:21:33,046 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:21:33,047 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-11-12 19:21:33,049 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:21:33,103 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:21:33,103 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:21:34,011 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:21:34,014 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Performed 2032 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2032 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:21:34,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:34,063 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:21:35,178 INFO L227 lantSequenceWeakener]: Weakened 264 states. On average, predicates are now at 78.07% of their original sizes. [2018-11-12 19:21:35,179 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:21:36,948 INFO L415 sIntCurrentIteration]: We unified 285 AI predicates to 285 [2018-11-12 19:21:36,948 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:21:36,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:21:36,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 19:21:36,949 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:36,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:21:36,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:21:36,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:21:36,951 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-12 19:21:41,915 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:04,175 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-12 19:22:04,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:22:04,176 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 286 [2018-11-12 19:22:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:04,194 INFO L225 Difference]: With dead ends: 5285 [2018-11-12 19:22:04,194 INFO L226 Difference]: Without dead ends: 2817 [2018-11-12 19:22:04,204 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 234 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:22:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-12 19:22:04,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-12 19:22:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-12 19:22:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-12 19:22:04,289 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 286 [2018-11-12 19:22:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:04,290 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-12 19:22:04,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:22:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-12 19:22:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-11-12 19:22:04,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:04,300 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 19:22:04,300 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:04,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:04,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1637733261, now seen corresponding path program 1 times [2018-11-12 19:22:04,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:04,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:04,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:04,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:04,302 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 251 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 19:22:05,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:05,704 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:05,704 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 379 with the following transitions: [2018-11-12 19:22:05,705 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:05,714 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:05,714 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:05,821 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:06,342 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:06,343 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Performed 6056 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6056 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:22:06,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:06,380 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:07,232 INFO L227 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-12 19:22:07,233 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:22:08,201 INFO L415 sIntCurrentIteration]: We unified 377 AI predicates to 377 [2018-11-12 19:22:08,201 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:22:08,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:22:08,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 19:22:08,202 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:08,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:22:08,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:22:08,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:22:08,204 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 19 states. [2018-11-12 19:22:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:45,422 INFO L93 Difference]: Finished difference Result 6705 states and 9775 transitions. [2018-11-12 19:22:45,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:22:45,422 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 378 [2018-11-12 19:22:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:45,440 INFO L225 Difference]: With dead ends: 6705 [2018-11-12 19:22:45,440 INFO L226 Difference]: Without dead ends: 4237 [2018-11-12 19:22:45,450 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 390 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2018-11-12 19:22:45,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2018-11-12 19:22:45,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 3779. [2018-11-12 19:22:45,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3779 states. [2018-11-12 19:22:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 5105 transitions. [2018-11-12 19:22:45,544 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 5105 transitions. Word has length 378 [2018-11-12 19:22:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:45,545 INFO L480 AbstractCegarLoop]: Abstraction has 3779 states and 5105 transitions. [2018-11-12 19:22:45,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:22:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 5105 transitions. [2018-11-12 19:22:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-11-12 19:22:45,555 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:45,556 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 19:22:45,556 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:45,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:45,556 INFO L82 PathProgramCache]: Analyzing trace with hash 314587883, now seen corresponding path program 1 times [2018-11-12 19:22:45,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:45,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:45,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:45,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:45,558 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:46,050 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 19:22:46,412 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 19:22:46,857 WARN L179 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 19:22:47,066 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-12 19:22:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 275 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:22:47,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:47,606 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:47,606 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 415 with the following transitions: [2018-11-12 19:22:47,607 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:47,611 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:47,611 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:47,754 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:48,152 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:48,152 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Performed 7125 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7125 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:22:48,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:48,191 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:49,069 INFO L227 lantSequenceWeakener]: Weakened 106 states. On average, predicates are now at 77.4% of their original sizes. [2018-11-12 19:22:49,069 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:22:50,014 INFO L415 sIntCurrentIteration]: We unified 413 AI predicates to 413 [2018-11-12 19:22:50,015 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:22:50,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:22:50,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [13] total 29 [2018-11-12 19:22:50,015 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:50,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:22:50,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:22:50,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:22:50,016 INFO L87 Difference]: Start difference. First operand 3779 states and 5105 transitions. Second operand 18 states. [2018-11-12 19:23:41,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:23:41,603 INFO L93 Difference]: Finished difference Result 7996 states and 11260 transitions. [2018-11-12 19:23:41,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 19:23:41,604 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 414 [2018-11-12 19:23:41,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:23:41,624 INFO L225 Difference]: With dead ends: 7996 [2018-11-12 19:23:41,625 INFO L226 Difference]: Without dead ends: 5184 [2018-11-12 19:23:41,635 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 428 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 19:23:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2018-11-12 19:23:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4465. [2018-11-12 19:23:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4465 states. [2018-11-12 19:23:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 5834 transitions. [2018-11-12 19:23:41,749 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 5834 transitions. Word has length 414 [2018-11-12 19:23:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:23:41,750 INFO L480 AbstractCegarLoop]: Abstraction has 4465 states and 5834 transitions. [2018-11-12 19:23:41,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:23:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 5834 transitions. [2018-11-12 19:23:41,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-11-12 19:23:41,767 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:23:41,768 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:23:41,768 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:23:41,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:41,769 INFO L82 PathProgramCache]: Analyzing trace with hash -114594037, now seen corresponding path program 1 times [2018-11-12 19:23:41,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:23:41,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:41,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:23:41,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:41,770 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:23:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:23:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 266 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-12 19:23:43,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:23:43,316 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:23:43,317 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 527 with the following transitions: [2018-11-12 19:23:43,317 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:23:43,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:23:43,326 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:23:43,743 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:23:43,743 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Performed 7400 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7400 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:23:43,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:43,747 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:23:44,236 INFO L227 lantSequenceWeakener]: Weakened 296 states. On average, predicates are now at 78.11% of their original sizes. [2018-11-12 19:23:44,237 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:23:46,376 INFO L415 sIntCurrentIteration]: We unified 525 AI predicates to 525 [2018-11-12 19:23:46,377 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:23:46,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:23:46,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-11-12 19:23:46,377 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:23:46,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:23:46,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:23:46,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:23:46,379 INFO L87 Difference]: Start difference. First operand 4465 states and 5834 transitions. Second operand 18 states. [2018-11-12 19:23:48,345 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:24:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:24:10,694 INFO L93 Difference]: Finished difference Result 8259 states and 11245 transitions. [2018-11-12 19:24:10,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 19:24:10,694 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 526 [2018-11-12 19:24:10,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:24:10,712 INFO L225 Difference]: With dead ends: 8259 [2018-11-12 19:24:10,712 INFO L226 Difference]: Without dead ends: 5101 [2018-11-12 19:24:10,721 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 541 GetRequests, 422 SyntacticMatches, 87 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 19:24:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2018-11-12 19:24:10,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 5096. [2018-11-12 19:24:10,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5096 states. [2018-11-12 19:24:10,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 6499 transitions. [2018-11-12 19:24:10,832 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 6499 transitions. Word has length 526 [2018-11-12 19:24:10,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:24:10,833 INFO L480 AbstractCegarLoop]: Abstraction has 5096 states and 6499 transitions. [2018-11-12 19:24:10,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:24:10,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 6499 transitions. [2018-11-12 19:24:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-11-12 19:24:10,852 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:24:10,853 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:24:10,853 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:24:10,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:10,854 INFO L82 PathProgramCache]: Analyzing trace with hash -283402117, now seen corresponding path program 1 times [2018-11-12 19:24:10,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:24:10,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:10,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:24:10,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:10,855 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:24:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:24:11,313 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:24:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 162 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 19:24:11,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:24:11,718 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:24:11,718 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 535 with the following transitions: [2018-11-12 19:24:11,719 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:24:11,724 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:24:11,724 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:24:14,963 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:24:14,963 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Performed 44382 root evaluator evaluations with a maximum evaluation depth of 6. Performed 44382 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:24:14,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:14,968 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:24:15,656 INFO L227 lantSequenceWeakener]: Weakened 80 states. On average, predicates are now at 80.06% of their original sizes. [2018-11-12 19:24:15,657 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:24:16,013 INFO L415 sIntCurrentIteration]: We unified 533 AI predicates to 533 [2018-11-12 19:24:16,013 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:24:16,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:24:16,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 19:24:16,014 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:24:16,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 19:24:16,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 19:24:16,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:24:16,017 INFO L87 Difference]: Start difference. First operand 5096 states and 6499 transitions. Second operand 22 states. [2018-11-12 19:24:18,431 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 19:24:46,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-12 19:24:46,021 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:24:46,027 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:24:46,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:24:46 BoogieIcfgContainer [2018-11-12 19:24:46,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:24:46,028 INFO L168 Benchmark]: Toolchain (without parser) took 219203.58 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 133.6 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-11-12 19:24:46,029 INFO L168 Benchmark]: CDTParser took 0.25 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 19:24:46,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1250.82 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:24:46,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 186.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:24:46,032 INFO L168 Benchmark]: Boogie Preprocessor took 157.32 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:24:46,032 INFO L168 Benchmark]: RCFGBuilder took 7092.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 271.8 MB). Peak memory consumption was 271.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:24:46,033 INFO L168 Benchmark]: TraceAbstraction took 210511.65 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 645.6 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-12 19:24:46,037 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1250.82 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 186.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.32 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 7092.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 271.8 MB). Peak memory consumption was 271.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210511.65 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 645.6 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was constructing difference of abstraction (5096states) and FLOYD_HOARE automaton (currently 30 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (6633 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 185.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2277 SDtfs, 22277 SDslu, 1559 SDs, 0 SdLazy, 27549 SolverSat, 3951 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.7s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2217 GetRequests, 1932 SyntacticMatches, 134 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5096occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9978541828202447 AbsIntWeakeningRatio, 0.07219878105954056 AbsIntAvgWeakeningVarsNumRemoved, 9.946085325832161 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 1218 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 2534 NumberOfCodeBlocks, 2534 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2526 ConstructedInterpolants, 0 QuantifiedInterpolants, 6167314 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 1543/2252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown