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/Problem14_label41_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:30:19,516 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:30:19,518 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:30:19,530 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:30:19,531 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:30:19,532 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:30:19,533 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:30:19,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:30:19,536 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:30:19,537 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:30:19,538 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:30:19,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:30:19,539 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:30:19,540 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:30:19,542 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:30:19,542 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:30:19,543 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:30:19,545 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:30:19,547 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:30:19,549 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:30:19,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:30:19,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:30:19,554 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:30:19,554 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:30:19,554 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:30:19,555 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:30:19,556 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:30:19,557 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:30:19,558 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:30:19,559 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:30:19,559 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:30:19,560 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:30:19,560 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:30:19,561 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:30:19,562 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:30:19,562 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:30:19,563 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 16:30:19,579 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:30:19,579 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:30:19,580 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:30:19,580 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:30:19,580 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:30:19,580 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:30:19,581 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:30:19,581 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:30:19,581 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:30:19,581 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:30:19,582 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:30:19,582 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:30:19,582 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:30:19,583 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:30:19,583 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:30:19,583 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:30:19,583 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:30:19,583 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:30:19,584 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:30:19,584 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:30:19,584 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:30:19,584 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:30:19,584 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:30:19,585 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:30:19,585 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:30:19,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:30:19,585 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:30:19,585 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:30:19,586 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:30:19,586 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:30:19,586 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:30:19,586 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:30:19,586 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:30:19,587 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:30:19,587 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:30:19,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:30:19,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:30:19,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:30:19,648 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:30:19,648 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:30:19,649 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label41_false-unreach-call_false-termination.c [2018-11-12 16:30:19,702 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f85f2fb/58e9cf65ca7a4b479f8580b1a815d5cb/FLAG459b8ded2 [2018-11-12 16:30:20,292 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:30:20,294 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label41_false-unreach-call_false-termination.c [2018-11-12 16:30:20,321 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f85f2fb/58e9cf65ca7a4b479f8580b1a815d5cb/FLAG459b8ded2 [2018-11-12 16:30:20,336 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f85f2fb/58e9cf65ca7a4b479f8580b1a815d5cb [2018-11-12 16:30:20,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:30:20,348 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:30:20,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:30:20,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:30:20,353 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:30:20,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:30:20" (1/1) ... [2018-11-12 16:30:20,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a13cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:20, skipping insertion in model container [2018-11-12 16:30:20,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:30:20" (1/1) ... [2018-11-12 16:30:20,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:30:20,451 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:30:20,979 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:30:20,985 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:30:21,181 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:30:21,205 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:30:21,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21 WrapperNode [2018-11-12 16:30:21,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:30:21,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:30:21,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:30:21,211 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:30:21,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (1/1) ... [2018-11-12 16:30:21,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (1/1) ... [2018-11-12 16:30:21,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:30:21,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:30:21,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:30:21,368 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:30:21,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (1/1) ... [2018-11-12 16:30:21,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (1/1) ... [2018-11-12 16:30:21,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (1/1) ... [2018-11-12 16:30:21,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (1/1) ... [2018-11-12 16:30:21,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (1/1) ... [2018-11-12 16:30:21,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (1/1) ... [2018-11-12 16:30:21,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (1/1) ... [2018-11-12 16:30:21,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:30:21,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:30:21,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:30:21,486 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:30:21,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (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 16:30:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:30:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:30:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:30:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:30:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:30:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:30:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:30:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:30:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:30:25,040 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:30:25,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:30:25 BoogieIcfgContainer [2018-11-12 16:30:25,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:30:25,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:30:25,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:30:25,045 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:30:25,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:30:20" (1/3) ... [2018-11-12 16:30:25,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562b303e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:30:25, skipping insertion in model container [2018-11-12 16:30:25,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:21" (2/3) ... [2018-11-12 16:30:25,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562b303e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:30:25, skipping insertion in model container [2018-11-12 16:30:25,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:30:25" (3/3) ... [2018-11-12 16:30:25,049 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label41_false-unreach-call_false-termination.c [2018-11-12 16:30:25,058 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:30:25,074 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:30:25,095 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:30:25,144 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:30:25,145 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:30:25,145 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:30:25,145 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:30:25,145 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:30:25,146 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:30:25,146 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:30:25,146 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:30:25,186 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-12 16:30:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-12 16:30:25,192 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:25,194 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:30:25,196 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:25,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:25,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1981251204, now seen corresponding path program 1 times [2018-11-12 16:30:25,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:25,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:25,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:25,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:25,250 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:25,617 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 16:30:25,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:30:25,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:30:25,622 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:25,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:30:25,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:30:25,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:30:25,650 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-12 16:30:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:27,520 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-12 16:30:27,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:30:27,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-12 16:30:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:27,542 INFO L225 Difference]: With dead ends: 691 [2018-11-12 16:30:27,542 INFO L226 Difference]: Without dead ends: 434 [2018-11-12 16:30:27,551 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:30:27,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-12 16:30:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-12 16:30:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-12 16:30:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-12 16:30:27,673 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 14 [2018-11-12 16:30:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:27,674 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-12 16:30:27,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:30:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-12 16:30:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-12 16:30:27,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:27,685 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:30:27,685 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:27,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:27,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1394388241, now seen corresponding path program 1 times [2018-11-12 16:30:27,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:27,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:27,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:27,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:27,689 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:30:28,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:30:28,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:30:28,124 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:28,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:30:28,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:30:28,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:30:28,127 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-12 16:30:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:30,135 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-12 16:30:30,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:30:30,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-12 16:30:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:30,143 INFO L225 Difference]: With dead ends: 1062 [2018-11-12 16:30:30,143 INFO L226 Difference]: Without dead ends: 634 [2018-11-12 16:30:30,146 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:30:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-12 16:30:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-12 16:30:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-12 16:30:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-12 16:30:30,188 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 101 [2018-11-12 16:30:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:30,189 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-12 16:30:30,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:30:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-12 16:30:30,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-12 16:30:30,193 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:30,193 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:30:30,193 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:30,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:30,194 INFO L82 PathProgramCache]: Analyzing trace with hash -425574092, now seen corresponding path program 1 times [2018-11-12 16:30:30,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:30,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:30,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:30,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:30,196 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:30:30,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:30:30,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:30:30,351 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:30,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:30:30,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:30:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:30:30,353 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 3 states. [2018-11-12 16:30:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:33,273 INFO L93 Difference]: Finished difference Result 1797 states and 3018 transitions. [2018-11-12 16:30:33,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:30:33,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2018-11-12 16:30:33,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:33,291 INFO L225 Difference]: With dead ends: 1797 [2018-11-12 16:30:33,291 INFO L226 Difference]: Without dead ends: 1178 [2018-11-12 16:30:33,300 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 16:30:33,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2018-11-12 16:30:33,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1178. [2018-11-12 16:30:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2018-11-12 16:30:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1732 transitions. [2018-11-12 16:30:33,364 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1732 transitions. Word has length 110 [2018-11-12 16:30:33,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:33,365 INFO L480 AbstractCegarLoop]: Abstraction has 1178 states and 1732 transitions. [2018-11-12 16:30:33,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:30:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1732 transitions. [2018-11-12 16:30:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-12 16:30:33,384 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:33,384 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:30:33,387 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:33,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:33,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1659653320, now seen corresponding path program 1 times [2018-11-12 16:30:33,388 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:33,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:33,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:33,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:33,389 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 16:30:33,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:30:33,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:30:33,667 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:33,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:30:33,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:30:33,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:30:33,670 INFO L87 Difference]: Start difference. First operand 1178 states and 1732 transitions. Second operand 3 states. [2018-11-12 16:30:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:35,124 INFO L93 Difference]: Finished difference Result 2903 states and 4462 transitions. [2018-11-12 16:30:35,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:30:35,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-11-12 16:30:35,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:35,141 INFO L225 Difference]: With dead ends: 2903 [2018-11-12 16:30:35,142 INFO L226 Difference]: Without dead ends: 1731 [2018-11-12 16:30:35,151 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 16:30:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-12 16:30:35,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-12 16:30:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-12 16:30:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2449 transitions. [2018-11-12 16:30:35,211 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2449 transitions. Word has length 214 [2018-11-12 16:30:35,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:35,213 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2449 transitions. [2018-11-12 16:30:35,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:30:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2449 transitions. [2018-11-12 16:30:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-12 16:30:35,222 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:35,222 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:30:35,223 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:35,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:35,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1017345513, now seen corresponding path program 1 times [2018-11-12 16:30:35,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:35,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:35,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:35,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:35,225 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:35,662 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-12 16:30:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 14 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:30:35,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:30:35,852 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:30:35,854 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-11-12 16:30:35,856 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:30:35,909 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:30:35,910 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:30:36,611 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:30:36,623 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:30:36,625 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Performed 1025 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1025 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:30:36,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:36,667 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:30:37,347 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 77.18% of their original sizes. [2018-11-12 16:30:37,348 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:30:37,713 INFO L415 sIntCurrentIteration]: We unified 232 AI predicates to 232 [2018-11-12 16:30:37,714 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:30:37,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:30:37,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-12 16:30:37,715 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:37,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:30:37,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:30:37,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:30:37,717 INFO L87 Difference]: Start difference. First operand 1731 states and 2449 transitions. Second operand 7 states. [2018-11-12 16:30:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:52,189 INFO L93 Difference]: Finished difference Result 3641 states and 5191 transitions. [2018-11-12 16:30:52,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:30:52,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2018-11-12 16:30:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:52,200 INFO L225 Difference]: With dead ends: 3641 [2018-11-12 16:30:52,200 INFO L226 Difference]: Without dead ends: 1916 [2018-11-12 16:30:52,209 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:30:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-11-12 16:30:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-11-12 16:30:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-11-12 16:30:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2640 transitions. [2018-11-12 16:30:52,259 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2640 transitions. Word has length 233 [2018-11-12 16:30:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:52,260 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2640 transitions. [2018-11-12 16:30:52,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:30:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2640 transitions. [2018-11-12 16:30:52,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-11-12 16:30:52,267 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:52,268 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-12 16:30:52,268 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:52,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:52,268 INFO L82 PathProgramCache]: Analyzing trace with hash 931974248, now seen corresponding path program 1 times [2018-11-12 16:30:52,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:52,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:52,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:52,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:52,270 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:52,810 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:30:53,018 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 16:30:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 109 proven. 183 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:30:53,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:30:53,626 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:30:53,626 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-11-12 16:30:53,627 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:30:53,633 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:30:53,633 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:30:53,802 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:30:53,975 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:30:53,975 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Performed 2381 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2381 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 16:30:54,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:54,012 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:30:54,960 INFO L227 lantSequenceWeakener]: Weakened 161 states. On average, predicates are now at 77.4% of their original sizes. [2018-11-12 16:30:54,960 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:30:57,144 INFO L415 sIntCurrentIteration]: We unified 317 AI predicates to 317 [2018-11-12 16:30:57,145 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:30:57,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:30:57,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [12] total 38 [2018-11-12 16:30:57,146 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:57,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-12 16:30:57,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-12 16:30:57,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2018-11-12 16:30:57,149 INFO L87 Difference]: Start difference. First operand 1914 states and 2640 transitions. Second operand 28 states. [2018-11-12 16:31:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:31:28,609 INFO L93 Difference]: Finished difference Result 4353 states and 5967 transitions. [2018-11-12 16:31:28,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 16:31:28,609 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 318 [2018-11-12 16:31:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:31:28,620 INFO L225 Difference]: With dead ends: 4353 [2018-11-12 16:31:28,620 INFO L226 Difference]: Without dead ends: 1919 [2018-11-12 16:31:28,629 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 332 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=311, Invalid=1495, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 16:31:28,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2018-11-12 16:31:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1914. [2018-11-12 16:31:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-11-12 16:31:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2634 transitions. [2018-11-12 16:31:28,683 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2634 transitions. Word has length 318 [2018-11-12 16:31:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:31:28,685 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2634 transitions. [2018-11-12 16:31:28,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-12 16:31:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2634 transitions. [2018-11-12 16:31:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-11-12 16:31:28,694 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:31:28,695 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:31:28,695 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:31:28,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:28,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1252708484, now seen corresponding path program 1 times [2018-11-12 16:31:28,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:31:28,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:28,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:31:28,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:28,701 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:31:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:31:29,255 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:31:29,445 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 16:31:29,675 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:31:29,928 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:31:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 34 proven. 305 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:31:30,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:31:30,688 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:31:30,688 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 345 with the following transitions: [2018-11-12 16:31:30,689 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:31:30,693 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:31:30,693 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:31:30,757 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:31:30,871 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:31:30,871 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Performed 2183 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2183 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 16:31:30,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:30,895 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:31:31,302 INFO L227 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 77.53% of their original sizes. [2018-11-12 16:31:31,302 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:31:31,753 INFO L415 sIntCurrentIteration]: We unified 343 AI predicates to 343 [2018-11-12 16:31:31,753 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:31:31,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:31:31,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-11-12 16:31:31,754 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:31:31,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 16:31:31,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 16:31:31,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:31:31,755 INFO L87 Difference]: Start difference. First operand 1914 states and 2634 transitions. Second operand 21 states. [2018-11-12 16:31:50,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:31:50,846 INFO L93 Difference]: Finished difference Result 4014 states and 5543 transitions. [2018-11-12 16:31:50,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 16:31:50,847 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 344 [2018-11-12 16:31:50,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:31:50,857 INFO L225 Difference]: With dead ends: 4014 [2018-11-12 16:31:50,858 INFO L226 Difference]: Without dead ends: 2289 [2018-11-12 16:31:50,865 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 360 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=268, Invalid=1138, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 16:31:50,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2018-11-12 16:31:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2099. [2018-11-12 16:31:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2018-11-12 16:31:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2826 transitions. [2018-11-12 16:31:50,917 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2826 transitions. Word has length 344 [2018-11-12 16:31:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:31:50,918 INFO L480 AbstractCegarLoop]: Abstraction has 2099 states and 2826 transitions. [2018-11-12 16:31:50,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 16:31:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2826 transitions. [2018-11-12 16:31:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-11-12 16:31:50,928 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:31:50,929 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:31:50,929 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:31:50,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:50,929 INFO L82 PathProgramCache]: Analyzing trace with hash 127117116, now seen corresponding path program 1 times [2018-11-12 16:31:50,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:31:50,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:50,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:31:50,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:50,931 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:31:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:31:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 139 proven. 471 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:31:52,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:31:52,234 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:31:52,234 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 433 with the following transitions: [2018-11-12 16:31:52,235 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:31:52,239 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:31:52,240 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:31:52,292 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:31:52,492 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:31:52,493 INFO L272 AbstractInterpreter]: Visited 124 different actions 365 times. Merged at 7 different actions 17 times. Never widened. Performed 4171 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4171 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 16:31:52,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:52,498 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:31:52,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:31:52,498 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 16:31:52,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:31:52,509 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:31:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:31:52,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:31:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 387 proven. 135 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-12 16:31:54,243 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:31:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 51 proven. 474 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 16:31:55,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:31:55,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 23 [2018-11-12 16:31:55,554 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:31:55,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:31:55,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:31:55,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:31:55,556 INFO L87 Difference]: Start difference. First operand 2099 states and 2826 transitions. Second operand 18 states. [2018-11-12 16:32:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:01,507 INFO L93 Difference]: Finished difference Result 5623 states and 7734 transitions. [2018-11-12 16:32:01,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 16:32:01,510 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 432 [2018-11-12 16:32:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:01,529 INFO L225 Difference]: With dead ends: 5623 [2018-11-12 16:32:01,529 INFO L226 Difference]: Without dead ends: 3699 [2018-11-12 16:32:01,541 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 875 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=456, Invalid=1436, Unknown=0, NotChecked=0, Total=1892 [2018-11-12 16:32:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2018-11-12 16:32:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3454. [2018-11-12 16:32:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3454 states. [2018-11-12 16:32:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 4380 transitions. [2018-11-12 16:32:01,650 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 4380 transitions. Word has length 432 [2018-11-12 16:32:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:01,651 INFO L480 AbstractCegarLoop]: Abstraction has 3454 states and 4380 transitions. [2018-11-12 16:32:01,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:32:01,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 4380 transitions. [2018-11-12 16:32:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-11-12 16:32:01,665 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:01,666 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:32:01,666 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:01,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:01,667 INFO L82 PathProgramCache]: Analyzing trace with hash 700870408, now seen corresponding path program 1 times [2018-11-12 16:32:01,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:01,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:01,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:01,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:01,668 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 260 proven. 105 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-11-12 16:32:02,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:02,589 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:02,590 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 455 with the following transitions: [2018-11-12 16:32:02,590 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:02,594 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:02,594 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:02,672 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:02,877 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:32:02,877 INFO L272 AbstractInterpreter]: Visited 123 different actions 369 times. Merged at 7 different actions 22 times. Never widened. Performed 3602 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3602 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 16:32:02,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:02,883 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:32:03,430 INFO L227 lantSequenceWeakener]: Weakened 451 states. On average, predicates are now at 79.83% of their original sizes. [2018-11-12 16:32:03,431 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:32:03,541 INFO L415 sIntCurrentIteration]: We unified 453 AI predicates to 453 [2018-11-12 16:32:03,542 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:32:03,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:32:03,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-12 16:32:03,542 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:32:03,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:32:03,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:32:03,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:32:03,544 INFO L87 Difference]: Start difference. First operand 3454 states and 4380 transitions. Second operand 11 states. [2018-11-12 16:32:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:10,687 INFO L93 Difference]: Finished difference Result 7303 states and 9486 transitions. [2018-11-12 16:32:10,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 16:32:10,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 454 [2018-11-12 16:32:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:10,703 INFO L225 Difference]: With dead ends: 7303 [2018-11-12 16:32:10,703 INFO L226 Difference]: Without dead ends: 4223 [2018-11-12 16:32:10,714 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 464 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:32:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2018-11-12 16:32:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 4204. [2018-11-12 16:32:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4204 states. [2018-11-12 16:32:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 5258 transitions. [2018-11-12 16:32:10,811 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 5258 transitions. Word has length 454 [2018-11-12 16:32:10,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:10,812 INFO L480 AbstractCegarLoop]: Abstraction has 4204 states and 5258 transitions. [2018-11-12 16:32:10,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:32:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 5258 transitions. [2018-11-12 16:32:10,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2018-11-12 16:32:10,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:10,832 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 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, 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, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:32:10,832 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:10,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:10,833 INFO L82 PathProgramCache]: Analyzing trace with hash 283713559, now seen corresponding path program 1 times [2018-11-12 16:32:10,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:10,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:10,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:10,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:10,834 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:11,378 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 16:32:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 366 proven. 471 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-11-12 16:32:12,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:12,449 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:12,450 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 540 with the following transitions: [2018-11-12 16:32:12,450 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:12,452 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:12,452 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:12,545 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:12,878 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:12,878 INFO L272 AbstractInterpreter]: Visited 125 different actions 497 times. Merged at 8 different actions 32 times. Never widened. Performed 5841 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5841 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:32:12,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:12,889 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:12,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:12,889 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 16:32:12,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:12,899 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:13,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 740 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-11-12 16:32:13,389 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 360 proven. 105 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-11-12 16:32:13,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:13,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 14 [2018-11-12 16:32:13,985 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:13,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 16:32:13,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 16:32:13,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:32:13,987 INFO L87 Difference]: Start difference. First operand 4204 states and 5258 transitions. Second operand 13 states. [2018-11-12 16:32:14,540 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2018-11-12 16:32:15,465 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2018-11-12 16:32:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:17,590 INFO L93 Difference]: Finished difference Result 8371 states and 10792 transitions. [2018-11-12 16:32:17,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 16:32:17,591 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 539 [2018-11-12 16:32:17,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:17,615 INFO L225 Difference]: With dead ends: 8371 [2018-11-12 16:32:17,616 INFO L226 Difference]: Without dead ends: 4307 [2018-11-12 16:32:17,634 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1084 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:32:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2018-11-12 16:32:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 4076. [2018-11-12 16:32:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4076 states. [2018-11-12 16:32:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 4906 transitions. [2018-11-12 16:32:17,740 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 4906 transitions. Word has length 539 [2018-11-12 16:32:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:17,740 INFO L480 AbstractCegarLoop]: Abstraction has 4076 states and 4906 transitions. [2018-11-12 16:32:17,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 16:32:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 4906 transitions. [2018-11-12 16:32:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2018-11-12 16:32:17,751 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:17,751 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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] [2018-11-12 16:32:17,752 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:17,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:17,752 INFO L82 PathProgramCache]: Analyzing trace with hash 829972343, now seen corresponding path program 1 times [2018-11-12 16:32:17,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:17,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:17,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:17,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:17,754 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 392 proven. 520 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-11-12 16:32:18,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:18,939 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:18,940 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 588 with the following transitions: [2018-11-12 16:32:18,940 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [746], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:18,942 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:18,942 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:19,016 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:19,478 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:19,478 INFO L272 AbstractInterpreter]: Visited 145 different actions 571 times. Merged at 8 different actions 27 times. Never widened. Performed 6395 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6395 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:32:19,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:19,482 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:19,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:19,482 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:19,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:19,491 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:19,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 789 proven. 2 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-11-12 16:32:20,050 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 388 proven. 105 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2018-11-12 16:32:20,937 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:20,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-12 16:32:20,937 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:20,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:32:20,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:32:20,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:32:20,939 INFO L87 Difference]: Start difference. First operand 4076 states and 4906 transitions. Second operand 17 states. [2018-11-12 16:32:23,744 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2018-11-12 16:32:25,250 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2018-11-12 16:32:26,388 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-11-12 16:32:28,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:28,932 INFO L93 Difference]: Finished difference Result 8416 states and 10592 transitions. [2018-11-12 16:32:28,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-12 16:32:28,933 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 587 [2018-11-12 16:32:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:28,949 INFO L225 Difference]: With dead ends: 8416 [2018-11-12 16:32:28,950 INFO L226 Difference]: Without dead ends: 4096 [2018-11-12 16:32:28,966 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1192 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=824, Invalid=3082, Unknown=0, NotChecked=0, Total=3906 [2018-11-12 16:32:28,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2018-11-12 16:32:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 3932. [2018-11-12 16:32:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3932 states. [2018-11-12 16:32:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 4521 transitions. [2018-11-12 16:32:29,051 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 4521 transitions. Word has length 587 [2018-11-12 16:32:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:29,052 INFO L480 AbstractCegarLoop]: Abstraction has 3932 states and 4521 transitions. [2018-11-12 16:32:29,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:32:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 4521 transitions. [2018-11-12 16:32:29,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2018-11-12 16:32:29,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:29,061 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2018-11-12 16:32:29,061 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:29,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:29,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1134556827, now seen corresponding path program 1 times [2018-11-12 16:32:29,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:29,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:29,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:29,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:29,063 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 393 proven. 105 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2018-11-12 16:32:29,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:29,660 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:29,660 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 640 with the following transitions: [2018-11-12 16:32:29,660 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:29,663 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:29,663 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:29,831 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:30,820 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:30,821 INFO L272 AbstractInterpreter]: Visited 192 different actions 1156 times. Merged at 10 different actions 64 times. Widened at 1 different actions 3 times. Performed 13859 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13859 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 16 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:32:30,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:30,825 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:30,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:30,825 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:30,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:30,834 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:30,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 794 proven. 2 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-11-12 16:32:31,462 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 393 proven. 105 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2018-11-12 16:32:32,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:32,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-12 16:32:32,265 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:32,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:32:32,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:32:32,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:32:32,267 INFO L87 Difference]: Start difference. First operand 3932 states and 4521 transitions. Second operand 7 states. [2018-11-12 16:32:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:34,610 INFO L93 Difference]: Finished difference Result 12627 states and 16764 transitions. [2018-11-12 16:32:34,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:32:34,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 639 [2018-11-12 16:32:34,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:34,666 INFO L225 Difference]: With dead ends: 12627 [2018-11-12 16:32:34,666 INFO L226 Difference]: Without dead ends: 9069 [2018-11-12 16:32:34,696 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1294 GetRequests, 1281 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:32:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9069 states. [2018-11-12 16:32:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9069 to 8670. [2018-11-12 16:32:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8670 states. [2018-11-12 16:32:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 10107 transitions. [2018-11-12 16:32:34,980 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 10107 transitions. Word has length 639 [2018-11-12 16:32:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:34,981 INFO L480 AbstractCegarLoop]: Abstraction has 8670 states and 10107 transitions. [2018-11-12 16:32:34,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:32:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 10107 transitions. [2018-11-12 16:32:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2018-11-12 16:32:34,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:34,998 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 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] [2018-11-12 16:32:34,999 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:34,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:34,999 INFO L82 PathProgramCache]: Analyzing trace with hash -2079206197, now seen corresponding path program 1 times [2018-11-12 16:32:34,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:35,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:35,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:35,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:35,002 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 582 proven. 2 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2018-11-12 16:32:35,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:35,939 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:35,939 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 800 with the following transitions: [2018-11-12 16:32:35,939 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:35,943 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:35,943 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:36,127 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:37,093 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:37,093 INFO L272 AbstractInterpreter]: Visited 193 different actions 1178 times. Merged at 11 different actions 80 times. Widened at 1 different actions 4 times. Performed 14433 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14433 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 20 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:32:37,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:37,101 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:37,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:37,101 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:37,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:37,111 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:37,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 1070 proven. 2 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2018-11-12 16:32:37,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 568 proven. 105 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2018-11-12 16:32:38,638 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:38,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-12 16:32:38,638 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:38,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:32:38,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:32:38,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-12 16:32:38,640 INFO L87 Difference]: Start difference. First operand 8670 states and 10107 transitions. Second operand 10 states. [2018-11-12 16:32:41,778 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-11-12 16:32:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:44,989 INFO L93 Difference]: Finished difference Result 22815 states and 28665 transitions. [2018-11-12 16:32:44,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-12 16:32:44,990 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 799 [2018-11-12 16:32:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:45,055 INFO L225 Difference]: With dead ends: 22815 [2018-11-12 16:32:45,055 INFO L226 Difference]: Without dead ends: 14336 [2018-11-12 16:32:45,113 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1666 GetRequests, 1623 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=371, Invalid=1435, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 16:32:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14336 states. [2018-11-12 16:32:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14336 to 14134. [2018-11-12 16:32:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14134 states. [2018-11-12 16:32:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14134 states to 14134 states and 16223 transitions. [2018-11-12 16:32:45,417 INFO L78 Accepts]: Start accepts. Automaton has 14134 states and 16223 transitions. Word has length 799 [2018-11-12 16:32:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:45,419 INFO L480 AbstractCegarLoop]: Abstraction has 14134 states and 16223 transitions. [2018-11-12 16:32:45,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:32:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 14134 states and 16223 transitions. [2018-11-12 16:32:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2018-11-12 16:32:45,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:45,445 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:32:45,445 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:45,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2131718692, now seen corresponding path program 1 times [2018-11-12 16:32:45,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:45,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:45,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:45,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:45,447 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2389 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 2322 trivial. 0 not checked. [2018-11-12 16:32:46,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:32:46,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:32:46,201 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:32:46,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:32:46,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:32:46,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:32:46,203 INFO L87 Difference]: Start difference. First operand 14134 states and 16223 transitions. Second operand 3 states. [2018-11-12 16:32:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:47,133 INFO L93 Difference]: Finished difference Result 29026 states and 33663 transitions. [2018-11-12 16:32:47,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:32:47,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 964 [2018-11-12 16:32:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:47,182 INFO L225 Difference]: With dead ends: 29026 [2018-11-12 16:32:47,183 INFO L226 Difference]: Without dead ends: 15083 [2018-11-12 16:32:47,223 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 16:32:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15083 states. [2018-11-12 16:32:47,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15083 to 14917. [2018-11-12 16:32:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14917 states. [2018-11-12 16:32:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14917 states to 14917 states and 16609 transitions. [2018-11-12 16:32:47,481 INFO L78 Accepts]: Start accepts. Automaton has 14917 states and 16609 transitions. Word has length 964 [2018-11-12 16:32:47,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:47,482 INFO L480 AbstractCegarLoop]: Abstraction has 14917 states and 16609 transitions. [2018-11-12 16:32:47,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:32:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 14917 states and 16609 transitions. [2018-11-12 16:32:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2018-11-12 16:32:47,505 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:47,506 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:32:47,506 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:47,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:47,507 INFO L82 PathProgramCache]: Analyzing trace with hash -521082600, now seen corresponding path program 1 times [2018-11-12 16:32:47,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:47,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:47,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:47,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:47,508 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 458 proven. 1363 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2018-11-12 16:32:50,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:50,325 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:50,325 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 975 with the following transitions: [2018-11-12 16:32:50,325 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:50,328 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:50,329 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:50,483 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:51,316 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:51,316 INFO L272 AbstractInterpreter]: Visited 195 different actions 1184 times. Merged at 12 different actions 74 times. Widened at 1 different actions 3 times. Performed 13674 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13674 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 26 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-12 16:32:51,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:51,323 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:51,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:51,323 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:51,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:51,333 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:51,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 1936 proven. 2 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2018-11-12 16:32:52,309 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 459 proven. 431 refuted. 0 times theorem prover too weak. 1902 trivial. 0 not checked. [2018-11-12 16:32:53,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:53,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-12 16:32:53,450 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:53,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:32:53,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:32:53,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:32:53,452 INFO L87 Difference]: Start difference. First operand 14917 states and 16609 transitions. Second operand 18 states. [2018-11-12 16:32:55,950 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 19 [2018-11-12 16:32:57,385 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2018-11-12 16:33:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:33:03,465 INFO L93 Difference]: Finished difference Result 30158 states and 33709 transitions. [2018-11-12 16:33:03,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-12 16:33:03,466 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 974 [2018-11-12 16:33:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:33:03,516 INFO L225 Difference]: With dead ends: 30158 [2018-11-12 16:33:03,516 INFO L226 Difference]: Without dead ends: 15432 [2018-11-12 16:33:03,554 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2037 GetRequests, 1974 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=850, Invalid=3310, Unknown=0, NotChecked=0, Total=4160 [2018-11-12 16:33:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15432 states. [2018-11-12 16:33:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15432 to 14891. [2018-11-12 16:33:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14891 states. [2018-11-12 16:33:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14891 states to 14891 states and 16247 transitions. [2018-11-12 16:33:03,813 INFO L78 Accepts]: Start accepts. Automaton has 14891 states and 16247 transitions. Word has length 974 [2018-11-12 16:33:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:33:03,814 INFO L480 AbstractCegarLoop]: Abstraction has 14891 states and 16247 transitions. [2018-11-12 16:33:03,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:33:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 14891 states and 16247 transitions. [2018-11-12 16:33:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2018-11-12 16:33:03,838 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:33:03,839 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:33:03,839 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:33:03,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:03,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1844818617, now seen corresponding path program 1 times [2018-11-12 16:33:03,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:33:03,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:03,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:03,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:03,841 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:33:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 1135 proven. 184 refuted. 0 times theorem prover too weak. 1563 trivial. 0 not checked. [2018-11-12 16:33:05,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:05,023 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:33:05,023 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1020 with the following transitions: [2018-11-12 16:33:05,024 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:33:05,026 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:33:05,027 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:33:05,199 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:33:06,016 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:33:06,017 INFO L272 AbstractInterpreter]: Visited 195 different actions 987 times. Merged at 13 different actions 60 times. Never widened. Performed 12375 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12375 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 21 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-12 16:33:06,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:06,032 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:33:06,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:06,032 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:06,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:06,042 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:33:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:06,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:33:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 1784 proven. 6 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2018-11-12 16:33:07,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:33:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 1135 proven. 257 refuted. 0 times theorem prover too weak. 1490 trivial. 0 not checked. [2018-11-12 16:33:08,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:33:08,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2018-11-12 16:33:08,121 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:33:08,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:33:08,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:33:08,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-12 16:33:08,123 INFO L87 Difference]: Start difference. First operand 14891 states and 16247 transitions. Second operand 9 states. [2018-11-12 16:33:11,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:33:11,591 INFO L93 Difference]: Finished difference Result 34494 states and 37800 transitions. [2018-11-12 16:33:11,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 16:33:11,594 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1019 [2018-11-12 16:33:11,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:33:11,645 INFO L225 Difference]: With dead ends: 34494 [2018-11-12 16:33:11,646 INFO L226 Difference]: Without dead ends: 19794 [2018-11-12 16:33:11,675 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2055 GetRequests, 2036 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:33:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19794 states. [2018-11-12 16:33:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19794 to 19235. [2018-11-12 16:33:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19235 states. [2018-11-12 16:33:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19235 states to 19235 states and 20999 transitions. [2018-11-12 16:33:12,010 INFO L78 Accepts]: Start accepts. Automaton has 19235 states and 20999 transitions. Word has length 1019 [2018-11-12 16:33:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:33:12,012 INFO L480 AbstractCegarLoop]: Abstraction has 19235 states and 20999 transitions. [2018-11-12 16:33:12,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:33:12,012 INFO L276 IsEmpty]: Start isEmpty. Operand 19235 states and 20999 transitions. [2018-11-12 16:33:12,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172 [2018-11-12 16:33:12,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:33:12,040 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 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, 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] [2018-11-12 16:33:12,040 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:33:12,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:12,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1943301251, now seen corresponding path program 1 times [2018-11-12 16:33:12,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:33:12,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:12,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:12,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:12,042 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:33:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:13,002 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 16:33:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3949 backedges. 855 proven. 849 refuted. 0 times theorem prover too weak. 2245 trivial. 0 not checked. [2018-11-12 16:33:14,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:14,663 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:33:14,663 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1172 with the following transitions: [2018-11-12 16:33:14,663 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:33:14,666 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:33:14,667 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:33:14,716 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:33:15,786 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:33:15,786 INFO L272 AbstractInterpreter]: Visited 196 different actions 993 times. Merged at 14 different actions 61 times. Never widened. Performed 12009 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12009 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 23 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-12 16:33:15,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:15,824 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:33:15,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:15,824 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:15,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:15,837 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:33:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:16,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:33:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3949 backedges. 1640 proven. 2 refuted. 0 times theorem prover too weak. 2307 trivial. 0 not checked. [2018-11-12 16:33:17,461 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:33:17,683 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-11-12 16:33:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3949 backedges. 864 proven. 105 refuted. 0 times theorem prover too weak. 2980 trivial. 0 not checked. [2018-11-12 16:33:19,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:33:19,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-12 16:33:19,324 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:33:19,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:33:19,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:33:19,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:33:19,326 INFO L87 Difference]: Start difference. First operand 19235 states and 20999 transitions. Second operand 17 states. [2018-11-12 16:33:26,274 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-11-12 16:33:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:33:26,917 INFO L93 Difference]: Finished difference Result 41253 states and 45370 transitions. [2018-11-12 16:33:26,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-12 16:33:26,917 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1171 [2018-11-12 16:33:26,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:33:26,966 INFO L225 Difference]: With dead ends: 41253 [2018-11-12 16:33:26,966 INFO L226 Difference]: Without dead ends: 22209 [2018-11-12 16:33:27,001 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2417 GetRequests, 2364 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2018-11-12 16:33:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22209 states. [2018-11-12 16:33:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22209 to 21622. [2018-11-12 16:33:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21622 states. [2018-11-12 16:33:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21622 states to 21622 states and 23472 transitions. [2018-11-12 16:33:27,339 INFO L78 Accepts]: Start accepts. Automaton has 21622 states and 23472 transitions. Word has length 1171 [2018-11-12 16:33:27,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:33:27,340 INFO L480 AbstractCegarLoop]: Abstraction has 21622 states and 23472 transitions. [2018-11-12 16:33:27,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:33:27,340 INFO L276 IsEmpty]: Start isEmpty. Operand 21622 states and 23472 transitions. [2018-11-12 16:33:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2018-11-12 16:33:27,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:33:27,371 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 16:33:27,371 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:33:27,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:27,372 INFO L82 PathProgramCache]: Analyzing trace with hash -941815913, now seen corresponding path program 1 times [2018-11-12 16:33:27,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:33:27,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:27,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:27,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:27,373 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:33:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:28,925 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 16:33:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 1111 proven. 1073 refuted. 0 times theorem prover too weak. 4136 trivial. 0 not checked. [2018-11-12 16:33:31,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:31,366 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:33:31,366 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1496 with the following transitions: [2018-11-12 16:33:31,366 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:33:31,368 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:33:31,368 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:33:31,418 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:33:32,317 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:33:32,318 INFO L272 AbstractInterpreter]: Visited 201 different actions 1017 times. Merged at 14 different actions 60 times. Never widened. Performed 12755 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12755 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 27 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-12 16:33:32,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:32,331 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:33:32,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:32,331 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:32,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:32,341 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:33:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:32,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:33:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 2098 proven. 2 refuted. 0 times theorem prover too weak. 4220 trivial. 0 not checked. [2018-11-12 16:33:34,159 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:33:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 1120 proven. 105 refuted. 0 times theorem prover too weak. 5095 trivial. 0 not checked. [2018-11-12 16:33:36,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:33:36,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-12 16:33:36,102 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:33:36,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:33:36,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:33:36,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:33:36,104 INFO L87 Difference]: Start difference. First operand 21622 states and 23472 transitions. Second operand 17 states. [2018-11-12 16:33:41,913 WARN L179 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-11-12 16:33:43,971 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-11-12 16:33:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:33:44,177 INFO L93 Difference]: Finished difference Result 43595 states and 47372 transitions. [2018-11-12 16:33:44,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-12 16:33:44,178 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1495 [2018-11-12 16:33:44,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:33:44,217 INFO L225 Difference]: With dead ends: 43595 [2018-11-12 16:33:44,218 INFO L226 Difference]: Without dead ends: 22164 [2018-11-12 16:33:44,247 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3067 GetRequests, 3013 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=563, Invalid=2407, Unknown=0, NotChecked=0, Total=2970 [2018-11-12 16:33:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22164 states. [2018-11-12 16:33:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22164 to 21624. [2018-11-12 16:33:44,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21624 states. [2018-11-12 16:33:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21624 states to 21624 states and 23342 transitions. [2018-11-12 16:33:44,566 INFO L78 Accepts]: Start accepts. Automaton has 21624 states and 23342 transitions. Word has length 1495 [2018-11-12 16:33:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:33:44,567 INFO L480 AbstractCegarLoop]: Abstraction has 21624 states and 23342 transitions. [2018-11-12 16:33:44,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:33:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 21624 states and 23342 transitions. [2018-11-12 16:33:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1639 [2018-11-12 16:33:44,598 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:33:44,599 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:33:44,599 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:33:44,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash 124446816, now seen corresponding path program 1 times [2018-11-12 16:33:44,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:33:44,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:44,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:44,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:44,601 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:33:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:45,420 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-12 16:33:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 117 proven. 231 refuted. 0 times theorem prover too weak. 7376 trivial. 0 not checked. [2018-11-12 16:33:46,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:46,500 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:33:46,500 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1639 with the following transitions: [2018-11-12 16:33:46,501 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [670], [671], [675], [679], [683], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:33:46,504 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:33:46,504 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:33:46,742 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:33:47,913 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:33:47,914 INFO L272 AbstractInterpreter]: Visited 202 different actions 1238 times. Merged at 14 different actions 85 times. Widened at 1 different actions 2 times. Performed 14992 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14992 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 40 fixpoints after 8 different actions. Largest state had 24 variables. [2018-11-12 16:33:47,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:47,922 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:33:47,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:47,922 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:47,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:47,931 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:33:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:48,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:33:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 7607 trivial. 0 not checked. [2018-11-12 16:33:50,636 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:33:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 7607 trivial. 0 not checked. [2018-11-12 16:33:51,768 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:33:51,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-11-12 16:33:51,769 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:33:51,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:33:51,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:33:51,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:33:51,771 INFO L87 Difference]: Start difference. First operand 21624 states and 23342 transitions. Second operand 3 states. [2018-11-12 16:33:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:33:52,607 INFO L93 Difference]: Finished difference Result 43057 states and 46568 transitions. [2018-11-12 16:33:52,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:33:52,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1638 [2018-11-12 16:33:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:33:52,642 INFO L225 Difference]: With dead ends: 43057 [2018-11-12 16:33:52,642 INFO L226 Difference]: Without dead ends: 21624 [2018-11-12 16:33:52,675 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3283 GetRequests, 3276 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:33:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21624 states. [2018-11-12 16:33:52,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21624 to 21606. [2018-11-12 16:33:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21606 states. [2018-11-12 16:33:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21606 states to 21606 states and 23063 transitions. [2018-11-12 16:33:52,953 INFO L78 Accepts]: Start accepts. Automaton has 21606 states and 23063 transitions. Word has length 1638 [2018-11-12 16:33:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:33:52,954 INFO L480 AbstractCegarLoop]: Abstraction has 21606 states and 23063 transitions. [2018-11-12 16:33:52,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:33:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 21606 states and 23063 transitions. [2018-11-12 16:33:52,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1650 [2018-11-12 16:33:52,985 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:33:52,985 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:33:52,985 INFO L423 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:33:52,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:52,986 INFO L82 PathProgramCache]: Analyzing trace with hash -848563461, now seen corresponding path program 1 times [2018-11-12 16:33:52,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:33:52,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:52,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:52,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:52,987 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:33:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-12 16:33:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7720 backedges. 1268 proven. 1918 refuted. 0 times theorem prover too weak. 4534 trivial. 0 not checked. [2018-11-12 16:33:57,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:57,088 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:33:57,088 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1650 with the following transitions: [2018-11-12 16:33:57,088 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [830], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:33:57,091 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:33:57,091 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:33:57,092 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 16:33:57,092 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 16:33:57,093 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:33:57,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:57,093 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:57,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:57,102 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:33:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:57,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:33:57,527 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 16:33:57,729 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:57,729 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:33:57,734 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:33:57,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:33:57 BoogieIcfgContainer [2018-11-12 16:33:57,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:33:57,736 INFO L168 Benchmark]: Toolchain (without parser) took 217388.53 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -612.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 16:33:57,738 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:33:57,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 860.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:33:57,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 157.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:33:57,740 INFO L168 Benchmark]: Boogie Preprocessor took 117.59 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:33:57,740 INFO L168 Benchmark]: RCFGBuilder took 3554.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.0 MB). Peak memory consumption was 132.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:33:57,743 INFO L168 Benchmark]: TraceAbstraction took 212693.34 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 36.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 16:33:57,752 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 860.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 157.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.59 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3554.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.0 MB). Peak memory consumption was 132.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212693.34 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 36.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 25). Cancelled while BasicCegarLoop was analyzing trace of length 1650 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 212.6s OverallTime, 20 OverallIterations, 13 TraceHistogramMax, 138.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3345 SDtfs, 44188 SDslu, 5152 SDs, 0 SdLazy, 54185 SolverSat, 6254 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.8s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 20516 GetRequests, 20017 SyntacticMatches, 18 SemanticMatches, 481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5646 ImplicationChecksByTransitivity, 25.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21624occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.8s AbstIntTime, 15 AbstIntIterations, 4 AbstIntStrong, 0.9971004196209857 AbsIntWeakeningRatio, 0.09516728624535316 AbsIntAvgWeakeningVarsNumRemoved, 17.961338289962825 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 3877 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 33.9s InterpolantComputationTime, 21338 NumberOfCodeBlocks, 21338 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 30592 ConstructedInterpolants, 0 QuantifiedInterpolants, 93745088 SizeOfPredicates, 28 NumberOfNonLiveVariables, 13138 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 39 InterpolantComputations, 7 PerfectInterpolantSequences, 83932/91842 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown