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/Problem15_label38_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:37:23,513 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:37:23,515 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:37:23,531 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:37:23,532 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:37:23,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:37:23,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:37:23,537 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:37:23,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:37:23,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:37:23,541 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:37:23,541 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:37:23,544 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:37:23,545 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:37:23,546 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:37:23,549 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:37:23,550 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:37:23,554 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:37:23,556 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:37:23,565 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:37:23,566 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:37:23,571 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:37:23,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:37:23,575 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:37:23,575 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:37:23,576 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:37:23,577 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:37:23,578 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:37:23,579 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:37:23,580 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:37:23,580 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:37:23,581 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:37:23,581 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:37:23,581 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:37:23,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:37:23,583 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:37:23,583 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 16:37:23,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:37:23,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:37:23,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:37:23,611 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:37:23,611 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:37:23,612 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:37:23,612 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:37:23,612 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:37:23,612 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:37:23,612 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:37:23,612 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:37:23,613 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:37:23,613 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:37:23,613 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:37:23,614 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:37:23,614 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:37:23,614 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:37:23,614 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:37:23,614 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:37:23,615 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:37:23,615 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:37:23,615 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:37:23,615 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:37:23,615 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:37:23,616 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:37:23,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:37:23,616 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:37:23,616 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:37:23,616 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:37:23,617 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:37:23,617 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:37:23,617 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:37:23,617 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:37:23,617 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:37:23,617 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:37:23,662 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:37:23,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:37:23,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:37:23,683 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:37:23,683 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:37:23,684 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label38_false-unreach-call.c [2018-11-12 16:37:23,753 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f094b7da/498137bcf0764667a927effedd4a841a/FLAG8bd6f4836 [2018-11-12 16:37:24,399 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:37:24,400 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label38_false-unreach-call.c [2018-11-12 16:37:24,429 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f094b7da/498137bcf0764667a927effedd4a841a/FLAG8bd6f4836 [2018-11-12 16:37:24,446 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f094b7da/498137bcf0764667a927effedd4a841a [2018-11-12 16:37:24,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:37:24,463 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:37:24,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:37:24,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:37:24,468 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:37:24,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:37:24" (1/1) ... [2018-11-12 16:37:24,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38263162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:24, skipping insertion in model container [2018-11-12 16:37:24,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:37:24" (1/1) ... [2018-11-12 16:37:24,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:37:24,598 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:37:25,525 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:37:25,530 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:37:25,833 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:37:25,854 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:37:25,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25 WrapperNode [2018-11-12 16:37:25,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:37:25,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:37:25,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:37:25,857 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:37:26,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (1/1) ... [2018-11-12 16:37:26,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (1/1) ... [2018-11-12 16:37:26,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:37:26,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:37:26,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:37:26,075 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:37:26,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (1/1) ... [2018-11-12 16:37:26,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (1/1) ... [2018-11-12 16:37:26,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (1/1) ... [2018-11-12 16:37:26,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (1/1) ... [2018-11-12 16:37:26,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (1/1) ... [2018-11-12 16:37:26,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (1/1) ... [2018-11-12 16:37:26,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (1/1) ... [2018-11-12 16:37:26,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:37:26,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:37:26,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:37:26,245 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:37:26,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (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 16:37:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:37:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:37:26,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:37:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:37:26,314 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:37:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:37:26,314 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:37:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:37:26,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:37:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:37:26,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:37:32,167 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:37:32,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:37:32 BoogieIcfgContainer [2018-11-12 16:37:32,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:37:32,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:37:32,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:37:32,173 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:37:32,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:37:24" (1/3) ... [2018-11-12 16:37:32,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e85727a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:37:32, skipping insertion in model container [2018-11-12 16:37:32,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:25" (2/3) ... [2018-11-12 16:37:32,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e85727a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:37:32, skipping insertion in model container [2018-11-12 16:37:32,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:37:32" (3/3) ... [2018-11-12 16:37:32,176 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label38_false-unreach-call.c [2018-11-12 16:37:32,184 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:37:32,192 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:37:32,207 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:37:32,253 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:37:32,253 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:37:32,253 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:37:32,253 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:37:32,253 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:37:32,254 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:37:32,254 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:37:32,254 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:37:32,292 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 16:37:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-12 16:37:32,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:32,300 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] [2018-11-12 16:37:32,302 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:32,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:32,307 INFO L82 PathProgramCache]: Analyzing trace with hash 751190353, now seen corresponding path program 1 times [2018-11-12 16:37:32,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:32,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:32,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:32,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:32,353 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:32,779 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 16:37:32,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:37:32,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:37:32,783 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:32,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:37:32,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:37:32,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:32,809 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 16:37:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:38,983 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-11-12 16:37:38,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:37:38,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-12 16:37:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:39,013 INFO L225 Difference]: With dead ends: 1510 [2018-11-12 16:37:39,013 INFO L226 Difference]: Without dead ends: 1066 [2018-11-12 16:37:39,022 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-11-12 16:37:39,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-11-12 16:37:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-11-12 16:37:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-11-12 16:37:39,151 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 37 [2018-11-12 16:37:39,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:39,153 INFO L480 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-11-12 16:37:39,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:37:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-11-12 16:37:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-12 16:37:39,160 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:39,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:39,161 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:39,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:39,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1920544059, now seen corresponding path program 1 times [2018-11-12 16:37:39,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:39,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:39,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:39,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:39,163 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:39,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:37:39,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:37:39,410 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:39,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:37:39,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:37:39,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:39,413 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 4 states. [2018-11-12 16:37:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:44,862 INFO L93 Difference]: Finished difference Result 3981 states and 6113 transitions. [2018-11-12 16:37:44,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:37:44,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2018-11-12 16:37:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:44,892 INFO L225 Difference]: With dead ends: 3981 [2018-11-12 16:37:44,892 INFO L226 Difference]: Without dead ends: 2923 [2018-11-12 16:37:44,902 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-11-12 16:37:44,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2921. [2018-11-12 16:37:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2018-11-12 16:37:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4008 transitions. [2018-11-12 16:37:45,016 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4008 transitions. Word has length 107 [2018-11-12 16:37:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:45,017 INFO L480 AbstractCegarLoop]: Abstraction has 2921 states and 4008 transitions. [2018-11-12 16:37:45,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:37:45,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4008 transitions. [2018-11-12 16:37:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-11-12 16:37:45,035 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:45,036 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:37:45,036 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:45,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:45,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1746176702, now seen corresponding path program 1 times [2018-11-12 16:37:45,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:45,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:45,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:45,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:45,042 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 61 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 16:37:45,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:45,778 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:37:45,779 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-11-12 16:37:45,782 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:37:45,829 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:37:45,829 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:37:46,389 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:37:48,099 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:37:48,103 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 12686 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12686 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 16:37:48,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:48,152 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:37:49,296 INFO L227 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-12 16:37:49,297 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:37:54,160 INFO L415 sIntCurrentIteration]: We unified 216 AI predicates to 216 [2018-11-12 16:37:54,161 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:37:54,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:37:54,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 16:37:54,162 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:54,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:37:54,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:37:54,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:37:54,164 INFO L87 Difference]: Start difference. First operand 2921 states and 4008 transitions. Second operand 19 states. [2018-11-12 16:38:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:58,818 INFO L93 Difference]: Finished difference Result 8671 states and 11318 transitions. [2018-11-12 16:38:58,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 16:38:58,819 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 217 [2018-11-12 16:38:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:58,846 INFO L225 Difference]: With dead ends: 8671 [2018-11-12 16:38:58,847 INFO L226 Difference]: Without dead ends: 5756 [2018-11-12 16:38:58,862 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 229 GetRequests, 95 SyntacticMatches, 104 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2018-11-12 16:38:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5756 states. [2018-11-12 16:38:58,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5756 to 4756. [2018-11-12 16:38:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4756 states. [2018-11-12 16:38:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4756 states to 4756 states and 5912 transitions. [2018-11-12 16:38:58,981 INFO L78 Accepts]: Start accepts. Automaton has 4756 states and 5912 transitions. Word has length 217 [2018-11-12 16:38:58,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:58,982 INFO L480 AbstractCegarLoop]: Abstraction has 4756 states and 5912 transitions. [2018-11-12 16:38:58,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:38:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4756 states and 5912 transitions. [2018-11-12 16:38:58,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-11-12 16:38:58,996 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:58,997 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:58,997 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:58,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:58,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1362182927, now seen corresponding path program 1 times [2018-11-12 16:38:58,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:58,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:58,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:58,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:58,999 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-11-12 16:38:59,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:38:59,861 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:38:59,861 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 467 with the following transitions: [2018-11-12 16:38:59,862 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:38:59,885 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:38:59,886 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:38:59,952 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:00,940 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:39:00,940 INFO L272 AbstractInterpreter]: Visited 284 different actions 845 times. Merged at 7 different actions 15 times. Never widened. Performed 12501 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12501 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:39:00,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:00,978 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:39:02,250 INFO L227 lantSequenceWeakener]: Weakened 463 states. On average, predicates are now at 80.13% of their original sizes. [2018-11-12 16:39:02,251 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:39:02,518 INFO L415 sIntCurrentIteration]: We unified 465 AI predicates to 465 [2018-11-12 16:39:02,518 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:39:02,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:39:02,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-12 16:39:02,519 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:39:02,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:39:02,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:39:02,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:39:02,520 INFO L87 Difference]: Start difference. First operand 4756 states and 5912 transitions. Second operand 10 states. [2018-11-12 16:39:34,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:34,719 INFO L93 Difference]: Finished difference Result 9868 states and 12468 transitions. [2018-11-12 16:39:34,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 16:39:34,719 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 466 [2018-11-12 16:39:34,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:34,751 INFO L225 Difference]: With dead ends: 9868 [2018-11-12 16:39:34,751 INFO L226 Difference]: Without dead ends: 6953 [2018-11-12 16:39:34,765 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 472 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-12 16:39:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6953 states. [2018-11-12 16:39:34,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6953 to 6941. [2018-11-12 16:39:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6941 states. [2018-11-12 16:39:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6941 states to 6941 states and 8251 transitions. [2018-11-12 16:39:34,927 INFO L78 Accepts]: Start accepts. Automaton has 6941 states and 8251 transitions. Word has length 466 [2018-11-12 16:39:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:34,928 INFO L480 AbstractCegarLoop]: Abstraction has 6941 states and 8251 transitions. [2018-11-12 16:39:34,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:39:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 6941 states and 8251 transitions. [2018-11-12 16:39:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-11-12 16:39:34,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:34,946 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:34,946 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:34,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:34,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1961841024, now seen corresponding path program 1 times [2018-11-12 16:39:34,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:34,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:34,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:34,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:34,948 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:39:35,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:35,989 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:35,989 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 508 with the following transitions: [2018-11-12 16:39:35,990 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:35,996 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:35,996 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:36,195 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:38,284 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:39:38,284 INFO L272 AbstractInterpreter]: Visited 285 different actions 1982 times. Merged at 8 different actions 56 times. Widened at 1 different actions 2 times. Performed 33253 root evaluator evaluations with a maximum evaluation depth of 6. Performed 33253 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 12 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:39:38,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:38,290 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:39:38,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:38,290 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 16:39:38,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:38,304 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:39:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:38,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:39:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:39:39,509 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:39:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:39:39,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:39:39,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-12 16:39:39,959 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:39:39,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:39:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:39:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:39:39,963 INFO L87 Difference]: Start difference. First operand 6941 states and 8251 transitions. Second operand 9 states. [2018-11-12 16:39:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:47,356 INFO L93 Difference]: Finished difference Result 15390 states and 19674 transitions. [2018-11-12 16:39:47,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 16:39:47,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 507 [2018-11-12 16:39:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:47,413 INFO L225 Difference]: With dead ends: 15390 [2018-11-12 16:39:47,414 INFO L226 Difference]: Without dead ends: 11532 [2018-11-12 16:39:47,445 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 1021 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:39:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11532 states. [2018-11-12 16:39:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11532 to 11140. [2018-11-12 16:39:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11140 states. [2018-11-12 16:39:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11140 states to 11140 states and 13033 transitions. [2018-11-12 16:39:47,744 INFO L78 Accepts]: Start accepts. Automaton has 11140 states and 13033 transitions. Word has length 507 [2018-11-12 16:39:47,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:47,751 INFO L480 AbstractCegarLoop]: Abstraction has 11140 states and 13033 transitions. [2018-11-12 16:39:47,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:39:47,751 INFO L276 IsEmpty]: Start isEmpty. Operand 11140 states and 13033 transitions. [2018-11-12 16:39:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-11-12 16:39:47,776 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:47,777 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-11-12 16:39:47,777 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:47,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:47,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1413630190, now seen corresponding path program 1 times [2018-11-12 16:39:47,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:47,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:47,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:47,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:47,780 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-12 16:39:48,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:48,873 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:48,873 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 545 with the following transitions: [2018-11-12 16:39:48,874 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [962], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:48,878 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:48,879 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:48,930 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:49,635 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:39:49,635 INFO L272 AbstractInterpreter]: Visited 284 different actions 851 times. Merged at 7 different actions 21 times. Never widened. Performed 12482 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12482 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:39:49,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:49,645 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:39:50,140 INFO L227 lantSequenceWeakener]: Weakened 541 states. On average, predicates are now at 83.4% of their original sizes. [2018-11-12 16:39:50,140 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:39:50,327 INFO L415 sIntCurrentIteration]: We unified 543 AI predicates to 543 [2018-11-12 16:39:50,328 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:39:50,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:39:50,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-12 16:39:50,328 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:39:50,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:39:50,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:39:50,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:39:50,329 INFO L87 Difference]: Start difference. First operand 11140 states and 13033 transitions. Second operand 10 states. [2018-11-12 16:40:10,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:10,192 INFO L93 Difference]: Finished difference Result 19300 states and 23239 transitions. [2018-11-12 16:40:10,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 16:40:10,192 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 544 [2018-11-12 16:40:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:10,225 INFO L225 Difference]: With dead ends: 19300 [2018-11-12 16:40:10,225 INFO L226 Difference]: Without dead ends: 12998 [2018-11-12 16:40:10,246 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 550 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-12 16:40:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12998 states. [2018-11-12 16:40:10,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12998 to 12644. [2018-11-12 16:40:10,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12644 states. [2018-11-12 16:40:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12644 states to 12644 states and 14650 transitions. [2018-11-12 16:40:10,457 INFO L78 Accepts]: Start accepts. Automaton has 12644 states and 14650 transitions. Word has length 544 [2018-11-12 16:40:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:10,458 INFO L480 AbstractCegarLoop]: Abstraction has 12644 states and 14650 transitions. [2018-11-12 16:40:10,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:40:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 12644 states and 14650 transitions. [2018-11-12 16:40:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-11-12 16:40:10,480 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:10,481 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:10,481 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:10,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:10,482 INFO L82 PathProgramCache]: Analyzing trace with hash 552499288, now seen corresponding path program 1 times [2018-11-12 16:40:10,482 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:10,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:10,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:10,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:10,483 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-12 16:40:10,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:10,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:40:10,903 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:10,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:40:10,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:40:10,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:40:10,904 INFO L87 Difference]: Start difference. First operand 12644 states and 14650 transitions. Second operand 3 states. [2018-11-12 16:40:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:13,506 INFO L93 Difference]: Finished difference Result 19251 states and 23179 transitions. [2018-11-12 16:40:13,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:40:13,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 553 [2018-11-12 16:40:13,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:13,548 INFO L225 Difference]: With dead ends: 19251 [2018-11-12 16:40:13,549 INFO L226 Difference]: Without dead ends: 12951 [2018-11-12 16:40:13,569 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 16:40:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12951 states. [2018-11-12 16:40:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12951 to 12643. [2018-11-12 16:40:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12643 states. [2018-11-12 16:40:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12643 states to 12643 states and 14653 transitions. [2018-11-12 16:40:13,790 INFO L78 Accepts]: Start accepts. Automaton has 12643 states and 14653 transitions. Word has length 553 [2018-11-12 16:40:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:13,791 INFO L480 AbstractCegarLoop]: Abstraction has 12643 states and 14653 transitions. [2018-11-12 16:40:13,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:40:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 12643 states and 14653 transitions. [2018-11-12 16:40:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-11-12 16:40:13,820 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:13,821 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:13,821 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:13,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:13,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1084360884, now seen corresponding path program 1 times [2018-11-12 16:40:13,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:13,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:13,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:13,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:13,823 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-12 16:40:14,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:14,491 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:40:14,492 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 579 with the following transitions: [2018-11-12 16:40:14,492 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:40:14,497 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:40:14,497 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:40:14,548 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:40:17,118 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:40:17,118 INFO L272 AbstractInterpreter]: Visited 286 different actions 1710 times. Merged at 9 different actions 53 times. Widened at 1 different actions 2 times. Performed 28213 root evaluator evaluations with a maximum evaluation depth of 6. Performed 28213 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 14 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-12 16:40:17,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:17,127 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:40:17,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:17,127 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 16:40:17,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:17,139 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:40:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:17,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:40:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-12 16:40:17,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:40:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-12 16:40:18,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:40:18,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-11-12 16:40:18,056 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:40:18,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:18,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:18,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:40:18,058 INFO L87 Difference]: Start difference. First operand 12643 states and 14653 transitions. Second operand 6 states. [2018-11-12 16:40:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:22,344 INFO L93 Difference]: Finished difference Result 23469 states and 29182 transitions. [2018-11-12 16:40:22,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 16:40:22,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 578 [2018-11-12 16:40:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:22,413 INFO L225 Difference]: With dead ends: 23469 [2018-11-12 16:40:22,414 INFO L226 Difference]: Without dead ends: 17170 [2018-11-12 16:40:22,432 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1169 GetRequests, 1158 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:40:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17170 states. [2018-11-12 16:40:22,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17170 to 15855. [2018-11-12 16:40:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15855 states. [2018-11-12 16:40:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 18477 transitions. [2018-11-12 16:40:22,725 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 18477 transitions. Word has length 578 [2018-11-12 16:40:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:22,726 INFO L480 AbstractCegarLoop]: Abstraction has 15855 states and 18477 transitions. [2018-11-12 16:40:22,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 18477 transitions. [2018-11-12 16:40:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-11-12 16:40:22,749 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:22,750 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:22,750 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:22,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash 507913305, now seen corresponding path program 1 times [2018-11-12 16:40:22,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:22,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:22,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:22,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:22,754 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-11-12 16:40:23,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:23,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:40:23,412 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:23,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:40:23,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:40:23,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:40:23,414 INFO L87 Difference]: Start difference. First operand 15855 states and 18477 transitions. Second operand 4 states. [2018-11-12 16:40:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:28,610 INFO L93 Difference]: Finished difference Result 36500 states and 44727 transitions. [2018-11-12 16:40:28,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:40:28,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 599 [2018-11-12 16:40:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:28,653 INFO L225 Difference]: With dead ends: 36500 [2018-11-12 16:40:28,653 INFO L226 Difference]: Without dead ends: 16196 [2018-11-12 16:40:28,713 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:40:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16196 states. [2018-11-12 16:40:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16196 to 16170. [2018-11-12 16:40:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16170 states. [2018-11-12 16:40:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16170 states to 16170 states and 18327 transitions. [2018-11-12 16:40:28,975 INFO L78 Accepts]: Start accepts. Automaton has 16170 states and 18327 transitions. Word has length 599 [2018-11-12 16:40:28,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:28,976 INFO L480 AbstractCegarLoop]: Abstraction has 16170 states and 18327 transitions. [2018-11-12 16:40:28,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:40:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 16170 states and 18327 transitions. [2018-11-12 16:40:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-11-12 16:40:29,002 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:29,003 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:29,003 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:29,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:29,004 INFO L82 PathProgramCache]: Analyzing trace with hash 801012460, now seen corresponding path program 1 times [2018-11-12 16:40:29,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:29,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:29,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:29,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:29,005 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 445 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-11-12 16:40:29,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:29,677 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:40:29,678 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 638 with the following transitions: [2018-11-12 16:40:29,678 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [790], [793], [797], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:40:29,682 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:40:29,683 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:40:30,159 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:40:31,039 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:40:31,039 INFO L272 AbstractInterpreter]: Visited 285 different actions 1127 times. Merged at 7 different actions 20 times. Never widened. Performed 21451 root evaluator evaluations with a maximum evaluation depth of 6. Performed 21451 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:40:31,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:31,045 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:40:31,673 INFO L227 lantSequenceWeakener]: Weakened 630 states. On average, predicates are now at 80.18% of their original sizes. [2018-11-12 16:40:31,673 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:40:31,834 INFO L415 sIntCurrentIteration]: We unified 636 AI predicates to 636 [2018-11-12 16:40:31,834 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:40:31,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:40:31,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 16:40:31,835 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:31,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:40:31,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:40:31,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:40:31,836 INFO L87 Difference]: Start difference. First operand 16170 states and 18327 transitions. Second operand 11 states. Received shutdown request... [2018-11-12 16:40:55,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 16:40:55,468 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:40:55,473 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:40:55,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:40:55 BoogieIcfgContainer [2018-11-12 16:40:55,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:40:55,475 INFO L168 Benchmark]: Toolchain (without parser) took 211013.53 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 969.8 MB in the end (delta: 452.3 MB). Peak memory consumption was 4.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:40:55,476 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:40:55,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1392.07 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:55,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 217.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.6 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:55,478 INFO L168 Benchmark]: Boogie Preprocessor took 169.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:55,479 INFO L168 Benchmark]: RCFGBuilder took 5923.95 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: 278.5 MB). Peak memory consumption was 278.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:55,480 INFO L168 Benchmark]: TraceAbstraction took 203304.77 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 969.8 MB in the end (delta: 980.2 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-11-12 16:40:55,485 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1392.07 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 217.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.6 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5923.95 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: 278.5 MB). Peak memory consumption was 278.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203304.77 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 969.8 MB in the end (delta: 980.2 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 97). Cancelled while BasicCegarLoop was constructing difference of abstraction (16170states) and FLOYD_HOARE automaton (currently 22 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (29083 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 203.2s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 172.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3699 SDtfs, 18865 SDslu, 3457 SDs, 0 SdLazy, 30187 SolverSat, 4637 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.1s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 4130 GetRequests, 3905 SyntacticMatches, 108 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16170occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.5s AbstIntTime, 6 AbstIntIterations, 4 AbstIntStrong, 0.9977660038718607 AbsIntWeakeningRatio, 0.06989247311827956 AbsIntAvgWeakeningVarsNumRemoved, 17.790860215053762 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 3411 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 5330 NumberOfCodeBlocks, 5330 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6401 ConstructedInterpolants, 0 QuantifiedInterpolants, 6418869 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1569 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 5564/5663 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown